7MM CS X 186MM ID BLACK BUNA 70D

This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 186 mm (7.323 in), a cross section of 7 mm (0.276 in), and an outside diameter of 200 mm (7.87 in), catalogued under part number H7X186. It remains the most cost-effective sealing element available for pressurized assemblies.

It resists propane and butane, many alcohols, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is known for low compression set under sustained load and an economical choice for high-volume maintenance programs. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

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

H7X186 ships individually. Unit weight is approximately 28.7313 g. Review your operating media and conditions against this specification before installation.