APG stocks the H70MD346, an AS568-346 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 4.1 in (104.14 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.52 in (114.81 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.
As a material, Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. Expect good resistance to greases and lubricants, propane and butane, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).
The compound is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across automotive, agricultural equipment, and hydraulic and pneumatic systems.
This item is sold individually under part number H70MD346. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Description -346 BLACK BUNA 70D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 4.1 inch (104.14 mm)
Actual Outside Diameter 4.52 inch (114.81 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable