The NBR Rubber Seal (Nitrile Butadiene Rubber Seal) is a specialized sealing component made from high-performance synthetic rubber—NBR. It is well-known for its excellent resistance to oils, greases, fuels, and compressed air, making it an ideal choice for industrial applications that demand high durability and long-term sealing reliability.
Material: NBR (Nitrile Butadiene Rubber)
Hardness: 70 ~ 85 Shore A
Color: Black (or customized upon request)
Operating Temperature Range: –25°C to +120°C (higher with special-grade NBR)
Resistance properties:
✅ Mineral oils, engine oils, hydraulic oils
✅ Lubricating grease, compressed air
✅ Light mechanical wear
NBR rubber seals are widely used in various industries:
Mechanical engineering and machinery manufacturing: Shaft sealing, flange gaskets, bearing support pads.
Automotive and motorcycles: Crankshaft seals, drive shaft seals, oil pump seals.
Oil & gas and light chemical industries: Valve seals, flange joints, pump seals.
Hydraulic and pneumatic equipment: Piston seals, control valve gaskets, cylinder seals.
✅ Excellent oil resistance – Compatible with IRM 901/902/903 oils, diesel, and engine oil
✅ High mechanical strength – No cracking or tearing under long-term operation
✅ Versatile manufacturability – Available in various sizes and custom shapes
✅ Cost-effective – Ideal for mass production and maintenance use
We offer NBR rubber seals manufactured by machining or compression molding according to:
Outer diameter (OD), inner diameter (ID), and thickness based on technical drawings
Flat faces, stepped or beveled designs, with positioning grooves or oil-retaining lips
Hardness range: from soft 60 Shore A to rigid 90 Shore A depending on the application
With a team of experienced rubber engineers, we provide full-service design and production of NBR rubber seals based on:
Technical drawings
Actual product samples
Special application requirements (high pressure, vibration, high-temperature oil environments)
