Abstract: A cap and plug for use in sealing the end of a pipe or tube is provided which comprises a tubular member comprised of a resilient material having an open end and a closed end, and having a sidewall extending therebetween, the sidewall having an interior surface having an inwardly-directed ridge extending circumferentially along a centrally-disposed portion of said interior surface of said sidewall, the closed end comprising a centrally-positioned hollow dome portion defined by an inwardly-extending open-ended annular recess, said annular recess defining a sidewall spaced from said interior surface of said sidewall of the tubular member whereby said annular recess is formed therebetween, said sidewall defined by said annular recess containing at least one groove extending along the longitudinal extent of said sidewall from an upper portion of said sidewall toward a lowermost portion of said sidewall, and said sidewall defined by said annular recess being spaced from said interior surface of said sidewall of sa

Abstract: A protective sleeve for use in connection with valve stems for gas bottles is provided, the protective sleeve being comprised of an elongated body of such length as to extend along at least a portion of the length of the valve stem. A projection extends from an interior surface of the protective sleeve and is adapted to physically engage with an orifice in an opposing surface of the valve stem in locking engagement whereby the protective sleeve is prevented from being easily removed from the valve stem upon being placed thereover due to engagement of the projection with the orifice. At least one tear strip is provided within at least a portion of at least one side surface of the protective sleeve, whereby at least a portion of the side surface of the protective sleeve may be removed by tearing the tear strip so as to permit disengagement and removal of the protective sleeve from the valve stem.

Abstract: A venting cap assembly is secured to a specific part of a component for masking the specific part. The cap assembly includes a closed first end, an open second end and a sidewall extending between the closed first end and the open second end forming an interior cavity for the specific part. At least one vent track extends along the sidewall within the cavity. The at least one vent track terminates at a pressure reservoir. A sealing and venting assembly periodically relieves air pressure within the pressure reservoir when an excessive amount of air pressure develops.