An O-ring, or torus, is a doughnut-shaped object or mechanical gasket generally made from an elastomer. O-rings can also be made from PTFE, other plastic materials, metals, and be made hollow or solid. O-rings often have a round cross-section.
O-rings commonly provide a pressure and fluid seal between cylindrically shaped, overlapping mating surfaces and are commonly used for engines, faucets, flanges, valves, and various cylinders.
Nitrile, more commonly known as Buna-N, o-rings are the most popular and widely used o-rings because of their low cost, good mechanical performance and resistance to water, most basic oils, lubricants and some fuels. Buna-N o-rings typically tend to function well in applications that have limited temperature and resistance requirements.
-40°F to 212°F (-40°C to 100°C)
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