This o-ring is supplied in AS568-334 black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 2.6 in (66.04 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.02 in (76.71 mm), catalogued under part number H70334. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
This material stands up to water, hydraulic fluids, and propane and butane. Buna-N (Nitrile) is widely chosen for low compression set under sustained load and 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. Applications involving ketones or polar solvents call for a different compound.
Maintenance and OEM teams specify it across hydraulic and pneumatic systems, construction equipment, and general industrial maintenance.
Reference part number H70334 when ordering; the item is sold individually. Unit weight is approximately 6.127 g and nominal inside diameter is listed as 2 5/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description -334 BLACK BUNA 70D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 2.6 inch (66.04 mm)
Actual Outside Diameter 3.02 inch (76.71 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity