Din 3760 Pdf May 2026
If you are working with rotating machinery, you’ve likely encountered the DIN 3760 standard. Whether you’re designing a new gearbox or maintaining a hydraulic pump, understanding the technical specifications of these rotary shaft lip seals (often called oil seals) is critical for preventing leaks and extending machine life.
In this guide, we’ll break down what makes a DIN 3760 seal unique and how to find the official documentation you need. What is the DIN 3760 Standard?
DIN 3760 is a German standard that specifies the dimensions, materials, and requirements for rotary shaft lip seals. These seals are primarily used to retain fluids like oil or grease in unpressurized equipment (or equipment with very low differential pressure). Key Components of the Seal:
Elastomer Outer Sleeve: Provides static sealing against the housing.
Metal Insert: A reinforcing ring that gives the seal structural stability.
Garter Spring: A tension spring that ensures the sealing lip maintains constant pressure against the rotating shaft. Common Design Types
While there are several variations, the two most frequent types defined in the standard are:
Type A: A standard smooth outer diameter version for basic fluid retention.
Type AS: Includes an additional dust lip (also known as a protective lip) to prevent external dirt and contaminants from reaching the main sealing element. Technical Specifications at a Glance
To ensure your seal performs correctly, you must adhere to the operating limits defined by the standard: Rotary shaft lip seals DIN 3760 | norelem
The DIN 3760 standard is a cornerstone of mechanical engineering, providing the technical blueprint for rotary shaft lip seals—the unsung heroes of machinery that keep lubricants in and contaminants out. If you are looking for a DIN 3760 PDF, you are likely engaging with a standard that governs the reliability of everything from industrial gearboxes to common household appliances. The Blueprint of Modern Sealing
At its core, DIN 3760 defines the dimensions, materials, and installation requirements for radial shaft seals. These seals, often called Simmerrings, typically consist of an elastomeric outer sleeve, a metal reinforcement plate, and a "garter" spring that maintains constant pressure against the rotating shaft.
The standard categorizes seals into three primary construction forms:
Form A: A rubber-covered outer diameter, providing excellent static sealing even in housings with high thermal expansion or surface roughness.
Form B: An exposed metal outer case, offering a tighter press-fit for applications where high axial ejection forces might occur.
Form C: A metal outer case with a reinforcing cap, designed for the most demanding or "rough" installation environments. Precision in the Details
The "essay" of a DIN 3760 PDF isn't just about the seal itself; it’s a manual for the entire mechanical interface. It specifies critical tolerances for the housing bore (typically H8) and the shaft (typically h11). DIN 3760 - Rotary shaft lip seals - Standards | GlobalSpec
Feature: DIN 3760 Radial Shaft Seal
Description: The DIN 3760 standard specifies the design, dimensions, and testing requirements for radial shaft seals used in rotating machinery. The standard covers seals with a elastomeric seal ring and a metal casing.
Key Features:
- Design: The seal consists of a elastomeric seal ring and a metal casing. The seal ring is designed to provide a tight seal around the shaft, while the metal casing provides structural support and helps to retain the seal ring in place.
- Dimensions: The standard specifies the dimensions of the seal, including the inner diameter (d), outer diameter (D), and width (B).
- Materials: The standard specifies the materials that can be used for the seal ring and metal casing, including rubber, polyurethane, and steel.
- Testing: The standard requires that seals be tested for leakage, radial force, and durability.
Benefits:
- Improved sealing performance: The DIN 3760 standard ensures that radial shaft seals provide a reliable and efficient seal, reducing the risk of fluid leakage and minimizing maintenance costs.
- Increased safety: The standard helps to prevent accidents caused by fluid leakage, which can lead to equipment damage, injuries, and environmental hazards.
- Interchangeability: The standard promotes interchangeability of radial shaft seals between different manufacturers and applications.
Applications:
- Rotating machinery: DIN 3760 radial shaft seals are used in a wide range of rotating machinery, including pumps, gearboxes, and motors.
- Industrial applications: The seals are used in various industrial applications, including automotive, aerospace, and process industries.
PDF Resources:
If you are looking for a PDF version of the DIN 3760 standard, you can try the following resources:
- DIN website: You can purchase a PDF copy of the standard from the official DIN website.
- Technical libraries: Many technical libraries and databases, such as IHS Standards Store or ANSI Webstore, offer PDF copies of the standard for download or purchase.
- Online marketplaces: You can also search for PDF copies of the standard on online marketplaces like Amazon or Google Books.
standard specifies dimensions and requirements for rotary shaft lip seals used to retain fluids or grease in unpressurized or low-differential pressure equipment. This report outlines the core technical specifications, design types, and installation requirements defined by the standard. 1. Standard Overview and Scope DIN 3760 is the German standard for Rotary Shaft Lip Seals
, often colloquially known as "Oil Seals." It provides a framework for manufacturers and engineers to ensure compatibility between shafts and seals in rotating applications. Primary Function
: To prevent the leakage of lubricants (oil/grease) and protect against the ingress of dust and dirt. Operating Conditions
: Typically used in unpressurized or low-pressure environments (up to approx. 0.5 bar). 2. Core Design Types
The standard defines specific geometries for the outer diameter and lip configuration: Ecoseal Co.,Ltd. Description Rubber-covered outer diameter, smooth profile.
High safety for static sealing; housings with high thermal expansion. Rubber-covered outer diameter with an additional
Applications with moderate external contamination (dust/dirt). Metal outer diameter (exposed metal case). Improved fit in precision-machined housing bores. Metal outer diameter with an additional dust lip. High precision requirements with light external dirt. 3. Technical Requirements for Shafts
The effectiveness of a DIN 3760 seal depends heavily on the surface finish of the shaft it interacts with. | เวอร์ทัส Surface Hardness : A minimum of
is required. For speeds above 4 m/s or contaminated media, this should increase to 55–60 HRC Surface Finish : The standard specifies a roughness of Ra 0.2 to 0.8 µm Rz 1 to 5 µm Hardness Depth : Recommended penetration of at least
: Spiral grinding or marks must be avoided to prevent a "pumping effect" that causes leakage. | เวอร์ทัส 4. Material Specifications
Standard seals are typically manufactured from two primary elastomer types depending on temperature and chemical resistance: Tameson.com NBR (Nitrile Rubber)
: Standard material; resistant to petroleum-based fluids. Operational from -30°C to +100°C FKM (Fluorocarbon / Viton)
: High-performance material; resistant to aggressive media and higher temperatures from -20°C to +200°C Tameson.com Rotary Seals - Ecoseal Co.,Ltd.
Standard types of rotary seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ecoseal Co.,Ltd.
Retentor Din 3760 | PDF | Engineering Tolerance | Lubricant - Scribd
is a technical standard from the German Institute for Standardization (Deutsches Institut für Normung) that outlines the requirements for rotary shaft lip seals (commonly known as oil seals). Overview of the Document
If you are looking for a "review" of the standard itself, it is considered the global benchmark for seal design in unpressurized or low-pressure equipment. According to GlobalSpec , the document covers: Dimensions:
Precise measurements for various shaft diameters and housing bores. Materials:
Requirements for elastomers (like NBR or FKM) and metal cases. Installation: din 3760 pdf
Specific guidelines on how to fit seals to ensure they retain fluids or grease effectively.
Standardized coding to help identify seal types and sizes quickly. Key Insights for Users Application:
It is the "go-to" guide for engineers designing gearboxes, motors, or any machinery with rotating shafts. Design Variants: You will find specifications for different types, such as (rubber covered), (with a dust lip), and (metal outer shell). Compliance:
Using parts that adhere to DIN 3760 ensures interchangeability across different manufacturers worldwide. Where to Find the PDF
Official, copyrighted PDF copies are typically sold through standards organizations rather than offered for free. You can find the full document on: Beuth Verlag (The official distributor for DIN). Standard aggregators like IHS Markit/S&P Global or advice on selecting a seal material for a specific project?
