Part number H70MD437 is an AS568-437 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 5.975 in (151.77 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.525 in (165.74 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
It resists many alcohols, propane and butane, and greases and lubricants. Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. 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 strong acids.
This item is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include hydraulic and pneumatic systems, agricultural equipment, and fluid power.
Stocked as H70MD437 and sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description -437 BLACK BUNA 70D O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 5.975 inch (151.77 mm)
Actual Outside Diameter 6.525 inch (165.74 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable