-446 WHITE BUNA 70D FDA O-RING

The H70FDA446 is an AS568-446 white Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 8.475 in (215.27 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 9.025 in (229.24 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against petroleum-based oils, water, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is known for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where polar solvents or automotive brake fluid are present.

This item meets FDA requirements for food contact, is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across agricultural equipment, general industrial maintenance, and hydraulic and pneumatic systems.

Stocked as H70FDA446 and sold individually. Nominal inside diameter is listed as 8 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.