Description
J-B Weld White RTV Silicone is a powerful, all-purpose sealant trusted by professionals and DIYers alike. This 3 oz tube of high-performance silicone is designed to bond and seal a variety of surfaces, including metal, glass, ceramic, wood, and plastic. Whether you’re repairing a leaky window, sealing a bathroom fixture, or tackling an auto project, this product provides durable, waterproof performance in indoor and outdoor conditions.
🔧 Key Features
✅ All-Purpose Use
J-B Weld White RTV Silicone is versatile and dependable. Whether you’re sealing around windows, repairing a bathtub, or insulating electrical boxes, this 3 oz tube delivers a long-lasting seal.
✅ Waterproof & Weather-Resistant
Once cured, this silicone becomes 100% waterproof and resistant to weather, UV exposure, and moisture. It’s ideal for both indoor and outdoor applications, ensuring your repairs stand the test of time.
✅ Flexible & Durable
This product cures into a flexible yet strong bond, allowing for thermal expansion and contraction. It won’t crack, shrink, or break under pressure—perfect for high-movement areas like window frames and pipes.
🔩 Ideal For:
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Glass-to-metal bonds (e.g., mirrors, windows)
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Bathroom caulking (e.g., tubs, tiles, sinks)
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Automotive sealing (e.g., headlights, gaskets)
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Electrical insulation
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Kitchen surfaces (non-food contact areas)
🕒 Fast Curing & Easy Application
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Tack-free time: ~1 hour
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Full cure: 24 hours
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Application: Apply directly from the tube and smooth with a tool or finger
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Cleanup: Remove uncured material with a damp cloth; cured material must be scraped
📐 Technical Specs:
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Color: White
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Size: 3 oz (85 g) tube
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Temp Range: -65°F to 500°F (-54°C to 260°C)
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VOC Compliant
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Shelf Life: 12 months (unopened)
🧰 How to Use:
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Clean the surface of all oils, dust, and debris
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Cut the tip of the nozzle to the desired bead size
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Apply a continuous bead to the desired area
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Tool/smooth within 5-10 minutes
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Let cure for 24 hours before exposing to water
⭐ Customer Testimonials:
“I sealed a leaky RV window with this and it’s been rock solid ever since.” – ★★★★★
“Easy to use, excellent adhesion, and stayed white after curing!” – ★★★★★
💡 Pro Tips:
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Not recommended for direct food contact or aquariums
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Always apply in well-ventilated areas
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Test stain or paint compatibility on a small surface first
🔗 Internal Link:
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🌐 External Link:
See full product specs on the official J-B Weld website.
Thanks to its reliable performance, J-B Weld White RTV Silicone is a top choice for both home repairs and professional projects. Use it to seal leaks around sinks, showers, or windows. It’s also a great fit for DIY projects like crafting custom terrariums (non-aquatic), building weatherproof outdoor decor, or sealing electronics enclosures.
In the automotive world, it’s commonly used for valve covers, water pumps, thermostat housings, and tail lights. The sealant’s ability to withstand temperatures up to 500°F makes it perfect for high-heat environments under the hood.
🌎 Built for Real-World Conditions
Whether you live in a humid, rainy climate or deal with dry, dusty weather, J-B Weld White RTV Silicone is designed to hold up under environmental stress. It resists cracking, UV rays, and aging, so your repairs don’t just last—they remain virtually invisible over time.
🛡️ Trust the J-B Weld Legacy
J-B Weld has built a reputation for industrial-grade adhesives and sealants that outperform expectations. With over 50 years of experience, the brand is trusted by mechanics, contractors, and homeowners alike. When you choose J-B Weld, you’re choosing a product that’s been tested in the toughest conditions.
