This o-ring is supplied in AS568-433 black Buna-N (Nitrile) 70 Shore A built to an inside diameter of 5.475 in (139.07 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.025 in (153.04 mm), catalogued under part number H70MD433. It creates a positive seal at flange, piston and rod interfaces without added hardware.
As a material, 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, propane and butane, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or polar solvents are present.
The compound is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include automotive, hydraulic and pneumatic systems, and agricultural equipment.
Order part number H70MD433, sold individually. Nominal inside diameter is listed as 5 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Description -433 BLACK BUNA 70D O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 5.475 inch (139.07 mm)
Actual Outside Diameter 6.025 inch (153.04 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable