Cylindrical plug A.F.O.®

threadedstainless steelvent

The Dual Sealing A.F.O. Plug comes with all the strength and ease of use offered by our regular A.F.O. Plugs, but with added safety features for use in hydraulic systems. Incorporating an O-ring allows users to vent gas out of a side port or safely release trapped high-pressure gas. This enables the Dual Sealing A.F.O. Plug to be used for “fill and drain” applications. In addition, a newer higher pressure version of this product is available with backup rings rated to seal up to 15,000 psi when partially open. The Dual Sealing A.F.O. Plug is available in stainless steel and can be purchased in diameters of 0.3125, 0.375, 0.500, and 0.750 of an inch. The .500-20 stainless steel dual sealing A.F.O. is a thread retained plug designed to apply Axial Force Only on the installation hole, allowing for minimal wall thickness. It utilizes a metal to metal seal for high pressure applications and also incorporates an O-ring for venting or charging. Pressure can be vented out of a side port to remove air from a hydraulic system or safely release trapped gas. A.F.O. plugs are both removable and reuseable, providing easy access to sealed passageways. They feature a unique floating seal that self-aligns to allow for threaded holes that are not perfectly concentric with the thru-hole. And, the sealing elements resist rotation during installation, which prevents galling of the seat. Dual sealing for venting or charging. Seals up to 54,000 psi closed (372 Mpa) and 1,500 psi open (10 Mpa). Reuseable, allowing easy access to sealed passageways.