The H70210 is an AS568-210 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 0.734 in (18.64 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.012 in (25.7 mm). This o-ring remains the most cost-effective sealing element available for pressurized assemblies.
Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, most widely specified general-purpose sealing elastomer. This material stands up to propane and butane, water, and hydraulic fluids. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where polar solvents or ketones are present.
Maintenance and OEM teams specify it across construction equipment, hydraulic and pneumatic systems, and automotive.
Order part number H70210, sold individually. Unit weight is approximately 0.843 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Description -210 BLACK BUNA 70D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 0.734 inch (18.64 mm)
Actual Outside Diameter 1.012 inch (25.7 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity