Permatex 81158 Black Silicone Adhesive Sealant 3 oz RTV Waterproof Weatherproof For Sale

The Permatex 81158 Black Silicone Adhesive Sealant is a premium, general-purpose indoor/outdoor RTV compound formulated to create highly reliable, long-lasting bonds. This sensor-safe formula effectively seals, mends, repairs, and secures a massive variety of materials, including glass, metal, plastics, fabrics, vinyl, and automotive weather stripping. Designed to adapt effortlessly to both horizontal and vertical application surfaces without running, it provides a tough, flexible barrier that guards against moisture entry and acts as an excellent insulator for exposed electrical wiring. Capable of handling demanding environmental extremes, it forms a permanently waterproof seal that continuously shrugs off heavy vibration, weathering, grease, water, and engine oil.

• Sensor-Safe Formula: Safely engineered for automotive and general-purpose applications without triggering sensitive electronic engine sensors.

• Extreme Thermal Defense: Formulated to retain its rubberized flexibility across a broad temperature span of -75°F up to 450°F.

• High Chemical & Fluid Resistance: Actively resists degradation from continuous exposure to water, weather elements, structural vibration, oil, and grease.

• No-Sag Physical Consistency: Thick industrial compound stays exactly where applied on vertical surfaces during initial setup curing phases.

• Automotive: Windshields, door frames, vinyl tops, weather stripping body seals, and firewall wiring pass-through ports.

• Home & Marine: Sealing exterior vents, window seams, minor plastic panel tears, and waterproofing electrical junction data-path-to-node="14">

• Chemical Base: Oxime Silicone RTV

• Cure Time Profile: Tacks in 1 hour; full structural cure occurs at 24 hours

• Visual Appearance: Solid Black Paste

• Packaging Status: Open Box / Factory Sealed Inner Blister Tube

• Weight: 0.2 lbs