-474 BLACK BUNA 70D O-RING

The H70474 is an AS568-474 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 24.94 in (633.48 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 25.49 in (647.45 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs and low compression set under sustained load. The material holds up against water, greases and lubricants, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving ketones or polar solvents call for a different compound.

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

Reference part number H70474 when ordering; the item is sold individually. Unit weight is approximately 94.2996 g and nominal inside diameter is listed as 25 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.