Earls An 901 Aluminum Crush Washer - Bagged Packaging - Fitting Size -4An - 7/16 In. Id - Package Of 10 - - 177004ERL
Use With Adapter Fittings
To be used with straight threaded adapter fittings when sealing at a port which has no relief for an O ring.
Earl's Performance Plumbing brought aviation fluid transfer technology to the automotive performance market over five decades ago and top funny car and open wheel teams still rely on Earl's today.
