Ordered as H70MD173, this is an AS568-173 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 8.487 in (215.57 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 8.693 in (220.8 mm). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.
The material holds up against hydraulic fluids, water, and many alcohols. Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).
The compound is metal detectable for HACCP and foreign-body control programs. You will find this material specified across hydraulic and pneumatic systems, agricultural equipment, and automotive.
Order part number H70MD173, sold individually. Nominal inside diameter is listed as 8 1/2 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 -173 BLACK BUNA 70D O-RING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 8.487 inch (215.57 mm)
Actual Outside Diameter 8.693 inch (220.8 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable