O-Ring: 4" ID x 4-7/8" OD, 5/16" Thick, Dash 340, Nitrile Butadiene Rubber MPN:340GSKBUX

The O-Ring has a nominal diameter of 4 inches, an OD dimension of 4-7/8 inches, and a thickness of 5/16 inches, rendering it suited for sealing large-sized gaps or clearances in static applications where chemical resistance and temperature resistance are essential. Manufactured using nitrile butadiene rubber (NDR), the O-ring demonstrates outstanding resistance to oil, water, gasoline, hydrocarbon, mineral oils, vegetable-based hydraulic fluids, air, steam, as well as temperatures from -45F (-42.78C) to +300F (149C). With a durometer hardness of 70 Shore A, the O-ring is ideal for sealing static or slow-moving components in industrial equipment manufacturing and hydraulic systems repair, with a preference towards sealing in pumps, compressors, motors, machinery, or as washers due to its excellent chemical, abrasion, fatigue and high-pressure resistance.