Q-202 BUNA 70 Q RING

Ordered as QH70202, this is an AS568-202 black Buna-N (Nitrile) 70 Shore A quad profile Quad-Ring supplied with an inside diameter of 0.234 in (5.94 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.512 in (13 mm). The quad-ring provides a dual sealing band on each contact face for improved reliability.

It resists water, hydraulic fluids, and propane and butane. Buna-N (Nitrile) delivers low compression set under sustained load, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where strong acids or ozone and direct sunlight are present.

Maintenance and OEM teams specify it across agricultural equipment, hydraulic and pneumatic systems, and construction equipment.

Reference part number QH70202 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.