Q-010 BUNA 70 Q RING

APG stocks the QH70010, an AS568-010 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 0.239 in (6.07 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 0.379 in (9.63 mm). A quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Expect good resistance to greases and lubricants, propane and butane, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or automotive brake fluid. The profile itself contributes lower compressive load required to achieve a seal and a parting line located away from the sealing surface.

You will find this material specified across hydraulic and pneumatic systems, construction equipment, and general industrial maintenance.

Stocked as QH70010 and sold individually. Unit weight is approximately 0.079 g. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.