A standard seal governed by DIN 3760 typically consists of three primary parts:
Used in heavy-duty applications, larger sizes, or harsh environments where structural rigidity is paramount. Type CS (Reinforced Metal OD with Dust Lip)
When looking for a , engineers, buyers, and maintenance professionals are typically seeking a definitive technical reference to ensure cross-brand interchangeability and system compatibility. This comprehensive guide provides an in-depth breakdown of the standard’s specifications, standard design forms, material selections, and vital installation guidelines required for optimal application performance. 1. What is the DIN 3760 Standard?
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.
DIN 3760 is a widely accepted standard in the industry for radial shaft seals used in rotating equipment, such as pumps, gearboxes, and motors. The standard specifies the design, materials, and testing requirements for radial shaft seals to ensure their performance, reliability, and durability. din 3760 pdf
The Type CS seal combines the reinforced double-wall metal shell construction of Type C with a protective dust lip. Material Specifications
High-temperature environments, synthetic lubricants, acids, and aggressive chemicals. Silicone Rubber -55∘Cnegative 55 raised to the composed with power C +150∘Cpositive 150 raised to the composed with power C
You can find detailed technical papers and the full standard (often behind a paywall or on document-sharing sites) via these representative sources: Full Standard Reference: The most recent major revision is DIN 3760:1996-09 , which supersedes the 1972 edition. Technical Summaries: Sites like
From the perspective of designers, maintenance engineers, and procurement specialists, having access to the official is crucial for several reasons: A standard seal governed by DIN 3760 typically
Rotary shaft lip seals are designed primarily for unpressurized or low-pressure operations.
| | Temperature Range | Maximum Peripheral Speed | Typical Applications | | :--- | :--- | :--- | :--- | | NBR (nitrile rubber, 72 Shore A) | −30 °C to +100 °C (short‑term to +108 °C) | 10–14 m/s | Mineral oils, greases, diesel, water (up to +60 °C) | | FKM (fluoro rubber) | −20 °C to +200 °C (short‑term to +204 °C) | 34–37 m/s | High temperatures, aggressive chemicals, flame‑resistant fluids |
The standard has undergone several revisions to keep pace with technological advancements. The current active edition is , released in September 1996. It replaced older editions from April 1972 and February 1962.
Never hammer directly on the seal, as this will deform the metal casing and permanently damage the sealing lip. The standard, titled "Radial shaft seals - Design,
The standard classifies seals into different types based on their design and application: : Standard rubber-covered outer diameter.
A rigid ring embedded in the elastomer to provide structural stability.
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
TYPE A / AS TYPE B / BS TYPE C / CS +-----------------+ +-----------------+ +-----------------+ | #### [Metal] | | [Exposed Met.] | | [Reinforced] | | #+----------+ | | +-----------+ | | +-----------+ | | #| | | | | | | | | +-----+ | | | #| (Garter) | | | (Garter) | | | | | | | | | #| Spring | | | Spring | | | | +-----+ | | | #+----------+ | | +-----------+ | | +-----------+ | | #### / | / | | / | | # / | / | | / | +--------------+ +------------+ + +------------+ + (Rubber OD) (Metal OD) (Reinforced Metal OD) Note: "S" versions feature an additional trailing dust lip (e.g., AS, BS, CS). Type A (Form A)
Standard DIN 3760 seals are typically designed for low-pressure environments (up to 0.5 bar). Temperature Range: Varies by material, typically ranging from negative 40 raised to the composed with power C positive 200 raised to the composed with power C Why You Might Need the PDF Engineers and procurement teams often look for the DIN 3760 PDF to access: Tolerance Tables: Exacting measurements for housing bores ( ) and shaft finishes. Installation Guides: