Oil Seal RICH 20 x 42.5 x 3.8/5 HNBR – High-Performance Thermal Sealing
Technical Specifications:
- Catalog Code: 20 x 42.5 x 3.8/5 HNBR RICH
- Brand: RICH
- Type: Oil Seal / Shaft Seal / Sealing Ring
- Inner Diameter (d): 20 mm
- Outer Diameter (D): 42.5 mm
- Height 1 (h1): 3.8 mm
- Height 2 (h2): 5 mm
- Material: HNBR (Hydrogenated Nitrile Butadiene Rubber)
- Country of Origin: China
Key Performance Advantages:
- Advanced HNBR Stability: Formulated with HNBR to bridge the gap between NBR and FPM, offering superior heat resistance (up to 150°C) and excellent mechanical strength compared to standard nitrile rubber.
- Enhanced Chemical Resistance: Specifically designed to withstand aggressive oils, fuel additives, and sour gases, preventing the seal from swelling or hardening in modern technical fluids.
- Precision Dual-Height Profile: The 3.8/5 mm profile allows for a secure fit in specialized housings, providing optimal radial pressure on the 20 mm shaft while accommodating specific assembly tolerances.
- Superior Abrasion Resistance: HNBR provides high physical strength and resistance to wear, significantly extending the service life of the seal in dynamic, high-friction applications.
- Oxidative and Ozone Protection: Excellent resistance to environmental degradation, ensuring the seal maintains its elastic properties even during intermittent operation or long-term storage.
Typical Applications:
- Automotive engine components including timing systems and air conditioning compressors
- High-temperature industrial pumps and hydraulic systems
- Precision drivetrain assemblies requiring resistance to aggressive synthetic lubricants
Transparency Note: This product is manufactured under the RICH brand. All dimensions and technical data are provided strictly for identification and compatibility purposes and do not imply any affiliation with other manufacturers.
