This is a genuine Campingaz replacement washer (seal), used between a Campingaz appliance and its gas cartridge or connector to keep the joint gas-tight. Seals harden, crack or go missing over time, and a worn washer can cause gas leaks or a poor flame, so replacing it is a quick, cheap fix that keeps a stove, lantern or braai safe to use. Check the old washer's size and the appliance model before ordering, and always check for leaks with soapy water, away from flames, after fitting a new seal. We could not confirm which appliances this exact washer fits from the information available.