Top 9 RTV Silicone High Temp Clear – Gasket Sealers

As an Amazon Associate I earn from qualifying purchases.

1. J-B Weld

#ad

J-B Weld 31314 High Temperature RTV Silicone Gasket Maker and Sealant, 3 oz., Red

#ad
J-B Weld #ad - With each product we innovate, we continue to provide the world's strongest bond for your projects. Count on us: for more than 40 years, our products have earned a loyal following from people who take pride in their work.

Hi temp red silicone gasket maker & sealant: is an rtv room temperature Vulcanized Silicone gasketing material, designed for use in mechanical assemblies where the existence of higher, continuous temperatures up to 550º F or 650º F intermittent might exist. Jb weld delivers the legendary performance of the World's Strongest Bond. Easy to use: curing when the product is exposed to the moisture in air, it forms a tough, waterproof seal on most surfaces.

Versatile & dependable: ideal for automotive, timing covers, differential covers, oil pans, exhaust manifolds, metal, water pumps, drive housings and oven doors. Our heavy duty adhesives repair & restore it right the first time. It will not shrink or crack, resists weathering and is sensor safe. Do it yourself: big or small, you can diy it with j-b.
BrandJ-B Weld #ad
ManufacturerJBWeld #ad
Height6.3 Inches
Length1.97 Inches
Weight0.2 Pounds
Width1.57 Inches
Part Number31314
Model31314
WarrantyNo Warranty

2. Loctite

#ad

Loctite 37464 Grey RTV 598 High Performance Silicone. 80 ml.

#ad
Loctite #ad - Tube 37464. The package height is 3. 2 centimeters. The package width is 104 centimeters. The package length is 21. 6 centimeters. Rtv silicone 5699 high performance Grey Gasket Maker, 80 ml.
BrandLoctite #ad
ManufacturerLoctite #ad
Height1 Inches
Length8 Inches
Weight0.3 Pounds
Width4 Inches
Part NumberLOC491982
ModelLOC491982

3. Permatex

#ad

3 oz, Permatex 81160 High-Temp Red RTV Silicone Gasket

#ad
Permatex #ad - Replaces almost any cut gasket, And Coats Pre-Cut Gaskets To Increase Reliability. Formulated for hi-temp Applications, Or Heavy-Duty Use. Temperature range of -65F To 650F Intermittent. Makes reliable 'formed-in-place' Gaskets That Resist Cracking, Shrinking And Migrating.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.25 Inches
Weight0.2 Pounds
Width3.81 Inches
Part Number81160
Model81160
WarrantyManufacturer Warranty

4. Loctite

#ad

Loctite 37467 Black RTV 598 High Performance Silicone. 80 ml.

#ad
Loctite #ad - Package weight : 0310009 pounds. Color : Black. Package dimensions : 8. 0 l x 1. 45 h x 3. 81 w inches. Made in China.
BrandLoctite #ad
ManufacturerLoctite #ad
Height1 Inches
Length8 Inches
Weight0.25 Pounds
Width4 Inches
Part NumberLOC491985
ModelLOC491985

5. Realth

#ad

Silicone Gasket Maker High Temperature RTV 3.53 Oz Ultra Black Oil Resistance Sealant High Strength Flange Sealing for Automotive Motorbike Machine Equipment RepairingSG119

#ad
Realth #ad - Applying occasion: ideal for automotive, exhaust manifolds, oil pans, timing covers, motorbike, machine equipment, oil pans, thermostat housing, valve covers, drive housings, water pumps, differential covers, mechanical assemblies, all kinds of metal, 3D printer and oven doors. Also it works on glass, wooden object and anywhere need to seal.

Definitely a different odor but maybe that has something to do with its superior performance. Safe, endure temperatures up to -60º C ~ 280º C. Better than traditional glues and epoxies. All-powerful: this silicone gasket maker can work on all metal, aluminum, such as stainless steel, brass even it is plated or contaminated by minor oils. Perfect for oil-resistant gaskets on motorcycle, various electrical applications as an insulator with high temperature bond strength and other miscellaneous application. It will form a tough and waterproof seal between tiny gap when the product is exposed to the moisture in air.

Wonderful performance: this rtv room temperature vulcanized silicone gasket maker is more oil resistant than conventional silicone, low odor and non-corrosive with superior adhesion, more flexible than cut gaskets. How it works: clean the surface of gasket or o-ring, drip, leak and crack, coat our sealant on the gasket and put it where it is. They will set completely after 24H and be disassembling. Heavy duty: our rtv silicone is great for working on many tasks.
BrandRealth #ad
ManufacturerRealth #ad
Height1.18 Inches
Length7.48 Inches
Width3.54 Inches
Part NumberSG119

6. J-B Weld

#ad

10.3 oz., J-B Weld 31914 Red High Temperature RTV Silicone Gasket Maker and Sealant

#ad
J-B Weld #ad - Do it yourself: big or small, you can diy it with j-b. Hi temp silicone gasket maker & sealant: is an rtv silicone gasketing material, designed for use in mechanical assemblies where continuous temperatures up to 550º F or 650º F intermittent exist.

Our heavy duty adhesives repair & restore it right the first time. Jb weld delivers the legendary performance of the World's Strongest Bond. What the professionals use: builders, mechanics & repair pros know our products bond strong to a variety of surfaces in even the toughest environments. It will not shrink or crack, it forms a tough, resists weathering and is sensor safe.

Versatile & dependable: ideal for automotive, differential covers, oil pans, timing covers, metal, exhaust manifolds, water pumps, drive housings and oven doors. Easy to use: curing when the product is exposed to the moisture in air, waterproof seal on most surfaces. Choose the product pros trust for your project.
BrandJ-B Weld #ad
ManufacturerJBWeld #ad
Height5 Inches
Length11 Inches
Weight0.64 Pounds
Width9 Inches
Part Number31914
Model31914

7. Akfix

#ad

RTV Gasket Maker, Waterproof Seam&Gasket Sealer for Automotive, 100% Silicone Flexible Gap Filler | 1-Pack, High Heat Silicone Sealant, 10.5 Oz. Red, Akfix HT300 High Temp Silicone Sealant

#ad
Akfix #ad - Will not crack, shrink or become brittle. Our 100% silicone mastic joint sealant is a gap filler used on waterproof sealing and bonding in stoves, motors, gaskets in pumps, chimneys, automobiles and where parts must perform at high temperatures and heat.

Akfix ht300 is a very powerful, long-lasting adhesive that can endure exposure to high temperatures and is heat resistant silicone. With rtv silicone gasket maker, extreme weather, you can count on waterproof performance in most conditions. High temperature silicone is a flexible sealer and long-lasting adhesive that dries slowly, making it a preferred option for both DIYers and experts.

This gasket sealant resists mechanical enforcement after curing. Excellent heat resistance after curing up to 482°F permanently and up to 572°F temporarily. This silicone caulk is virtually unaffected by chemical deterioration, temperature or aging.
BrandAkfix #ad
ManufacturerAkfix #ad
Height9.05 Inches
Length1.96 Inches
Weight0.82 Pounds
Width1.96 Inches
Part NumberAkfix HT300-1-Pack
ModelAkfix HT300-1 Pack

8. Henkel

#ad

Henkel 908570 2.7 oz Tub Clear Silicone Waterproof Sealant, Single Tube

#ad
Henkel #ad - Aquarium safe. 7 oz. Bonds abs, fiberglass, glass, stainless steel, granite, cultured marble, ceramic, wood, aluminum, porcelain, vinyl tile, some rubbers and plastics. No cracking, peeling or shrinking. Use for sealing or repairing door frames, weather-stripping, outside of fireplace doors, gaskets, toys, windows, vents, appliances, shoes and boots.2.
BrandHenkel #ad
ManufacturerLoctite #ad
Height8 Inches
Length1.25 Inches
Weight0.24 Pounds
Width3.81 Inches
Part Number908570
Model908570

9. Permatex

#ad

Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, Sensor Safe And Non-Corrosive, For High Flex And Oil Resistant Applications 3.35oz Tube

#ad
Permatex #ad - Long-lasting and durable - ultra black resists aging, weathering and thermal cycling Without Hardening, Shrinking Or Cracking. With a temperature range of -65°f to 500°f -54°c To 260°c Intermittent.

Superior resistance - powertrain fluids including engine oil, Transmission Fluid, Gear Lube And Coolants To Keep Your Application Locked In Place To Create A Strong Long Lasting Seal. Suggested applications: valve covers and valve guides, Transmission Pans, Intake Manifold End Seals, Timing Gear Covers, Oil Pans, And Differential Covers. Non-corrosive formula - ultra black maximum oil resistance silicone Gasket Maker Is Sensor-safe; With A Non-Corrosive Formula Designed For Superior Adhesion To Oily Surfaces And Long Term Durability.

High flexibility - ultra black silicone gasket maker retains high flexibility And Oil Resistant Properties And Can Be Used To Replace Pre Cut Gaskets Or Be Used As A Gasket Maker Or Gasket Sealant.
BrandPermatex #ad
ManufacturerPermatex #ad
Height8 Inches
Length1.38 Inches
Weight0.1 Pounds
Width3.81 Inches
Part Number82180
Model82180
WarrantyManufacturer