by Peter |
Last Updated: January 3, 2023 Looking for the best coolant sealant? Hey, we have got something for you here!.
In Hurry? Checkout Our Top Pick Of Best Coolant Sealant.
Our Top Pick
9.7/10 our score
Best Coolant Sealant
| Rank | Product Name | Score |
|---|---|---|
|
1
|
Permatex 59214 High Temperature Thread Sealant, 6 ml Tube, Pack of 1
|
9. 7
|
|
2
|
Permatex 22071 Water Pump and Thermostat RTV Silicone Gasket, 0.5 oz., 0.5 Ounce , blue
|
9. 5
|
|
3
|
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair , BLUE
|
9. 1
|
|
4
|
Bar's Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz , Gray
|
8. 8
|
|
5
|
ACDelco GM Original Equipment 10-108 Cooling System Sealing Tabs - 4 g (Pack of 5)
|
8. 6
|
|
6
|
K-Seal ST5516 HD Multi Purpose One Step Permanent Coolant Leak Repair
|
8. 2
|
|
7
|
Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair
|
8. 0
|
|
8
|
Bar's Leaks Radiator Stop Leak 2X Concentrate, 6 oz.
|
7 .7
|
|
9
|
K&W 401224 FiberLock Head Gasket & Block Repair - 32 Fl Oz
|
7. 4
|
|
10
|
Bar's Leaks High Mileage Cooling System Repair, 16.9 oz
|
7. 2
|
1. Permatex 59214 High Temperature Thread Sealant, 6 ml Tube, Pack of 1
1
9.7/10 our score
Features
- Locks and seals threaded fittings
- Resists leakage, vibration loosening, moisture, hydraulic fluids and diesel fuels
- Lubricates threads for easy assembly and disassembly
- Parts may be repositioned up to 4 hours after application
- Suggested Applications: head bolts into through holes, oil PSI sending units and sensors, oil and coolant lines, fuel fittings, rear axle fill plug, brake and power steering fittings
2. Permatex 22071 Water Pump and Thermostat RTV Silicone Gasket, 0.5 oz., 0.5 Ounce , blue
2
9.5/10 our score
Features
- Sensor-safe, noncorrosive RTV silicone gasket material formulated specifically for water pumps and thermostat housings.Fit Type: Universal Fit
- Highest water-glycol resistance available in an RTV silicone
- Superior adhesion and flexibility, can be used as a gasket maker or dressing
- Temperature Range: -65°F to 500°F (-54°C to 260°C) intermittent
- Suggested Applications: Water pump and thermostat housings
3. K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair , BLUE
3
9.1/10 our score
Features
- 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
4. Bar's Leaks 1186 Liquid Aluminum Stop Leak - 16.9 oz , Gray
4
8.8/10 our score
Features
- Bar's Leaks Liquid Aluminum Stop Leak seals radiator leaks. Seals freeze plug leaks. Repairs gasket leaks and heater core leaks. Lowers water temperature.
- Seals radiator leaks
- Seals freeze plug leaks
- Repairs gasket leaks
- Special Shipping Information: This item cannot be returned and has additional shipping restrictions
5. ACDelco GM Original Equipment 10-108 Cooling System Sealing Tabs - 4 g (Pack of 5)
5
8.6/10 our score
Features
- Engineered for use on a variety of engine components - effective on: oil pan, ladder frame, front and rear covers, t-joints, manifold corners, intake, manifold end seals, and cam covers
- Designed for quick and easy application, assembly may be filled with oil or coolant immediately after applying sealant and torqueing the bolts
- High viscosity product that cures when exposed to air
6. K-Seal ST5516 HD Multi Purpose One Step Permanent Coolant Leak Repair
6
8.2/10 our score
Features
- 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
7. Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair
7
8/10 our score
Features
- Repairs Blown Head And Intake Gasket Leaks
- Seals Cracked Cylinder Heads And Blocks
- Stops Heater Core And Radiator Leaks
- Fixes Leaking Freeze And Core Plugs
8. Bar's Leaks Radiator Stop Leak 2X Concentrate, 6 oz.
8
7.7/10 our score
Features
- 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 and/or water. One bottle treats systems
- package weight :0.81lbs Works with all types and colors of antifreeze That’s why we created the Bar’s 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
9. K&W 401224 FiberLock Head Gasket & Block Repair - 32 Fl Oz
9
7.4/10 our score
Features
- Repairs head gaskets, engine blocks intake gaskets, cylinder heads, freeze plugs, heater cores and coolant leaks on cars, trucks, and buses
- All metal parts, most plastics, and painted surfaces.
10. Bar's Leaks High Mileage Cooling System Repair, 16.9 oz
10
7.2/10 our score
Features
- Stops Cooling System Leaks
- Compatible with all brands of anti-freeze including conventional green or blue and extended life red/orange or yellow (OAT/HOAT) coolant
- Premium Carbon Fiber Formulation For Extended Protection
- Country Of Manufacture: United States