H70FDA418 is an AS568-418 white Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 3.6 in (91.44 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 4.15 in (105.41 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
As a material, Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. The material holds up against hydraulic fluids, water, and many alcohols. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or ketones are present.
This o-ring meets FDA requirements for food contact under 21 CFR 177.2600. You will find this material specified across agricultural equipment, fluid power, and construction equipment.
H70FDA418 ships individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.
Description -418 WHITE BUNA 70D FDA O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 3.6 inch (91.44 mm)
Actual Outside Diameter 4.15 inch (105.41 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable