Best Radiator Sealers - Buying Guide
Last Updated: 05/27/2024
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K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required
Asin: B001QT9KO6 | Model: ST5501 | PartNumber: ST5501 | Ean: 0812646010004, 5060002968017, 7262318311480 | UPC: 812646010004
Features
- Permanent Coolant Leak Repair: K-Seal s unique formula will seek out holes and cracks, and permanently seal them, with no adverse impact on the efficiency of your engine cooling.
- Versatile Usage: Fixes cracks and leaks in the radiator, head gasket, freeze plugs, cylinder heads, heater core, water pump casing and engine blocks
- Universal Solution: This coolant stop leak is universally applicable. It can be used with all types of antifreeze, making K-Seal an essential tool for any vehicle owner
- No Draining or Flushing: K-Seal coolant leak repair is easy to use. It eliminates the need for draining or flushing, making it a convenient solution. Just shake, pour and go.
- Effective Cooling: The K-Seal 8 fluid ounce bottle is effective up to 20 quarts of cooling capacity
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Universal Solution: This Coolant Stop Leak Is Universally Applicable. It Can Be Used With All Types Of Antifreeze, Making K-Seal An Essential Tool For Any Vehicle Owner.
Effective Cooling: The K-Seal 8 Fluid Ounce Bottle Is Effective Up To 20 Quarts Of Cooling Capacity.
No Draining Or Flushing: K-Seal Coolant Leak Repair Is Easy To Use. It Eliminates The Need For Draining Or Flushing, Making It A Convenient Solution. Just Shake, Pour And Go..
Versatile Usage: Fixes Cracks And Leaks In The Radiator, Head Gasket, Freeze Plugs, Cylinder Heads, Heater Core, Water Pump Casing And Engine Blocks.
Brand: K-Seal | Manufacturer: Solv-Tec
Dimensions: 6.00 x 7.87 x 2.00 inches | Weight: 0.60 Pounds
Warranty: When K-Seal makes a repair we guarantee it will be permanent
See On Amazon #2
Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams, Brown
Asin: B000KKND3Q | Model: HDC | PartNumber: HDC | Ean: 7258006523747, 7262318464667, 0046087000069 | UPC: 046087000069
Features
- Seals leaks
- Conditions cooling system
- Inhibits rust and corrosion
- Lubricates water pump seals
- Helps control electrolysis
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Inhibits Rust And Corrosion.
Helps Control Electrolysis.
Lubricates Water Pump Seals.
Conditions Cooling System.
First Available: 12/02/2011
Brand: Bar's Leaks | Manufacturer: Bar's Leaks
Dimensions: 0.80 x 7.50 x 5.00 inches | Weight: 0.10 Pounds
Warranty: Manufacturer Warranty
See On Amazon #3
Bar's Leaks 1109 Block Seal Liquid Copper Intake and Radiator Stop Leak - 18 oz.
Asin: B002PX91OG | Model: 1109 | PartNumber: 1109 | Ean: 0046087011096 | UPC: 046087011096
Features
- PERMANENTLY FIXES COOLING SYSTEM LEAKS: . One step formula permanently repairs coolant loss problems on cars, trucks, vans, SUV s and RV s.
- ANTIFREEZE COMPATIBLE - NO DRAINING REQUIRED: Antifreeze compatible sodium silicate liquid glass penetrates large and small leaks in plastic, aluminum and cast iron heads, blocks, intake manifold & gaskets, freeze plugs, heater cores and radiators.
- ONE STEP - POUR DIRECTLY INTO RADIATOR - EASY TO USE: Fiber additives lock together with liquid to increase strength and promote a permanent seal. It will not harm the coolingsystem when used properly, no draining is required.
- USE WITH ALL TYPES OF TRADITIONAL OR EXTENDED LIFE COOLANT: Use with ALL types of traditional or extended life coolant including yellow, orange, pink, red, blue, purple and green silicate based & non-silicate based (OAT/HOAT) 50-50 mix antifreeze, and/or water.
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One Step - Pour Directly Into Radiator - Easy To Use: Fiber Additives Lock Together With Liquid To Increase Strength And Promote A Permanent Seal. It Will Not Harm The Coolingsystem When Used Properly, No Draining Is Required..
Use With All Types Of Traditional Or Extended Life Coolant: Use With All Types Of Traditional Or Extended Life Coolant Including Yellow, Orange, Pink, Red, Blue, Purple And Green Silicate Based & Non-Silicate Based (Oat/Hoat) 50-50 Mix Antifreeze, And/Or Water..
Antifreeze Compatible - No Draining Required: Antifreeze Compatible Sodium Silicate Liquid Glass Penetrates Large And Small Leaks In Plastic, Aluminum And Cast Iron Heads, Blocks, Intake Manifold & Gaskets, Freeze Plugs, Heater Cores And Radiators..
Brand: Bar's Leaks | Manufacturer: Bar's Leaks
Dimensions: 2.60 x 7.50 x 2.60 inches | Weight: 1.13 Pounds
See On Amazon #4
Bar's Leaks Radiator Stop Leak, 11 oz
Asin: B0CLB9NGG3 | Model: 1199 | PartNumber: 1199 | Ean: 0046087011997 | UPC: 046087011997
Features
- DISSOLVED PELLETIZED FORMULA: Bar s Leaks Radiator Stop Leak seals internal, external and coolant-to-oil leaks. It is specially formulated to seal larger leaks better than other stop leak products.
- STOPS CURRENT AND FUTURE LEAKS: Works safely and effectively on plastic, aluminum and metal radiators, heater cores, blocks, heads, gaskets and freeze plugs.
- INHIBITS RUST AND CORROSION: Water Pump Lube lubricates water pump seal and inhibits the formation of rust and scale.
- WORKS WITH ALL TYPES AND COLORS OF ANTIFREEZE COOLANT AND / OR WATER: Compatible with both conventional silicate-based and extended life (OAT/HOAT) antifreeze, all types and colors. Can also be used in straight water.
- Bar s Leaks Radiator Stop Leak seals internal, external and coolant-to-oil leaks. It is specially formulated to seal larger leaks better than other stop leak products.
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Inhibits Rust And Corrosion: Water Pump Lube Lubricates Water Pump Seal And Inhibits The Formation Of Rust And Scale..
Bar’S Leaks Radiator Stop Leak Seals Internal, External And Coolant-To-Oil Leaks. It Is Specially Formulated To Seal Larger Leaks Better Than Other Stop Leak Products..
Works With All Types And Colors Of Antifreeze Coolant And / Or Water: Compatible With Both Conventional Silicate-Based And Extended Life (Oat/Hoat) Antifreeze, All Types And Colors. Can Also Be Used In Straight Water..
Stops Current And Future Leaks: Works Safely And Effectively On Plastic, Aluminum And Metal Radiators, Heater Cores, Blocks, Heads, Gaskets And Freeze Plugs..
Brand: Bar's Leaks | Manufacturer: Bar's Products
Warranty: See manufacturer
See On Amazon #5
J-B Weld 2120 Radiator Repair Kit
Asin: B01IOPE66G | Model: 2120 | PartNumber: 2120 | Ean: 0043425021205 | UPC: 043425021205
Features
- RADIATORWELD: Our radiator and plastic tank repair kit has all you need for making professional quality, permanent repairs with state of the art components and easy to follow instructions.
- COUNT ON US: For more than 40 years, our products have earned a loyal following from people who take pride in their work. With each product we innovate, we continue to provide the world's strongest bond for your projects.
- SIMPLE TO USE: No removal of tank or radiator is required to stop leaks. Easily fix holes up to 3/8 diam. or cracks up to 4 long. Includes epoxy putty, fiberglass cloth, sandpaper, and applicator.
- VERSATILE & DEPENDABLE: Great for radiators, washer fluid tanks, storage tanks, water tanks, plastics, composites, PVC and more. Professionals, mechanics and avid DIYers know J-B gets the job done.
- NO PROJECT TOO BIG OR TOO SMALL: We have all the products you need to get the job done right. JB Weld always delivers the legendary performance of the World's Strongest Bond.
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Simple To Use: No Removal Of Tank Or Radiator Is Required To Stop Leaks. Easily Fix Holes Up To 3/8" Diam. Or Cracks Up To 4" Long. Includes Epoxy Putty, Fiberglass Cloth, Sandpaper, And Applicator..
No Project Too Big Or Too Small: We Have All The Products You Need To Get The Job Done Right. Jb Weld Always Delivers The Legendary Performance Of The World's Strongest Bond..
Versatile & Dependable: Great For Radiators, Washer Fluid Tanks, Storage Tanks, Water Tanks, Plastics, Composites, Pvc And More. Professionals, Mechanics And Avid Diyers Know J-B Gets The Job Done..
Count On Us: For More Than 40 Years, Our Products Have Earned A Loyal Following From People Who Take Pride In Their Work. With Each Product We Innovate, We Continue To Provide The World's Strongest Bond For Your Projects..
First Available: 07/18/2016
Brand: J-B Weld | Manufacturer: JBWeld
Dimensions: 8.00 x 2.00 x 4.00 inches | Weight: 0.11 pounds
Warranty: As Labelled
See On Amazon #6
Bar's Leaks 1100 Head Gasket Repair - 20 oz.
Asin: B000OO04MQ | Model: 1100 | PartNumber: 1100 | Ean: 0046087011003 | UPC: 046087011003
Features
- Stops block leaks
- Seals cracked cylinder heads and blocks
- Repairs blown head gaskets
- Dual Action 2 Part Formula LIQUID CERAMIC: Liquid penetrates large and small leaks to form a seal actually harder than the original head gasket REINFORCED FIBERS: Fiber additives lock together with liquid to increase strength and promote a permanent seal
- Head Gasket Sealant is NOT COMPATIBLE with antifreeze and must only be added to the cooling system after ALL ANTIFREEZE has been flushed and removed.
- Included components: Unit, Instruction Guide
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Repairs Blown Head Gaskets.
Head Gasket Sealant Is Not Compatible With Antifreeze And Must Only Be Added To The Cooling System After All Antifreeze Has Been Flushed And Removed..
Included Components: Unit, Instruction Guide.
Dual Action 2 Part Formula — Liquid Ceramic: Liquid Penetrates Large And Small Leaks To Form A Seal Actually Harder Than The Original Head Gasket — Reinforced Fibers: Fiber Additives Lock Together With Liquid To Increase Strength And Promote A Permanent Seal.
Seals Cracked Cylinder Heads And Blocks.
First Available: 12/02/2011
Brand: Bar's Leaks | Manufacturer: Bar's Leaks
Dimensions: 8.30 x 1.80 x 3.40 inches | Weight: 1.41 Pounds
Warranty: 1 year manufacturer
See On Amazon #7
AM WORLDWIDE Radiator Repair Premium Gasket Tape (Cork and Rubber Compound) (1/16" x 1.25" x 100' or 1.59mm x 31.73 mm x 30.4 MTS) - Seal for Radiator Repairs and Versatile Applications
Asin: B01DMBOWVQ | Model: 235-21 | PartNumber: 235-21
Features
- High-Quality Seal: Our PREMIUM GASKET TAPE FOR RADIATOR guarantees an exceptional seal, thanks to its premium cork and rubber compound construction.
- Versatile Application: Covering a broader range of applications, this gasket tape is perfect for various radiator repair need.
- Durable and Reliable: With its memory retention feature, the tape maintains its effectiveness over time, maintains its shape and performance even under heavy loads, providing long-lasting sealing solutions.
- Why Choose Us: 12 Months Warranty! At a fabulous 1 RETURN FOR 10,000 SELLS ratio, we are dedicated to making our customers happy! Our products are top-notch and always meet or surpass OEM standards.
- AM Worldwide Brand: As a trusted brand in the market for over 70 years, AM Worldwide specializes in Automotive Replacement Engine Radiators, distributing and selling high-quality radiators, plastic tanks, oil coolers, intercoolers, tools, and supplies. If you have any question pls feel free to ask
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►Durable And Reliable: With Its Memory Retention Feature, The Tape Maintains Its Effectiveness Over Time, Maintains Its Shape And Performance Even Under Heavy Loads, Providing Long-Lasting Sealing Solutions..
►Am Worldwide Brand: As A Trusted Brand In The Market For Over 70 Years, Am Worldwide Specializes In Automotive Replacement Engine Radiators, Distributing And Selling High-Quality Radiators, Plastic Tanks, Oil Coolers, Intercoolers, Tools, And Supplies. If You Have Any Question Pls Feel Free To Ask.
►Why Choose Us: 12 Months Warranty! At A Fabulous 1 Return For 10,000 Sells Ratio, We Are Dedicated To Making Our Customers Happy! Our Products Are Top-Notch And Always Meet Or Surpass Oem Standards..
►Versatile Application: Covering A Broader Range Of Applications, This Gasket Tape Is Perfect For Various Radiator Repair Need..
Brand: AM WORLDWIDE | Manufacturer: JOHNSON
Warranty: 15 DAYS
See On Amazon #8
AM Worldwide Stic-Tite Aluminum Radiator Repair Tool - SticTite Radiator Repair for Leaks and Damage - Durable, Heat-Resistant, All Radiator Types - 1 PIECE, 54
Asin: B0891WSZ4P | Model: Stic-Tite 1 | PartNumber: Stic-Tite 1
Features
- Fixes leaks and damage quickly and effectively with our easy-to-use aluminum radiator repair kit
- Save time and money by repairing your radiator instead of replacing it with our affordable and cost-effective solution
- Compatible with all types of radiators, including aluminum, copper, and plastic tanks
- Our high-quality, durable aluminum components ensure a long-lasting repair and prevent future leaks
- Ideal for cars, trucks, motorcycles, and other vehicles with radiator leaks or damage
- Don't let a radiator leak slow you down - trust the AM Worldwide Stic-tite Aluminum Radiator Repair Kit to get you back on the road quickly and affordably.
- MADE IN USA
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⭐ Compatible With All Types Of Radiators, Including Aluminum, Copper, And Plastic Tanks.
⭐ Made In Usa⭐.
⭐ Ideal For Cars, Trucks, Motorcycles, And Other Vehicles With Radiator Leaks Or Damage.
⭐ Don't Let A Radiator Leak Slow You Down - Trust The Am Worldwide Stic-Tite Aluminum Radiator Repair Kit To Get You Back On The Road Quickly And Affordably..
⭐ Our High-Quality, Durable Aluminum Components Ensure A Long-Lasting Repair And Prevent Future Leaks.
⭐ Save Time And Money By Repairing Your Radiator Instead Of Replacing It With Our Affordable And Cost-Effective Solution.
Brand: AM WORLDWIDE | Manufacturer: Barbee Co.
Warranty: 30 days
See On Amazon #9
K-Seal ST5516 Heavy-Duty Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required
Asin: B002BJEG3U | Model: ST5516HD | PartNumber: ST5516HD | Ean: 0812646010066 | UPC: 812646010066
Features
- Permanent Coolant Leak Repair: K-Seal s unique formula will seek out holes and cracks, and permanently seal them, with no adverse impact on the efficiency of your engine cooling.
- Versatile Usage: Fixes cracks and leaks in the radiator, head gasket, freeze plugs, cylinder heads, heater core, water pump casing and engine blocks
- Heavy-Duty Universal Solution: This coolant stop leak was designed specifically for HGVs, tractors, heavy plant and other commercial vehicles. It can be used with all types of antifreeze
- No Draining or Flushing: K-Seal coolant leak repair is easy to use. It eliminates the need for draining or flushing, making it a convenient solution. Just shake, pour and go.
- Effective Cooling: The K-Seal 16 fluid ounce bottle is effective up to 40 quarts of cooling capacity
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Heavy-Duty Universal Solution: This Coolant Stop Leak Was Designed Specifically For Hgvs, Tractors, Heavy Plant And Other Commercial Vehicles. It Can Be Used With All Types Of Antifreeze.
Effective Cooling: The K-Seal 16 Fluid Ounce Bottle Is Effective Up To 40 Quarts Of Cooling Capacity.
No Draining Or Flushing: K-Seal Coolant Leak Repair Is Easy To Use. It Eliminates The Need For Draining Or Flushing, Making It A Convenient Solution. Just Shake, Pour And Go..
Versatile Usage: Fixes Cracks And Leaks In The Radiator, Head Gasket, Freeze Plugs, Cylinder Heads, Heater Core, Water Pump Casing And Engine Blocks.
Brand: K-Seal | Manufacturer: Solv-Tec
Dimensions: 1.90 x 5.90 x 4.10 inches | Weight: 1.19 pounds
See On Amazon #10
CRC K&W 401016 Block Seal Permanent Metallic Block & Radiator Seal - 16 Oz
Asin: B000CIPV5E | Model: 401016 | PartNumber: 401016 | Ean: 0078372010163 | UPC: 078372010163
Features
- Permanent molecular seal that s as strong as steel
- Seals cracks & holes in cast iron and aluminum engine blocks, head gaskets, freeze plugs, and copper, aluminum and bi-material radiators & heater cores
- For use in all water-cooled diesel and gasoline vehicles
- Withstands extreme pressure and temperatures of a cooling system and will not wash away
- Professional grade formula exceeds ASTM D6107 for effectively sealing leaks in cooling systems
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For Use In All Water-Cooled Diesel And Gasoline Vehicles.
Professional Grade Formula Exceeds Astm D6107 For Effectively Sealing Leaks In Cooling Systems.
Withstands Extreme Pressure And Temperatures Of A Cooling System And Will Not Wash Away.
Seals Cracks & Holes In Cast Iron And Aluminum Engine Blocks, Head Gaskets, Freeze Plugs, And Copper, Aluminum And Bi-Material Radiators & Heater Cores.
First Available: 02/08/2018
Brand: CRC | Manufacturer: CRC
Dimensions: 2.13 x 5.87 x 2.31 Inches | Weight: 1.15 pounds
Warranty: limited warranty
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