This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 265 mm (10.433 in), a cross section of 5 mm (0.197 in), and an outside diameter of 275 mm (10.83 in), catalogued under part number H5X265. It delivers dependable bidirectional sealing in a compact groove envelope.
The material holds up against water, propane and butane, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is valued 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. Verify compatibility before use with strong acids or automotive brake fluid.
Maintenance and OEM teams specify it across agricultural equipment, fluid power, and construction equipment.
Reference part number H5X265 when ordering; the item is sold individually. Unit weight is approximately 20.282 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Description 5MM CS X 265MM ID BLACK BUNA 70D
Actual Outside Diameter 275 mm (10.83 inch)
Actual Cross Section 5 mm (0.197 inch)
Actual Inside Diameter 265 mm (10.433 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity