Part number H70MD435 is an AS568-435 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 5.725 in (145.42 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.275 in (159.39 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.
As a material, Buna-N (Nitrile) is specified for low compression set under sustained load, strong abrasion and tear resistance. The compound resists petroleum-based oils, water, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or ozone and direct sunlight.
This item is metal detectable for HACCP and foreign-body control programs. It sees regular use in automotive, construction equipment, and agricultural equipment.
This item is sold individually under part number H70MD435. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.
Description -435 BLACK BUNA 70D O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 5.725 inch (145.42 mm)
Actual Outside Diameter 6.275 inch (159.39 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable