Top 10 Best Radiator Sealers

of November 2024
1
Best ChoiceBest Choice
XFasten Self-fusing Silicone Tape Pro, Blue, 1.5-Inch x 15-Feet, 30mils Extreme
XFasten
XFasten
10
Exceptional
View on Amazon
2
Best ValueBest Value
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair
K-Seal
K-Seal
9.9
Exceptional
View on Amazon
3
Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.
Bar's Leaks
Bar's Leaks
9.8
Exceptional
View on Amazon
4
BlueDevil 00205 Radiator & Block Sealer - 16 Ounce
BlueDevil Products
BlueDevil Products
9.7
Exceptional
View on Amazon
5
AlumAseal ASLC16 Radiator Stop Leak and Conditioner Liquid - 16 Fl oz.
Alumaseal
Alumaseal
9.6
Exceptional
View on Amazon
6
K-Seal ST5516 HD Multi Purpose One Step Permanent Coolant Leak Repair
K-Seal
K-Seal
9.5
Excellent
View on Amazon
7
Bar's Leaks Radiator Stop Leak 2X Concentrate, 6 oz.
Bar's Leaks
Bar's Leaks
9.4
Excellent
View on Amazon
8
Prestone AS145 Stop Leak Repair for Radiators, Heater Cores, and Hoses, 11 oz,
Prestone
Prestone
9.3
Excellent
View on Amazon
9
Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams, Brown
Bar's Leaks
Bar's Leaks
9.2
Excellent
View on Amazon
10
Irontite All Weather Seal, Blue, 16 oz
Irontite
Irontite
9.1
Excellent
View on Amazon
11
Super Glue Pro Seal N62020 Instant Gas Tank and Radiator Repair
Super Glue
Super Glue
9.0
Excellent
View on Amazon

About Radiator Sealers

Click here to learn more about these products.

XFasten Self-fusing Silicone Tape Pro, Blue, 1.5-Inch x 15-Feet, 30mils Extreme Silicone Pipe Fix Tape for Leak Drain Pipes, Tool Grip, Electrical Tape | High Heat Plumbing Tape for Radiator Hose

IDEAL FOR QUICK EMERGENCY REPAIRS. Our Self-Fusing Silicone Tape PRO is made from 100 Silicone that wraps around itself without the need of any adhesive, providing instant airtight and waterproof sealing to leaky hoses, pipes, electrical wiring, outdoor coax, wiring harnesses, and other fittings and connections. This stretch and seal tape is a must-have for plumbing, leak repair, and car or boat repair kits.. WATERPROOF AND AIRTIGHT SEAL. Thanks to our PVC Pipe Leak Tape's 30mil thickness, it can withstand pressures of up to 910psi 6.27MPa and stretch up to 4x its original length without the risk of breaking. This silicone plumbing tape prevents moisture and vapor from permeating through pipes and drains.. PERFECT AS A BLUE SILICONE ELECTRICAL TAPE. This Silicone self-fusing electrical tape insulates up to 950 voltsmil and dissipates the heat generated to resist melting, weathering, and tearing. The XFasten Self-vulcanizing tape is also waterproof, making it ideal for both indoor and outdoor applications.. NO MESSY CLEANUP. The XFasten Thick Silicone Tape for Plumbing is made from pure silicone and is non-reactive and non-adhesive. It fuses to itself, is residue-free, does not leave a sticky residue, and does not react chemically to potable water or any fluids, regardless of chemical composition or pH. This Water Leak Wrap Tape is safe to use on pipes and storage tanks. HEAT AND CORROSION-PROOF. This High Heat Resistant Silicone tape resists salt, oil, and harsh chemicals against corrosion. You can use our waterproof plumbing repair tape for indoor and outdoor applications because it can withstand temperatures up to -94F to 572F.. SUPER ELASTIC. You can stretch our water and food-safe silicone plumber tape up to 4x its length when applying it to activate it. In addition, looping our PVC Leak Tape three to four times around the pipe provides pressure sealing of up to 910psi, ensuring superior water and airtight sealing performance for high-pressure pipe leakages.. MULTIPLE-USE. Did you know that our extreme water-safe silicone tape isn't just limited to as a drain pipe tape You can use the XFasten Silicone Grip Tape for many applications such as pipe insulation, radiator hose repair tape, transformer insulation, patch a vacuum hose, tool handle wrap, and other general repairs.. FUSES AND BONDS FAST. The total curing time for our plumbing tape for leaks is one minute, after which it fuses and bonds to itself permanently, delivering watertight sealing. For this reason, it can also be used as an outdoor coax cable repair tape to protect it against harsh outdoor conditions such as wind, dust, moisture, UV, heat, and rain.. WIDE COMPATIBILITY. May it be textured, rusted, brushed, polished or grainy surfaces- our PVC Pipe Repair Tape can deliver maximum protection against harsh elements.The XFasten waterproof self-bonding silicone tape for plumbing can be used on any surface that is cylindrical or any surface where the tape can wrap around itself.. DESIGNED TO TAKE A BEATING. We created our Blue Silicone Plumbers' Heat and Leak Tape to develop its tensile strength the more you stretch it, thus preventing it from breaking or puncturing against extreme temperature and pressure. This is why it works great for outdoor repairs as a self-sealing silicone tape and self-bonding tape for high-pressure pipe leaks.

K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair

Permanent Coolant Leak Repair - Just Shake, Pour And Go.Fit Type Universal. Mixes With All Antifreeze. No Draining Or Flushing. Fixes Cracks And Leaks In Radiator, Head Gasket, Freeze Plugs, Cylinder Heads, Heater Core, Water Pump Casing And Engine Blocks.

Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.

Seals larger leaks seals. Repairs heater core leaks. Repairs freeze plug leaks. Repairs blown head gaskets. Repairs blocks.

BlueDevil 00205 Radiator & Block Sealer - 16 Ounce

Permanent repair for radiator and block leaks.. Works effectively on plastic, aluminum andor metal radiators. Contains no solids or fibrous materials.. Safe and Easy to use.. Guaranteed.

AlumAseal ASLC16 Radiator Stop Leak and Conditioner Liquid - 16 Fl oz.

Stops leaks safely, quickly and easily. Compatible with all antifreeze and coolants. Safe and effective for all metal, plastic and rubber cooling system parts. Lubricates water pump. Guaranteed to work.

K-Seal ST5516 HD Multi Purpose One Step Permanent Coolant Leak Repair

Permanent coolant leak repair - Just shake, pour and go. Mixes with all antifreeze. No draining or flushing. Fixes cracks and leaks in radiator, head gasket, freeze plugs, cylinder heads, heater core, water pump casing and engine blocks. If product did not seal head gasket leak, the system might be Over-pressurized, which causes back pressure and doesn't allow the product to reach the problem area, on this page below under Technical Specification is a PDF Guide with instructions to follow to complete the repair successfully.

Bar's Leaks Radiator Stop Leak 2X Concentrate, 6 oz.

Product type Auto Accessory Stops and seals coolant leaks. Package dimensions 4.064 cm L x6.096 cm W x12.446 cm H It has double the power of most other stop leak products and saves. country of origin United States coolant andor water. One bottle treats systems. package weight 0.81lbs Works with all types and colors of antifreeze Thats why we created the Bars Leaks Radiator Stop Leak 2X Concentrate.. Seals Leaks in Radiators, Gaskets, Heater Core Freeze P lugs Works with all types and colors of antifreeze coolant.

Prestone AS145 Stop Leak Repair for Radiators, Heater Cores, and Hoses, 11 oz, 1 Pack

Patented formula quickly stops leaks in radiators, water pumps, and heater cores. Boosts corrosion inhibitors to protect against pitting and corrosion, which cause radiator leaks. Combination of natural and synthetic components provides the ability to seal leaks up to 0.020 x 0.5. Seals even large leaks without interfering with the flow through the radiator or heater core. Stops the leak as well as the corrosive condition that causes it.

Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams, Brown

Seals leaks. Conditions cooling system. Inhibits rust and corrosion. Lubricates water pump seals. Helps control electrolysis.

Irontite All Weather Seal, Blue, 16 oz

Pour and Go - into your existing coolant mixture. Stays dissolved and suspended now and long into the future.. Stops Leaks in Radiators, Head Gaskets, Cylinder Heads, and Engine Blocks. Works in Gas or Diesel Engines. Works in Aluminium and Cast Iron Blocks and on hoses and any other kind of material..

Super Glue Pro Seal N62020 Instant Gas Tank and Radiator Repair

Instant Gas Tank and Radiator Repair. 0.7-Ounce strip. Easy to use putty. Permanently seals cracks and split seams. Hardens like steel.
Disclaimer