J-B Weld 31310 3oz Clear All Purpose RTV Silicone Sealant & Adhesive

J-B Weld 31310 3 oz Clear All-Purpose 100% RTV Silicone Sealant & Adhesive – World’s Strongest Bond

J-B Weld Clear Silicone (31310) is a 100% RTV (room-temperature vulcanized) silicone sealant and adhesive designed for reliable sealing and light-duty bonding in shops, homes, and vehicles. Exposed to moisture in the air, it cures to a flexible, waterproof seal that resists weathering, won’t shrink or crack, and stands up to daily movement and vibration. The clear finish blends with glass, tile, plastics, and painted surfaces, making it a good choice for visible joints and trim work. Because it’s sensor safe, it can be used around modern automotive oxygen sensors and electronics when sealing lights, housings, and interior panels. With a 1-hour set time, targeted jobs can be staged and handled the same day. Once cured, the seal holds up in wet areas and submerged conditions such as tubs, showers, and aquariums, and adheres to common materials including glass, fiberglass, PVC, wood, and tile.

For maintenance teams and DIY users alike, this general-purpose silicone is easy to apply straight from the squeeze tube and features dependable adhesion on mixed materials. Whether sealing a windshield trim edge, fixing a lens housing, or waterproofing a window or door frame, J-B Weld Clear Silicone provides a clean, durable seal without yellowing. Its flexible cure accommodates thermal expansion on metal, glass, and composite parts, reducing the chance of leaks over time. Made in the USA, the 3 oz size is convenient for tool bags, service trucks, and household repair kits.

J-B Weld 3oz Clear All Purpose RTV Silicone Sealant & Adhesive At a Glance

• 100% RTV Silicone: Cures to a flexible, waterproof seal for indoor and outdoor use.
• Clear Finish: Blends with glass, tile, and plastics for clean, low-visibility joints.
• Mold & Mildew Resistant: Helps keep bathrooms, kitchens, and damp areas cleaner.
• Sensor Safe: Suitable for automotive sealing near oxygen sensors and electronics.
• 1-Hour Set Time: Keeps projects moving with same-day handling.
• No-Shrink, No-Crack Formula: Maintains seal integrity through temperature changes.
• Bonds a Range of Materials: Works on plastic/composites/PVC, glass, fiberglass, wood, and tile.
• Wet & Underwater Service (after cure): Reliable for tubs, showers, and aquariums.

Markets

• Automotive Repair & Upfitters: Seals lens housings, trim, and interior panels without affecting sensors.
• Construction & Renovation: Weather-seals windows, doors, and finish trim on residential and light commercial jobs.
• Facility & Municipal Maintenance: Quick fixes on glazing, tile, and fixtures in public buildings.
• Marine & Aquariums: Waterproof sealing for hatches, lights, and aquariums after full cure.
• HVAC & Plumbing: Gasket-style sealing around housings, pans, and penetrations.
• Property Management & Homeowners: General repairs in kitchens, baths, and around windows.
• Trade Schools & Training Shops: Demonstrates proper use of a clear RTV silicone sealant.

Maintenance crews, installers, and automotive techs value a clear RTV silicone because it seals reliably on mixed materials and stays flexible after cure. J-B Weld Clear Silicone fits that need with a 1-hour set time to keep repair tickets moving and a mildew-resistant cure for wet areas. Glass shops and renovators appreciate how the clear color disappears on windows and door frames, while facility teams can use a single tube across glass, fiberglass, PVC, wood, and tile. For marine and aquarium work, the waterproof seal holds up after curing, helping prevent leaks in constant contact with water.

J-B Weld 31310 3oz Clear All Purpose RTV Silicone Sealant & Adhesive Features

• General-Purpose RTV: Designed for household and mechanical assembly sealing and light bonding.
• Waterproof After Cure: Forms a dependable seal for continuous water exposure.
• Mold/Mildew Resistance: Helps limit staining and odors in damp locations.
• Weather Resistant: Stands up to sunlight and temperature swings without shrinking or cracking.
• Sensor-Safe Formula: Appropriate around modern vehicle sensors and electronics.
• Adheres to Many Surfaces: Plastic/composite/PVC, glass, fiberglass, wood, and tile.
• Easy Application: Squeeze-tube delivery with controllable bead.
• Made in the USA: Consistent manufacturing quality.

J-B Weld 31310 3oz Clear All Purpose RTV Silicone Sealant & Adhesive Includes

• (1) 3 oz (85 g) tube of Clear All-Purpose RTV Silicone Sealant & Adhesive
• (1) Application nozzle/cap

J-B Weld 31310 3oz Clear All Purpose RTV Silicone Sealant & Adhesive Specifications

• Volume: 3 oz (85 g)
• Color (Cured): Clear
• Set Time: 1 hour
• Type: 100% RTV silicone, sensor safe
• Waterproof: Yes (after full cure)
• Recommended Materials: (7) Plastic/Composite/PVC, Glass, Fiberglass, Wood, Tile, Metal (non-porous), Painted Surfaces
• Typical Uses: (5+) Windshields/trim, windows, lens housings, door frames, tub & shower, aquariums
• Container Type: Squeeze tube
• Country of Origin: USA
• UPC: 043425313102

Why Customers Select the J-B Weld 3oz Clear All Purpose RTV Silicone Sealant & Adhesive

Installers choose this clear RTV silicone sealant because it delivers a reliable, waterproof seal on everyday materials without visible residue. On glazing and window repairs, the clear silicone blends in and stays flexible so joints don’t crack as frames shift. Automotive techs use the sensor-safe formula for sealing light housings and trim without risking oxygen sensor issues. In baths and kitchens, the mildew-resistant cure keeps tub and shower edges cleaner over time. For aquariums and other constant-water uses, a fully cured bead maintains a tight, long-term seal. With a quick 1-hour set time and simple squeeze-tube application, crews get consistent results across glass, PVC, fiberglass, wood, and tile—one tube that handles common sealing tasks in the shop and around the property.