H70MD356 is an AS568-356 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 5.35 in (135.89 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.77 in (146.56 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.
Expect good resistance to hydraulic fluids, many alcohols, 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). Applications involving automotive brake fluid or polar solvents call for a different compound.
The compound is metal detectable for HACCP and foreign-body control programs. Typical settings include automotive, agricultural equipment, and hydraulic and pneumatic systems.
Order part number H70MD356, sold individually. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -356 BLACK BUNA 70D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 5.35 inch (135.89 mm)
Actual Outside Diameter 5.77 inch (146.56 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable