55x47x4mm Nitrile Rubber O-Rings 10 Pieces Round Black

55mm x 47mm x 4mm Nitrile Rubber O-Rings Round Sealing Washers. Function - Repair oil leaks, hydraulic oil and waste water. Nitrile O-rings are one of the most commonly used sealing elastomers due to their resistance to petroleum-based fuels and lubricants. Application - Perfect for kitchens, bathrooms, car engines, pressure washers and plumbing. Caution - Not recommended for applications in engines that produce ozone, welding equipment or exposure to sunlight.