10 Best Silicone Sealant of August 2025

• Food Contact Safe 350F high temp
• Impervious to all weather conditions
• Bonds to most surfaces
• Excellent for sealing or creating gaskets
• Self curing, easy to app

Silco

• 100% WEATHERPROOF: This 100% silicone formula offers excellent protection from water damage, providing a reliable seal in areas prone to consistent weather and water exposure
• 10-YEAR MOLD-FREE PRODUCT PROTECTION: Protects against stain-causing mold and mildew water damage
• 40% MORE FLEXIBILITY & 5X STRONGER ADHESION: Stays permanently flexible with strong adhesion and provides a durable seal for exterior and interior projects
• 30-MINUTE RAIN-READY: Ready for rain exposure in as little as 30 minutes
• SHRINK & CRACK-PROOF: Withstands extreme expansion or contraction associated with temperature fluctuations
• FREEZE & SUN-PROOF: Resists freezing temperatures and UV degradation for a permanently flexible seal
• WON’T BLEMISH METALS: Will not discolor most high-end metal finishes like chrome, bronze and nickel
• BACKED BY A LIFETIME GUARANTEE: Get high-quality results, guaranteed for as long as you own your home
• NON-PAINTABLE: Designed for applications in which the seal or area will not be painted
• See product packaging images provided on this product page for complete performance and warranty information

GE Sealants & Adhesives

• 100% WATERPROOF: This 100% silicone formula offers ultimate protection from water damage, providing a reliable seal in areas prone to consistent water exposure
• 10-YEAR MOLD-FREE PRODUCT PROTECTION: Protects against stain-causing mold and mildew growth
• 40% MORE FLEXIBILITY & 5X STRONGER ADHESION: Stays permanently flexible with a high-performing, durable seal
• 30-MINUTE WATER-READY: Ready for water exposure in as little as 30 minutes
• SHRINK & CRACK-PROOF: Withstands extreme expansion and contraction associated with temperature fluctuations
• WON’T BLEMISH METALS: Will not discolor most high-end metal finishes like chrome, bronze and nickel
• LOW ODOR: Neutral-cure formula results in low odor while curing
• BACKED BY A LIFETIME GUARANTEE: Get high-quality results, guaranteed for as long as you own your home
• NON-PAINTABLE: Designed for applications in which the seal or area will not be painted
• See product packaging images provided on this product page for complete performance and warranty information

GE Sealants & Adhesives

• Sensor-safe, general purpose black RTV indoor/outdoor sealant
• Seals, bonds, repairs, mends and secures glass, metal, plastics, fabric, vinyl, weather stripping and vinyl tops
• Waterproof and flexible; resists water, weather, and vibration
• Temperature Range: -75°F to 450°F (-59°C to 232°C)
• Suggested Applications: Door frames, electrical connections, seams and roofs, vinyl tops, and weather stripping; protects and repairs electrical wiring
• Fit Type: Universal

Permatex

• 3-hour shower-ready
• 5-year mold-free product protection
• Typical uses: showers, tubs, sinks, tile, countertops and fixtures Adheres to: most ceramic tile, porcelain, glass, metal, plastic, granite and wood
• Adheres to: Most ceramic tile, laminate, porcelain, glass, metal, plastic, granite and wood
• Meets Federal Specifications: TT-S-001543A (COM-NBS), TT-S-00230 (COM-NBS), ASTM-C-920 TYPE S, NS, CLASS 25 USE NT, G A&O TEST REQUIREMENTS

Momentive Performance Materials

• Incredibly versatile 100% silicone sealant that dries translucent clear
• Best for sealing gaps or cracks between two surfaces; Works on window, door, kitchen, bath, gutters, auto, marine and more
• Indoor/outdoor; 100% Waterproof
• Won't Yellow, shrink or crack
• Mold and Mildew resistant

Gorilla

• 100% WATERPROOF: This 100% silicone formula offers ultimate protection from water damage, providing a reliable seal in areas prone to consistent water exposure
• 10-YEAR MOLD-FREE PRODUCT PROTECTION: Protects against stain-causing mold and mildew growth
• 40% MORE FLEXIBILITY & 5X STRONGER ADHESION: Stays permanently flexible with a high-performing, durable seal
• 30-MINUTE WATER-READY: Ready for water exposure in as little as 30 minutes
• SHRINK & CRACK-PROOF: Withstands extreme expansion and contraction associated with temperature fluctuations
• WON’T BLEMISH METALS: Will not discolor most high-end metal finishes like chrome, bronze and nickel
• LOW ODOR: Neutral-cure formula results in low odor while curing
• BACKED BY A LIFETIME GUARANTEE: Get high-quality results, guaranteed for as long as you own your home
• NON-PAINTABLE: Designed for applications in which the seal or area will not be painted
• See product packaging images provided on this product page for complete performance and warranty information

GE Sealants & Adhesives

• Incredibly versatile 100% silicone sealant that dries translucent clear
• Best for sealing gaps or cracks between two surfaces; works on window, door, kitchen, bath, gutters, auto, marine and more
• Indoor/outdoor; 100% waterproof
• Won't yellow, shrink or crack
• Mold and mildew resistant

Gorilla

• 100% WEATHERPROOF: This 100% silicone formula offers protection from water damage, providing a reliable seal in areas prone to weather and water exposure
• 7-YEAR MOLD-FREE PRODUCT PROTECTION: Protects against stain-causing mold and mildew growth
• EXCELLENT FLEXIBILITY & STRONG ADHESION: Provides a flexible, durable seal for both exterior and interior projects
• SAME-DAY RAIN-READY: Ready for rain exposure in as little as 12 hours
• FREEZE & SUN-PROOF: Resists freezing temperatures and UV degradation for a permanently flexible seal
• BACKED BY A LIFETIME GUARANTEE: Get high-quality results, guaranteed for as long as you own your home
• NON-PAINTABLE: Designed for applications in which the seal or areas will not be painted
• COMPATIBLE WITH MOST MATERIALS: Adheres to most metals and woods, aluminum, composites, brick, stone, stucco, masonry, cement board, glass, ceramic and porcelain tile, drywall, plaster, vinyl siding, PVC, fiberglass and painted surfaces
• See product packaging images provided on this product page for complete performance and warranty information

GE Sealants & Adhesives

• Use for sealing or repairing door frames, windows, vents, toys, appliances, gaskets, weather-stripping, outside of fireplace doors, shoes and boots
• Bonds ABS, glass, ceramic, porcelain, wood, aluminum, stainless steel, cultured marble, fiberglass, granite, vinyl tile, some rubbers and plastics
• Aquarium safe
• No cracking, peeling or shrinking
• 2. 7 oz.

Loctite