This o-ring is supplied in AS568-344 black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 3.85 in (97.79 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.27 in (108.46 mm), catalogued under part number H70MD344. It compresses into its gland to block fluid or gas migration across a joint.
Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. The compound resists propane and butane, many alcohols, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or ketones.
This item is metal detectable for HACCP and foreign-body control programs. You will find this material specified across hydraulic and pneumatic systems, automotive, and fluid power.
Reference part number H70MD344 when ordering; the item is sold individually. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -344 BLACK BUNA 70D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 3.85 inch (97.79 mm)
Actual Outside Diameter 4.27 inch (108.46 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable