Q-226 BUNA 70 Q RING

Ordered as QH70226, this is an AS568-226 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 1.984 in (50.39 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.262 in (57.45 mm). The quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

Buna-N (Nitrile) offers reliable performance in both static and dynamic service, strong abrasion and tear resistance. The material holds up against propane and butane, water, and many alcohols. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ozone and direct sunlight. The profile itself contributes two sealing bands per contact face rather than one and a parting line located away from the sealing surface.

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

Order part number QH70226, sold individually. Unit weight is approximately 2.185 g and nominal inside diameter is listed as 2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.