1MM CS X 21MM ID BLACK BUNA 70D

H1X21 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 21 mm (0.827 in), a cross section of 1 mm (0.039 in), and an outside diameter of 23 mm (0.91 in). In service, this o-ring remains the most cost-effective sealing element available for pressurized assemblies.

It resists many alcohols, water, and greases and lubricants. Buna-N (Nitrile) is specified for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

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

H1X21 ships individually. Unit weight is approximately 0.0681 g. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.