Multipurpose Gasket Kit. It includes one 1-Gang, one round and four lampholder gaskets. It is made of 1/8 in. thick polyethylene foam and 1/16 in. thick velbuna (lampholder gasket only). The 1-Gang gasket has cut outs for a toggle switch, duplex receptacle, GFCI and 1.406 in. diameter round receptacle. It is used for weatherproof box, cover and lampholder.