Q-332 BUNA 70 Q RING

QH70332 is an AS568-332 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 2.35 in (59.69 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.77 in (70.36 mm). In service, this quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

Expect good resistance to water, hydraulic fluids, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen 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. Exposure to automotive brake fluid or polar solvents will shorten service life. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and two sealing bands per contact face rather than one.

Common environments for this compound include automotive, hydraulic and pneumatic systems, and agricultural equipment.

Order part number QH70332, sold individually. Unit weight is approximately 5.6268 g and nominal inside diameter is listed as 2 3/8 inch. 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.