Patent ID: 6162000
Filing Date: 2000-12-19
Classification: B01D,F16B

Abstract:
A nut in combination with an engine air filter housing comprising:the nut including a nut body having a top surface and a bottom surface, with a threaded bore extending therethrough between the top and bottom surfaces, the bottom surface being generally planer with a groove cut therein circumferentially around the threaded bore, an O-ring received within the groove and elastically retained therein, the O-ring having a thickness which is substantially less than the area of the bottom surface so as to occupy less than half the bottom surface area;the nut and the air filter housing are received on a protruding screw such that the O-ring engages and compress against the filter housing whereby the O-ring both seals and protects the air filter housing and provides a locking to inhibit the center nut from backing off the screw.