H70MD262 is an AS568-262 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 6.984 in (177.39 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 7.262 in (184.45 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
It resists hydraulic fluids, greases and lubricants, and many alcohols. Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer, strong abrasion and tear resistance. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving ozone and direct sunlight or automotive brake fluid call for a different compound.
The compound is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across fluid power, construction equipment, and general industrial maintenance.
Reference part number H70MD262 when ordering; the item is sold individually. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Description -262 BLACK BUNA 70D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 6.984 inch (177.39 mm)
Actual Outside Diameter 7.262 inch (184.45 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable