Metric Rotary Shaft Oil Seal
Rotary Shaft Oil Seals – R21 & R22 Profiles
R21 Rotary Shaft Oil Seal The R21 oil seal is a single‑lip, spring‑loaded, rubber‑coated rotary shaft seal with a metal inner case. It is one of the most widely used profiles for general‑purpose oil retention in rotating equipment.
R22 Rotary Shaft Oil Seal The R22 oil seal is a double‑lip, double‑sprung, rubber‑coated seal with a metal inner case. The additional dust lip provides enhanced protection against contamination, making it ideal for harsher operating environments.
Both R21 and R22 seals are available in Nitrile (NBR), Viton (FKM) and Silicone to suit a wide range of temperatures, chemicals, and lubrication types.
What Rotary Shaft Oil Seals Do
Rotary shaft oil seals—also known as lip seals, radial shaft seals, or oil seals—are designed to retain lubricants and exclude contaminants around rotating components such as shafts and bores. Typical applications include:
- Hydraulic pump seals
- Axle and hub seals
- Gearbox and transmission seals
- Power steering systems
- Industrial drives and rotating machinery
Modern oil seals evolved from early leather designs. Today’s elastomer‑based seals incorporate a garter spring to maintain consistent radial pressure, compensating for lip wear and ensuring long‑term sealing performance.
Why Choose Transpower Drives for Oil Seals?
Transpower Drives supplies a comprehensive range of R21, R22, and other rotary shaft oil seal profiles in both metric and imperial sizes. With materials including Nitrile, Viton, and Silicone, we provide reliable sealing solutions for industrial, automotive, agricultural, and hydraulic applications.
Whether you need a single‑lip R21, a double‑lip R22, or a specialist high‑temperature or chemical‑resistant seal, our team can help you select the right product for your application.
