Finding the best silicone sealant suitable for your needs isnt easy. With hundreds of choices can distract you. Knowing whats bad and whats good can be something of a minefield. In this article, weve done the hard work for you.
Reviews
1. Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube
Feature
Sensor-safe, non-corrosive formula designed for superior adhesion to oily surfaces and long term durabilitySuperior resistance to powertrain fluids including engine oil, transmission fluid, gear lube and coolants
Retains high flexibility and eliminates the need for pre-formed, pre-cut, paper, rubber or cork gaskets; OEM specified and approved for dealership warranty requirements
Temperature Range -65F to 500F (-54C to 260C) intermittent
Suggested Applications: Valve covers, oil pans, intake manifold end seals, timing covers, and differential covers
Description
Permatex Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker is a fast-curing, sensor safe, low odor, non-corrosive formula that retains high flexibility, and oil resistance properties through use of a patented adhesion system. This gasket maker meets performance specs of OE silicone gaskets and is OEM specified. For dealership warranty requirements it also ensures extended drivetrain warranty compliance. Temperature range -65 degrees fahrenheit to 500 degrees fahrenheit intermittent; resists auto and shop fluids and vibration. These gasket makers offer significant performance advantages, excellent torque retention and hi-temp, sensor-safe properties. Extended warranties, engine sensors and new component materials such as aluminum, bi-metal alloys and high-tech plastics, have created the need for superior RTV silicone gasket makers in both OEM production and service applications. Permatex always has the right gasket maker for your application.2. Gorilla 100% Silicone Sealant, 2.8 oz., Clear
Feature
Incredibly versatile 100% silicone sealant that dries translucent clearBest 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
Description
Gorilla 100% Silicone Sealant, 2.8 oz., Clear3. Newborn 930-GTD Drip-Free Smooth Hex Rod Cradle Caulking Gun with Gator Trigger Comfort Grip, 1/10 Gallon Cartridge, 10:1 Thrust Ratio
Feature
Steel half-barrel (also called cradle) frame caulking gun for 1/10-gal. cartridgesThrust ratio of 10:1 for use with low viscosity materials
Smooth pressure rod requires less force and is quieter than a ratchet-style pressure rod
Rod retracts after each pull of the trigger to help prevent dripping
Handle and trigger are padded for comfort
Professional-grade 1/10-gallon drip-free caulk gun
Thermoplastic comfort grip
Professional drip-free hex rod
Includes ladder hook
All-steel, welded construction
Description
The Newborn 930-GTD Drip-Free Smooth Hex Rod Cradle caulking gun has a steel half-barrel frame that fits 1/10-gal. cartridges and has a 10:1 thrust ratio for use with low viscosity materials such as latex. The smooth pressure rod requires less force and is quieter than a ratchet-style pressure rod. The rod retracts after each pull of the trigger, removing pressure from the tube to help prevent dripping. The handle and trigger are padded for comfort. There is a welded plate in the back for securing the cartridge in place. A seal puncture tool and a spout cutter are built into the side of gun for opening cartridges without a knife, and the hook on the back allows it to hang on a ladder.
Caulking guns, also called caulk or cartridge guns, dispense a controlled flow of products such as caulk, sealants, and adhesives from a tube or cartridge. A manual caulking gun consists of a frame which holds the tube, a trigger, and a rod which moves forward when the trigger is depressed, dispensing the product. Manual caulking guns have a thrust ratio; the higher the thrust ratio, the easier it is to dispense the caulk, sealant, or adhesive. Air-powered or pneumatic caulking guns also have a frame and a trigger, but are used with an air pressure regulator that pushes the product from the tube using air pressure instead of a rod.
Newborn Brothers Company, Inc. manufactures sealant and adhesive dispensers and accessories. The company was founded in 1974 and is headquartered in Jessup, MD.
4. Permatex 80050 Clear RTV Silicone Adhesive Sealant, 3 oz
Feature
General purpose, clear RTV indoor/outdoor sealantSeals, bonds, repairs, mends and secures glass, metal, plastics, fabric, vinyl, weather stripping and vinyl tops
Waterproof, durable, and flexible; resists water, weather, and vibration
Temperature Range: -75F to 400F (-59C to 204C)
Suggested Applications: Door frames, vinyl tops, seams and roofs; not recommended for engine gasket, windshield installation, or electrical connection applications
Description
General-purpose, clear RTV indoor/outdoor sealant. Seals, bonds, repairs, mends, and secures glass, metal, plastics, fabric, vinyl, weather stripping, and vinyl tops. May be applied to horizontal or vertical surfaces. Waterproof and flexible. Temperature range -75F to 400F (-59C to 204C), resists water, weather, and vibration. Not recommended for windshield installation.5. Dap 18285 Dynaflex 230 Premium Indoor Outdoor Sealant with 5.5-Ounce Tube, White
Feature
This product is highly durableThe product is manufactured in United States
The product is easy to use
Provides a permanently flexible, crack-proof seal that is ideal for sealing out water and air leaks to improve the energy efficiency of a home
Also seals out insects from entering through small gaps and cracks
Cured sealant is mold and mildew resistant
Ideal for a wide variety of applications such as sealing around widows, doors, siding, trim, molding and baseboards
Exceeds Federal Specification TT-S-00230C, Type II, Class A and ASTM Specification C920, Class 25
Description
Dap's most advanced indoor/outdoor premium latex sealant technology is both waterproof and paintable. It combines outstanding durability, adhesion and flexibility with easy tooling, paintability, low odor and easy water clean up.6. Clear Waterproof Silicone Sealant - 9.8-Ounce Cartridge - Pack of 2
Feature
Protect and seal with 100% silicone rubberWaterproof, weatherproof, won't crack, crumble or dry out
Cured sealant is mildew resistant
Meets ASTM C920, Specification C719, Class 25
Pack of two
Description
Superior quality tub and tile sealant. Offers long-lasting flexibility and excellent adhesion. Provides a watertight seal around non-porous surfaces, such as ceramic tile and plumbing fixtures. Can be used indoors or outdoors. Safe for incidental food contact. Cured sealant is mildew resistant. Price listed is for (2) 9.8 Ounce Cartridges of Clear 100% Silicone Sealant by DAP.7. 3M 08019 Marine Grade Silicone Sealant, 3 oz, Clear
Feature
3M Marine Grade Silicone Sealant is a high quality silicone designed for the harsh marine environment.Mildew-resistant, non-yellowing seal
Remains flexible even after years of exposure
Has been designed for the harsh marine environment
Description
3M Marine Grade Silicone Sealant is a high quality silicone designed for the harsh marine environment. It forms a mildew-resistant, non-yellowing seal that remains flexible even after years of exposure.8. Dap 08641 Clear Silicone Sealant 9.8-Ounce
Feature
Protect and seal with 100% silicone rubberWaterproof, weatherproof, won't crack, crumble or dry out
Cured sealant is mildew resistant
Can be used indoors or outdoors
Meets ASTM C920, Specification C719, Class 25
Description
Dap Inc. 10.3-oz. Cartridge, clear, silicone sealant. Protect and seal with 100% silicone rubber. Waterproof, weatherproof, won't crack, crumble or dry out.9. General Electric GE360 Kitchen and Bath Silicone I Caulk, 2.8-Ounce, Clear
Feature
Permanently waterproof100% Silicone
Typical Uses: Showers, tubs, sinks, tile, countertops and fixtures
Adheres to: Most ceramic tile, laminate, porcelain, glass, metal, plastic, granite and wood
Meets federal specifications: TT-S-00230C; TT-S-001543A/ASTM C-920, Type-S, NS Class 25, use NT, M, G, A & O test requirements