DIN 3760 PDF: Standard for Radial Shaft Seals
Introduction
DIN 3760 is a German standard that specifies the requirements for radial shaft seals, also known as radial lip seals, used to seal rotating shafts in various applications. The standard is published by the German Institute for Standardization (DIN) and is widely used in Europe and other parts of the world. Here, we provide an overview of the DIN 3760 standard and make available a downloadable PDF version.
Scope and Application
The DIN 3760 standard covers radial shaft seals with a single lip or multiple lips, used for sealing rotating shafts in various applications, including:
- Industrial machinery
- Automotive
- Aerospace
- Agricultural machinery
The standard specifies the design, dimensions, materials, and testing requirements for radial shaft seals to ensure reliable sealing performance and long-term durability.
Key Features of DIN 3760
The DIN 3760 standard covers the following key features:
- Seal design and construction
- Materials and surface finish
- Dimensions and tolerances
- Performance testing (e.g., leakage, friction, and wear)
- Quality control and inspection
Benefits of DIN 3760 Compliance
Complying with the DIN 3760 standard offers several benefits, including:
- Improved sealing performance and reliability
- Increased equipment uptime and reduced maintenance costs
- Enhanced safety and reduced risk of environmental contamination
- Increased compatibility and interchangeability of radial shaft seals
Download DIN 3760 PDF
You can download a copy of the DIN 3760 standard in PDF format from the following sources:
DIN 3760 PDF Content
The content of the DIN 3760 PDF includes:
- Foreword and introduction
- Scope and application
- Normative references
- Terms and definitions
- Seal design and construction
- Materials and surface finish
- Dimensions and tolerances
- Performance testing
- Quality control and inspection
- Marking and packaging
Conclusion
The DIN 3760 standard provides a comprehensive framework for the design, manufacture, and testing of radial shaft seals. By complying with this standard, manufacturers and users can ensure reliable sealing performance, improved equipment uptime, and reduced maintenance costs. Download the DIN 3760 PDF from authorized sources to access the full content of the standard.
DIN 3760 is the German standard for radial rotary shaft seals. It defines the dimensions, materials, and technical specifications for lip seals used to prevent lubricant leakage and protect against dirt in machinery. 📘 Standard Summary
The standard categorizes seals into basic types based on their construction and the presence of a dust lip: Type A: Standard rubber-covered outer diameter.
Type AS: Type A with an additional dust lip for external protection. Type B: Metal outer case (exposed metal).
Type C: Metal outer case with an additional reinforcing cap. ⚙️ Technical Requirements
For a seal to function per DIN 3760, the shaft and housing must meet specific tolerances:
Shaft Hardness: Minimum 45 HRC (increases to 55 HRC for speeds > 4 m/s). Shaft Tolerance: Recommended h11. Housing Tolerance: Recommended H8.
Surface Finish: Ra 0.2 to 0.8 µm for the shaft; Ra 1.6 to 6.3 µm for the housing. 📋 Designation Example
A typical order text for a seal according to this standard looks like this:Lip seal DIN 3760 – A 25 × 40 × 7 – NBR A: Type (Rubber-covered) 25: Shaft diameter ( 40: Outside diameter ( 7: Width ( NBR: Material (Nitrile Butadiene Rubber) 🔗 Official Sources & Downloads
While the full official text is copyrighted, you can find detailed technical summaries and purchase the official PDF here:
Purchase Full Standard: Available at the ANSI Webstore or Beuth Verlag.
Technical PDF Summaries: Manufacturers like Tameson and Elastotechnic provide free dimension tables and material data sheets based on the standard.
If you are looking for a specific dimension table or material compatibility chart, let me know and I can find those details for you!
Understanding DIN 3760: A Comprehensive Guide to Radial Lip Seals
In the world of mechanical engineering, seals play a crucial role in ensuring the smooth operation of rotating equipment, such as pumps, gearboxes, and bearings. One type of seal that has gained widespread acceptance is the radial lip seal, governed by the DIN 3760 standard. In this article, we will delve into the world of DIN 3760, exploring its significance, key features, and applications, as well as provide a comprehensive guide to radial lip seals.
What is DIN 3760?
DIN 3760 is a German standard that defines the requirements for radial lip seals, also known as radial shaft seals. The standard, titled "Radial shaft seals - Design, dimensions, testing" (in German: "Radial-Wellendichtringe - Konstruktion, Maße, Prüfung"), provides detailed specifications for the design, dimensions, materials, and testing of radial lip seals.
Importance of DIN 3760
Radial lip seals are critical components in many industrial applications, as they prevent fluid leakage and contamination, ensuring the reliability and longevity of equipment. The DIN 3760 standard ensures that these seals meet specific requirements for performance, safety, and quality, providing a benchmark for manufacturers and users alike.
Key Features of Radial Lip Seals
Radial lip seals, as defined by DIN 3760, have several key features:
- Design: Radial lip seals consist of a metal casing with a rubber or elastomeric sealing lip that contacts the rotating shaft.
- Dimensions: The standard defines various dimensions, such as the seal's inner diameter, outer diameter, width, and lip diameter.
- Materials: Radial lip seals can be made from various materials, including rubber, polyurethane, and silicone.
- Sealing principle: The sealing lip is designed to maintain a thin film of fluid between the lip and the shaft, creating a sealing effect.
Types of Radial Lip Seals
DIN 3760 defines several types of radial lip seals, including:
- A-type: A simple radial lip seal with a single lip.
- B-type: A radial lip seal with a single lip and a dust lip.
- C-type: A radial lip seal with two lips.
Applications of Radial Lip Seals
Radial lip seals are widely used in various industries, including:
- Automotive: Engine, gearbox, and wheel bearing applications.
- Industrial: Pumps, gearboxes, bearings, and hydraulic systems.
- Agricultural: Tractors, harvesters, and other agricultural equipment.
Benefits of Using DIN 3760-Compliant Radial Lip Seals
The use of DIN 3760-compliant radial lip seals offers several benefits, including:
- Improved reliability: Reduced risk of fluid leakage and contamination.
- Increased safety: Enhanced performance and reduced risk of equipment failure.
- Extended lifespan: Longer seal life and reduced maintenance costs.
How to Download DIN 3760 PDF
If you're interested in accessing the DIN 3760 standard, you can purchase and download a PDF copy from various sources, including:
- DIN website: The official DIN website (din.de) offers a digital version of the standard.
- Technical libraries: Many technical libraries and standards repositories provide access to DIN standards, including DIN 3760.
- Online marketplaces: Some online marketplaces, such as IHS Standards Store or ANSI Webstore, offer DIN standards for download.
Conclusion
In conclusion, DIN 3760 is a critical standard for radial lip seals, governing their design, dimensions, materials, and testing. By understanding the requirements of DIN 3760, manufacturers and users can ensure the reliable performance of rotating equipment, reducing the risk of fluid leakage and contamination. If you're looking for a comprehensive guide to radial lip seals, this article provides a valuable resource for anyone working with these critical components.
Additional Resources
For those interested in learning more about radial lip seals and DIN 3760, the following resources are available:
- DIN 3760 standard: Purchase and download a PDF copy of the standard.
- Technical articles: Various technical articles and papers on radial lip seals and their applications.
- Manufacturer websites: Many seal manufacturers provide detailed information on radial lip seals and their products.
By providing a comprehensive overview of DIN 3760 and radial lip seals, this article aims to serve as a valuable resource for engineers, designers, and users working with rotating equipment.
The DIN 3760 standard is a critical German industrial document that defines the dimensions and technical requirements for rotary shaft lip seals. These seals are primarily used to retain lubricants or grease in machinery with rotating shafts, such as motors, pumps, and gearboxes. Key Purpose of DIN 3760
The standard ensures that oil seals from different manufacturers are interchangeable and meet specific performance benchmarks. It covers:
Sealing Performance: Retaining fluid/grease in unpressurized or low-pressure equipment.
Contamination Prevention: Protecting internal components from external dust and dirt.
Standardization: Uniform sizing for shaft diameters, housing bores, and seal widths. Technical Specifications
The standard classifies seals into different types based on their design and application: Type A: Standard rubber-covered outer diameter.
Type AS: Features an additional dust lip to prevent external contamination. Type B: Metal outer diameter for more rigid housing bores.
Type C: Metal outer diameter with a reinforcement cap for heavy-duty use. Typical Materials
Materials are chosen based on the operating environment (temperature, chemical exposure, and speed):
NBR (Nitrile): Standard for general-purpose oil and grease sealing.
FKM (Viton): Used for high temperatures and harsh chemical environments.
PTFE (Teflon): High-performance material for low friction and extreme temperatures.
💡 Note: A PDF of DIN 3760 is a 12-page document often used by engineers and maintenance professionals to verify part tolerances and installation methods. If you're looking for something specific, I can help you: Find conversion charts to other standards (like ISO 6194). Compare NBR vs. FKM for your specific machine. Locate official platforms to purchase the full PDF. Which of these would be most helpful? DIN 3760 PDF - Engineering Standards Download
The DIN 3760 standard, established by the German Institute for Standardization (Deutsches Institut für Normung), is the definitive technical guide for the design, dimensions, and requirements of rotary shaft lip seals. Often referred to as "Simmerrings" or oil seals, these components are critical for retaining lubricants and preventing the ingress of dirt in unpressurized or low-pressure rotating equipment.
For engineers and procurement specialists, a DIN 3760 PDF datasheet is an essential reference for ensuring component compatibility and machine longevity. 1. Key Seal Designs and Forms
DIN 3760 classifies seals into three primary construction forms based on their outer diameter (OD) design:
Form A: Features a smooth elastomer (rubber) outer sleeve and an internal metal bracing shim. This is the most common version, providing excellent static sealing even in housings with high thermal expansion or increased surface roughness.
Form B: Uses a metal outer case without a rubber covering. This allows for a more precise, tighter "metal-to-metal" press-fit in the housing.
Form C: Similar to Form B but includes an additional reinforcing cap. This design offers maximum rigidity and is often used for larger seal sizes or in applications where installation conditions are harsh.
Note on Form AS (or RST): Any of the above forms can include an additional dust lip (denoted by 'S'). Form AS, for example, is a Form A seal with an extra lip to protect the primary sealing edge from external dust and grime. 2. Technical Specifications
The standard defines strict operational limits and material requirements to ensure performance across various industries. Rotary shaft seals - Techné
The Search for the Perfect Seal
It was a typical Monday morning at the machinery manufacturing plant, and engineer Emma was sipping her coffee as she began to tackle her day's tasks. She was working on a new project, designing a custom gearbox for a client in the automotive industry. As she sat at her desk, staring at her computer screen, she realized she needed to specify the correct type of seal for the gearbox's shaft.
Emma had worked with seals before, but she wanted to make sure she was choosing the right one for this particular application. She had heard of a German standard for seals, DIN 3760, and she suspected it might be relevant to her design.
She quickly opened her web browser and searched for "DIN 3760 PDF". After a few clicks, she found a reliable source for the standard and downloaded the PDF.
As she began to read through the document, Emma learned that DIN 3760 specified the requirements for rotary shaft seals, including their design, dimensions, and testing. She was relieved to find that the standard covered the exact type of seal she needed.
