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/BUNA-N (NBR)
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.
| MATERIAL |
Nitrile/Buna-N (NBR) |
| TEMPERATURE RANGE |
-40°F to 212°F (-40°C to 100°C)
|
|
AVOID
|
- Sunlight
- UV light,
- Ozone and general outdoor weathering
- Hash chemicals
- Acids
|
