-341 BLACK BUNA 70D X-RING

This quad-ring is supplied in AS568-341 black Buna-N (Nitrile) 70 Shore A with an inside diameter of 3.475 in (88.27 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.895 in (98.93 mm), catalogued under part number QH70341. It resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

The compound resists many alcohols, hydraulic fluids, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. The profile itself contributes a parting line located away from the sealing surface and lower compressive load required to achieve a seal.

Maintenance and OEM teams specify it across general industrial maintenance, automotive, and hydraulic and pneumatic systems.

Reference part number QH70341 when ordering; the item is sold individually. Unit weight is approximately 8.512 g and nominal inside diameter is listed as 3 1/2 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.