H70MD904 is an AS568-904 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 0.351 in (8.92 mm), a cross section of 0.072 in (1.83 mm), and an outside diameter of 0.495 in (12.57 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.
The material holds up against hydraulic fluids, greases and lubricants, and propane and butane. Buna-N (Nitrile) is specified for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).
This o-ring is metal detectable for HACCP and foreign-body control programs. It sees regular use in automotive, fluid power, and hydraulic and pneumatic systems.
Order part number H70MD904, sold individually. Nominal inside diameter is listed as 1/4 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.
Description -904 BLACK BUNA 70D O-RING
Actual Cross Section 0.072 inch (1.83 mm)
Actual Inside Diameter 0.351 inch (8.92 mm)
Actual Outside Diameter 0.495 inch (12.57 )
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable