This o-ring is supplied in AS568-387 black Buna-N (Nitrile) 70 Shore A with an inside diameter of 17.955 in (456.06 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 18.375 in (466.73 mm), catalogued under part number H70MD387. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.
Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. This material stands up to hydraulic fluids, many alcohols, and petroleum-based oils. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ketones.
This item is metal detectable for HACCP and foreign-body control programs. It sees regular use in hydraulic and pneumatic systems, construction equipment, and automotive.
Order part number H70MD387, sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description -387 BLACK BUNA 70D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 17.955 inch (456.06 mm)
Actual Outside Diameter 18.375 inch (466.73 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable