Abstract: An oil seal having the usual lips for retaining oil and a guide member made of a variety of relatively stiff or rigid materials. The guide member is made slightly larger than the smallest diameter of the seal member when the seal rests on the shaft. The seal member can have the guide member on either the air side or the oil side of the seal. The disclosure also relates to a shipping plug, which is inserted into the seal and retains the oil in place during shipping when the seal is installed but a shaft is not installed.

Abstract: An oil seal having the usual lips for retaining oil and a guide member made of a variety of relatively stiff or rigid materials. The guide member is made slightly larger than the smallest diameter of the seal member when the seal rests on the shaft. The seal member can have the guide member on either the air side or the oil side of the seal. The disclosure also relates to a shipping plug, which is inserted into the seal and retains the oil in place during shipping when the seal is installed but a shaft is not installed.

Abstract: A hub cap vent plug which is resistant to penetration by water sprayed under high pressure during vehicle washing. The plug includes an axially outer end face portion, sidewall portions adapted to mate in fluid-tight relation with an opening in an associated hub cap, and a small diameter opening terminating at one of its ends in a thin web of the plug material. The plug has a valve cover with an inner surface spaced closely apart from said end face portion, thereby defining a pair of transverse openings. A normally closed valve such as a slit in the web allows pressure and vacuum to vent through the valve.