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Buna O-rings, Nitrile O-rings, NBR O-rings offer excellent sealing and mechanical properties at low cost. Buna Nitrile O-rings have resistance to common lubricants and are recommended for crude oil, gasoline, propane, petroleum oils and water.A Nitrile Buna O-rings are used in engines, gearboxes, aircraft pumps, and water applications.
Nitrile Buna-N NBR O-Rings are used as a face-to-face and shaft seals, and allow rotary and linear movement. Nitrile O-rings have good tear and abrasion resistance with operating temperature: -30° to +250F° (can be higher with special compounds).
These O-rings have eight points of contact for a better seal in dynamic applications than X-profile O-rings, plus they have eight grooves that hold lubricant to reduce friction and wear for a longer service life. They are made of Buna-N, which is resilient and offers excellent tear resistance. These O-rings resist grease, hydraulic oils, and motor oil. They're sized to the SAE standard AS568. X-Rings, also known as Quad-Ring Seals, can be used in a wide variety of static and dynamic sealing applications. In reciprocating applications, the X-Ring four-lobed design prevents spiral failure and in rotary applications, it prevents the seal from bunching and failing.