Q-395 BUNA 70 Q RING

Ordered as QH70395, this is an AS568-395 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 25.94 in (658.88 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 26.36 in (669.54 mm). The quad-ring provides a dual sealing band on each contact face for improved reliability.

As a material, Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. It resists petroleum-based oils, many alcohols, and greases and lubricants. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving ozone and direct sunlight or polar solvents call for a different compound. 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 construction equipment, agricultural equipment, and hydraulic and pneumatic systems.

Stocked as QH70395 and sold individually. Nominal inside diameter is listed as 26 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.