J-B Weld Ultimate Grey Gasket Maker & Sealant is an RTV (Room Temperature Vulcanized) Silicone gasketing material designed for use in mechanical assemblies where higher torque or closely spaced bolt profiles can lead to higher loads and cause gasket and sealing failures for average silicones.
J-B Weld White Silicone Sealant & Adhesive is a general purpose Sealant Adhesive RTV (Room Temperature Vulcanized) Silicone designed for use in household or mechanical assembly applications.
