-356 BLACK BUNA 70D O-RING

APG stocks the H70356, an AS568-356 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 5.35 in (135.89 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.77 in (146.56 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Buna-N (Nitrile) is widely chosen for low compression set under sustained load, strong abrasion and tear resistance. It resists hydraulic fluids, water, and propane and butane. 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 ozone and direct sunlight or strong acids.

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

H70356 ships individually. Unit weight is approximately 12.12 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.