Q-243 BUNA 70 Q RING

This quad-ring is supplied in AS568-243 black Buna-N (Nitrile) 70 Shore A quad profile supplied with an inside diameter of 4.109 in (104.37 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.387 in (111.43 mm), catalogued under part number QH70243. It seats in a standard o-ring gland while offering improved dynamic performance.

Expect good resistance to propane and butane, water, and hydraulic fluids. 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. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or polar solvents.

It sees regular use in construction equipment, agricultural equipment, and general industrial maintenance.

Reference part number QH70243 when ordering; the item is sold individually. Unit weight is approximately 4.28 g. Check the compound against your process media, pressure and temperature before committing to a design.