RS PRO Nitrile Rubber (NBR) Rotary Shaft Seal, 20 mm ID, 42 mm OD, 7 mm Thickness 226-3745

RS PRO 226-3745 is a Nitrile Rubber (NBR) rotary shaft seal designed with a 20 mm inside diameter, 42 mm outside diameter, and a thickness of 7 mm. It provides effective sealing solutions where shafts rotate under lubricated conditions such as in driveshafts, crankshafts, and hydraulic cylinders.

Manufactured from nitrile rubber (NBR), this seal offers excellent resistance to lubrication oils, hydraulic fluids, and grease, making it a cost-efficient choice widely used across various mechanical and fluid power systems. It operates reliably within a temperature range of -20°C to 90°C, maintaining its structural integrity under industrial environments.

The seal's mechanical properties include a hardness of 70 ±5 shore A, tensile strength of 18.9 MPa, and an elongation capacity of 438%, supporting durability and flexibility in demanding applications. Its specific gravity of 1.25 ± 0.03 g/cm³ ensures consistent material quality, while tear resistance of 58 N/mm contributes to its longevity during operation.

However, it is important to note that this NBR seal is not suitable for exposure to brake oil, phosphoric ester, or ester-based fluids due to material incompatibility. Constructed from cost-effective and commonly available nitrile rubber (NBR) material.

Commonly applied in driveshafts, crankshafts, and hydraulic cylinders where oil or grease lubrication is required. Operates across a temperature range of -20°C to 90°C for reliable performance. Hardness of 70 ±5 shore A provides mechanical resilience.

Tensile strength of 18.9 MPa supports structural durability. Elongation at break measured at 438% allows flexibility. Specific gravity at 1.25 ± 0.03 g/cm³ ensures consistent material density. Tear resistance of 58 N/mm enhances service life.

Color: Black for easy identification and application.

This seal is ideal for various industrial uses including mechanical, fluid power systems, manufacturing machinery, and hydraulic equipment requiring dependable rotary shaft sealing. Ensure compatibility of the seal material with your application's fluid environment before use.

Explore similar Seals and rotary shaft components in the Mechanical Machinery & Spares category on EnvMart for comprehensive sealing solutions.