The H70MD335 is an AS568-335 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 2.725 in (69.22 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.145 in (79.88 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
Buna-N (Nitrile) is specified here for low compression set under sustained load and most widely specified general-purpose sealing elastomer. The material holds up against many alcohols, water, and hydraulic fluids. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.
This o-ring is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include construction equipment, hydraulic and pneumatic systems, and automotive.
Order part number H70MD335, sold individually. Nominal inside diameter is listed as 2 3/4 inch. 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 -335 BLACK BUNA 70D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 2.725 inch (69.22 mm)
Actual Outside Diameter 3.145 inch (79.88 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable