Q-465 BUNA 70 Q RING

This quad-ring is supplied in AS568-465 black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 17.955 in (456.06 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 18.505 in (470.03 mm), catalogued under part number QH70465. It seats in a standard o-ring gland while offering improved dynamic performance.

It resists many alcohols, hydraulic fluids, and propane and butane. Buna-N (Nitrile) is known for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It should not be specified for service in polar solvents or ozone and direct sunlight. The profile itself contributes lower compressive load required to achieve a seal and resistance to the spiral twisting that defeats round-section rings.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, automotive, and construction equipment.

This item is sold individually under part number QH70465. Nominal inside diameter is listed as 18 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.