Oil-Rite Corp. Vent Plug with Filter and Deflector, 1/2" Male NPT A5170-4

Vent Plugs with Filters and Deflectors can be used to relieve pressure or vacuum on bearing housing, gear boxes, reservoirs, or any application where venting is necessary. These vent plugs assure pressure equalization and minimize undesirable problems, such as bearing seal blowout due to excessive pressure. The vent plugs allow air to freely communicate through a 40 micron cellulose filter. A splash deflector prevents liquid from spilling into the vent hole and outside. The unit withstands temperatures up to 225° F. The body is plated steel and has a 1/2” Male NPT. It has an 15/16” hex size and the total height is 1 5/16”. To remove the filter, simply unscrew the hex cap on top. A cost-effective replacement filter is available (part no. B751-16).