With the PDF open on her computer, Emma carefully reviewed the specifications, taking note of the seal's dimensions, material requirements, and performance criteria. She was impressed by the level of detail provided in the standard and felt confident that her design would meet the necessary requirements.
Using the information from the DIN 3760 PDF, Emma specified the correct seal for her gearbox design and sent the updated plans to her team for review. Throughout the project, she referred back to the standard, ensuring that every detail was accurate and precise.
Thanks to her diligence and the guidance provided by the DIN 3760 PDF, Emma's gearbox design was a success. The client was thrilled with the final product, and Emma's team was impressed by her attention to detail. As she looked back on the project, Emma realized that having access to the DIN 3760 PDF had been invaluable, allowing her to create a high-quality design that met the industry's standards.
The End
The DIN 3760 standard is the global benchmark for rotary shaft lip seals.
Whether you are an engineer designing a gearbox or a maintenance professional replacing a leaking seal, understanding this standard is critical for preventing fluid loss and protecting machinery from contaminants. What is DIN 3760?
DIN 3760 specifies the dimensions and requirements for rotary shaft lip seals. It ensures that seals from different manufacturers are interchangeable, provided they meet the standardized geometric and material criteria. Common Seal Types Under DIN 3760
The standard categorizes seals based on their outer diameter design and the presence of a dust lip:
Type A: Rubber-covered outer diameter. Best for thermal expansion and rougher housing bores.
Type AS: Same as Type A, but includes an additional dust lip to protect against external dirt.
Type B: Metal outer sleeve. Provides a tighter, more permanent fit in the housing. Type BS: Metal outer sleeve with an added dust lip.
Type C: Reinforced metal outer sleeve. Used for heavy-duty applications or large diameters. Key Technical Specifications
A DIN 3760 PDF typically outlines several critical parameters for performance:
Pressure Limits: Standard lip seals are usually designed for low-pressure environments (up to 0.5 bar).
Temperature Range: Heavily dependent on the elastomer used (e.g., NBR for general use, FKM for high heat).
Surface Speed: Defines the maximum rotational velocity the seal lip can handle without excessive friction.
Shaft Hardness: Requires a specific Rockwell hardness (often HRC 45–60) to prevent the seal from "grooving" the metal. Material Selection Guide
Choosing the right material is as important as the dimensions:
NBR (Nitrile): The standard "workhorse" material. Good for oils and greases.
FKM (Viton): Essential for high-temperature or chemically aggressive environments.
PTFE (Teflon): Used for extremely high speeds or dry-running conditions. Installation Best Practices
Even a high-quality DIN 3760 seal will fail if installed incorrectly. Lubricate the lip: Never install a seal dry. Check the shaft: Look for burrs, scratches, or rust.
Use a chamfer: The shaft should have a lead-in chamfer to avoid tearing the seal.
Apply even pressure: Use a press tool to ensure the seal sits perfectly square.
📍 Key Takeaway: Always verify your specific operating conditions—speed, temperature, and medium—against the DIN 3760 technical tables before selection.
If you need to find a specific cross-reference table or material compatibility chart, let me know! I can help you: Find the correct dimensions for your shaft size. Compare NBR vs. FPM/FKM for your specific fluid. Identify equivalent ISO standards (like ISO 6194).
FAQ: Quick Answers
Q: Is DIN 3760 the same as ISO 6194?
A: Mostly, but not exactly. ISO 6194 is the international equivalent. Many modern seals are dual-labeled. However, DIN 3760 has historically stricter requirements for the metal casing. Always check your customer drawing.
Q: Can I find a "DIN 3760 PDF" for free legally?
A: Usually, no. However, many seal manufacturers (e.g., Freudenberg, SKF, Parker) provide free extracts of the DIN 3760 dimensional tables on their product portals. You don't get the full text, but you get the dimensions you need.
Q: What does "BA" or "BABSL" mean on my seal?
A: Those are based on DIN 3760. "B" = Metal case, "A" = Dust lip, "BSL" = Heavy-duty spring. The standard defines these codes.
Summary
The DIN 3760 standard laid the groundwork for the modern radial shaft seals we use today. While you should reference DIN ISO 6194 for the most current official documentation, the dimensional legacy of DIN 3760 remains the industry standard.
Disclaimer: This blog post is for informational purposes only. For critical engineering applications, always refer to the official current standard documentation.
DIN 3760 is a fundamental German technical standard that specifies the dimensions, materials, and installation requirements for rotary shaft lip seals. These seals, commonly known as oil seals or Simmerrings, are designed to retain fluids like oil or grease in equipment with rotating shafts while preventing the ingress of dirt.
The standard was originally established by the German Institute for Standardization (Deutsches Institut für Normung) and remains active, with the current 1996 edition often used in parallel with the international ISO 6194 standard. Core Specifications of DIN 3760
The standard provides precise guidelines to ensure interchangeability and performance across different manufacturers. Rotary shaft lip seals DIN 3760 | norelem
3. University and Corporate Licenses
Many universities and large corporations maintain a standards library (e.g., IHS Markit, Techstreet, Perinorm). If you are a student or employee, check your internal portal first before paying.
The Problem with "Free DIN 3760 PDF" Searches
Be careful. While you can find scanned copies of DIN 3760 on various document-sharing sites (like PDF Coffee or Scribd), there are three major risks:
- Outdated Versions: Standards are revised. An old scan might be superseded (e.g., by DIN 3760:1996-08 or later harmonized ISO standards). Using an obsolete tolerance could ruin a production run.
- Poor Quality: Many free scans are unreadable with blurry tables or missing the critical Annex information.
- Legal & Ethical: Standards organizations like DIN and ISO rely on sales to fund their work. Using pirated copies in a commercial engineering firm exposes you to compliance risks.
Conclusion: Your Next Steps
Searching for a DIN 3760 PDF is the correct first step, but engineering wisdom lies in using the right version legally and safely. Here is a summary checklist:
- Identify your application: Type A (rubber coat) or Type B (metal coat)? Do you need a dust lip (AS)?
- Get the full dimensional table: Legally purchase the DIN 3760 PDF from Beuth Verlag or your national standards body.
- Match materials: Choose NBR for standard oil, FKM for high heat.
- Follow installation rules: Respect shaft hardness, bore finish, and pressing force.
By respecting the standard—and respecting the law by purchasing the official document—you ensure your rotating equipment remains leak-free, reliable, and professionally engineered.
Disclaimer: This article is for informational purposes only and does not replace the official DIN 3760 standard. Always consult the latest official document for legal and technical compliance.
standard defines the technical specifications for radial shaft seals used to retain lubricants or fluids in rotating shaft applications. It covers critical design parameters, including nominal dimensions, material performance, and housing/shaft requirements for unpressurized or low-differential pressure equipment. norelem USA Core Design Types
The standard specifies three primary construction forms, each available with an optional dust lip (denoted by an "S") to protect against external contamination. ERIKS webshop UK Type A (Rubber Covered):
Features an elastomeric outer sleeve. It is ideal for housings with high thermal expansion (e.g., light metal) or significant surface roughness. Type B (Metal Cased):
Utilizes an exposed metallic outer housing for a precise, tight fit. It is preferred when high extraction forces are present but requires tighter housing tolerances. Type C (Reinforced Metal Case):
Similar to Type B but includes a reinforcing inner cap for increased rigidity. This design is typically used for larger dimensions or harsh installation conditions. Tameson.com Technical Specifications and Material Limits
Performance is heavily dependent on the chosen elastomer and shaft operating conditions.
Understanding Radial Shaft Seals: A Quick Guide | R.E. Purvis If you are working with rotating machinery, you’ve
