Q-343 BUNA 70 Q RING

Ordered as QH70343, this is an AS568-343 black Buna-N (Nitrile) 70 Shore A Quad-Ring measuring an inside diameter of 3.725 in (94.62 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.145 in (105.28 mm). The quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, strong abrasion and tear resistance. It resists petroleum-based oils, propane and butane, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes a parting line located away from the sealing surface and resistance to the spiral twisting that defeats round-section rings.

Common environments for this compound include construction equipment, automotive, and fluid power.

This item is sold individually under part number QH70343. Unit weight is approximately 9.19 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.