AIRTIGHT SEALING & WATERPROOFING: Our putty butyl tape is easy to install, easy to form, quick to form, shock absorbing, no mess, airtight, waterproof, high viscosity and elastic. Creates a vapour barrier for gaps and cracks to keep unwanted water in or out. GREAT AUTO PARTNER, SOUND DEADENING: Butyl tape is easy to lap over joints, thickness 1/8" (Approx. 3mm), to fill up the gap between the windshield and plastic panel, reduce the noise and wind when driving at high speed. A Must for Every RV’s/Autos/Boats Toolbox FOR MULTI SURFACES, EASY TO MOLD: Our butyl window sealant conforms well to uneven, irregular shapes and tight spaces, will stick to jagged or smooth edges on fiberglass, rubber, galvanized metal, aluminum, plastic, wood and glass or as an EDPM tape. Use as an alternative to metal roofing tape or rv roof tape sealant. UPGRADE PACKING: We use box packaging and set a fixed slot in the centre of the box to ensure the tape stays in place during transport, prevent serious deformation during transportation, resulting in the flattening of the product resulting in changes in width and thickness. WIDELY APPLICATION: Not only is the Butyl Rubber perfect for RV window sealing, but it is also widely used for window & door waterproofing, marine repair, house roof repair & plumbing, windshield, RV, retrofit, pipe, joint sealing, mobile home, glass, EPDM roof or galvanised metal roof patching for indoor and outdoor use.