APG stocks the H3.53X57.15, a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 57.15 mm (2.25 in), a cross section of 3.53 mm (0.139 in), and an outside diameter of 64.21 mm (2.53 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
Buna-N (Nitrile) delivers reliable performance in both static and dynamic service, low compression set under sustained load. The compound resists petroleum-based oils, hydraulic fluids, and water. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.
Common environments for this compound include general industrial maintenance, fluid power, and agricultural equipment.
H3.53X57.15 ships individually. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description 3.53MM CS X 57.15MM ID BLACK BUNA 70D
Actual Outside Diameter 64.21 mm (2.53 inch)
Actual Cross Section 3.53 mm (0.139 inch)
Actual Inside Diameter 57.15 mm (2.25 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity