APG stocks the H4X80, a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 80 mm (3.15 in), a cross section of 4 mm (0.157 in), and an outside diameter of 88 mm (3.46 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.
As a material, Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, low compression set under sustained load. This material stands up to propane and butane, petroleum-based oils, and hydraulic fluids. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).
It sees regular use in general industrial maintenance, fluid power, and automotive.
Stocked as H4X80 and sold individually. Unit weight is approximately 4.05 g. 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 4MM CS X 80MM ID BLACK BUNA 70D
Actual Outside Diameter 88 mm (3.46 inch)
Actual Cross Section 4 mm (0.157 inch)
Actual Inside Diameter 80 mm (3.15 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity