Core keywords: NBR O-ring, nitrile rubber seal, wear-resistant oil-proof gasket, industrial hydraulic sealing ring
Crafted from premium nitrile rubber (NBR), these standard O-rings adopt precision molding and smooth surface polishing without burrs, with tight dimensional tolerance controlled by AS568, JIS and GB industrial standards. Hardness ranges 20–90 Shore A, operating temperature -40℃ to 100℃.

Core strengths lie in outstanding wear resistance, strong petroleum oil/fuel resistance, low compression set and stable elasticity, supporting both static and dynamic high-pressure sealing. Waterproof, anti-corrosion and durable for long-cycle friction scenarios.

Widely applied in automotive engines, hydraulic pumps, valves, machinery cylinders, pipeline fittings and electrical equipment. Full standard sizes in stock; we support OEM & ODM custom service: bespoke inner/wire diameter, black or customized colors, printed logos and special hardness formulas. As a direct manufacturer, we deliver cost-effective, certified seals with flexible MOQ and fast lead time.