Part number H70MD169 is an AS568-169 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 7.487 in (190.17 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 7.693 in (195.4 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.
The material holds up against water, greases and lubricants, and petroleum-based oils. Buna-N (Nitrile) is specified for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or automotive brake fluid will shorten service life.
The compound is metal detectable for HACCP and foreign-body control programs. It sees regular use in construction equipment, automotive, and hydraulic and pneumatic systems.
H70MD169 ships individually. Nominal inside diameter is listed as 7 1/2 inch. Check the compound against your process media, pressure and temperature before committing to a design.
Description -169 BLACK BUNA 70D O-RING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 7.487 inch (190.17 mm)
Actual Outside Diameter 7.693 inch (195.4 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable