【Function】Double seal O-ring and prevent water leakage in faucets, sinks, filters and machines 【High quality】The O-ring is made of high quality commercial grade nitrile rubber (NBR) materials, which can resist ultraviolet rays, lubricants and grease 【Application】The Buna-N rubber ring is suitable for household, hydraulic, industrial and pneumatic applications 【Usage environment】Soft rubber construction improves durability for long-term use in static and dynamic cylinder fittings 【Brand new】Brand new high quality sealing rubber ring, strictly full tested to ensure the best quality before shipment, safe to use Features: 1. O-ring double seal and prevent water leakage in faucets, sinks, filters and machines 2.The O-ring is made of high quality commercial grade nitrile rubber (NBR) materials, which can resist ultraviolet rays, lubricants and grease 3.The Buna-N rubber ring is suitable for household, hydraulic, industrial and pneumatic applications 4.Soft rubber construction improves