The 12FLOR BUNA-N 90DURO O-rings from Fittings Unlimited Inc are essential for sealing applications in hydraulic and pneumatic systems. Each bag contains 50 high-quality O-rings made from BUNA-N material, known for its excellent resistance to oils, fuels, and other chemicals. With a durometer rating of 90, these O-rings provide a robust seal, ensuring minimal leakage and optimal performance. Their precise dimensions make them compatible with a variety of fittings and connectors, making them a versatile choice for maintenance and repair tasks.