CRC K&W 401016 Block Seal Permanent Metallic™ Block & Radiator Seal - 16 Oz
Highlighted Features
- Permanent molecular seal that’s as strong as
- Seals cracks & holes in cast iron and aluminum engine blocks, head gaskets, freeze plugs, and copper, aluminum and bi-material radiators & heater
- For use in all water-cooled diesel and gasoline
- Withstands extreme pressure and temperatures of a cooling system and will not wash
- Professional grade formula exceeds ASTM D6107 for effectively sealing leaks in cooling
Features
Information
- Best Choice - #1 Best Cracked Engine Block Sealer
- Checked on 06/05/2024
- Based on 85 Reviews
K&W 401224 FiberLock Head Gasket & Block Repair - 32 Fl Oz
Highlighted Features
- Easy Pour and Go Formula!
- Permanently fixes head gaskets, engine blocks, cooling systems, and cylinder
- "Contains 3 unique technologies. Military-Strength Fibers create multi-layer repair over cracks with a web-like weave. Nanotechnology permanently fixes the smallest cracks and crevices. Cool-X Conditioner – lowers operating temperature as
- Seals larger holes with less fluid loss than competitive products as proven by lab test (ASTM
- Works with all antifreeze or plain
Features
Information
- Best Choice - #2 Best Cracked Engine Block Sealer
- Checked on 06/05/2024
- Based on 93 Reviews
Bar's Leak HG-1 HEAD SEAL Blown Head Gasket Repair
Highlighted Features
- Repairs Blown Head And Intake Gasket
- Seals Cracked Cylinder Heads And
- Stops Heater Core And Radiator
- Fixes Leaking Freeze And Core
Features
Information
- Best Choice - #3 Best Cracked Engine Block Sealer
- Checked on 06/05/2024
- Based on 88 Reviews
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair, Blue
Highlighted Features
- Permanent Coolant Leak Repair - Just Shake, Pour And
- 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
Features
Information
- Best Choice - #4 Best Cracked Engine Block Sealer
- Checked on 06/05/2024
- Based on 21 Reviews
Bar's Leaks Block Seal Head Gasket Fix
Highlighted Features
- Stops block leaks
- Seals cracked cylinder heads and
- Repairs blown head gaskets
- Contains a combination of antifreeze compatible sodium silicate sealing liquid and various size gasket sealing particles which penetrate gaps & cracks and harden to permanently stop
Features
Information
- Best Choice - #5 Best Cracked Engine Block Sealer
- Checked on 06/05/2024
- Based on 55 Reviews
K-Seal ST3501 Pour and Go Permanent Head Gasket and Block Repair
Highlighted Features
- Just Pour & Go – No Need for Expensive Head Gasket Repairs - The Safe and Easy Way to Fix a Coolant
- Fixes blown head gaskets, cracked heads and
- A permanent repair, guaranteed for the lifetime of the
- Scientifically Tested - K-Seal is the only product to have been successfully tested by the equipment at Brighton University and classes as meeting the demands of ASTM
- 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
Features
Information
- Best Choice - #6 Best Cracked Engine Block Sealer
- Checked on 06/05/2024
- Based on 31 Reviews
BlueDevil Radiator & Block Sealer
Highlighted Features
- Permanent repair for radiator and block
- Works effectively on plastic, aluminum and/or metal
- Contains no solids or fibrous
- Safe and Easy to use.
- Guaranteed
Features
Information
- Best Choice - #7 Best Cracked Engine Block Sealer
- Checked on 06/05/2024
- Based on 45 Reviews
K&W 401232 Permanent Head Gasket & Block Repair with Nanotechnology - 32 Fl Oz
Highlighted Features
- Package length: 4.394 cm
- Package width: 8.610 cm
- Package height: 24.206 cm
- Product Type: AUTO ACCESSORY
Features
Information
- Best Choice - #8 Best Cracked Engine Block Sealer
- Checked on 06/05/2024
- Based on 89 Reviews
Rain Guard Water Sealers - Concrete Sealer - Penetrating Water Repellent Protection For All Porous Concrete Surfaces - Water-Based Silane/Siloxane Sealant - Natural Finish - Ready To Use - 1 Gallon
Highlighted Features
- PREMIUM CONCRETE SEALER: Protect, restore, and extend the life of your home with Rainguard Water Sealers Concrete Sealer! Formulated to penetrate deep into the surface, Concrete Sealer is a water-based
- LONG LASTING PROTECTION: Engineered with Micro-Lok! This proprietary ingredient ensures sealer absorption and creates a long-lasting filmless hydrophobic barrier against weathering, salt, dirt, freezing temperatures, UV light, wind-driven rain, and
- PREMIXED FORMULATION: Ready to use right out of the bottle! Rainguard Water Sealers Concrete Sealer is premixed for easy and convenient application. Before use, shake bottle lightly to disperse any
- EASY APPLICATION: Seamlessly seal cement surfaces! Prior to applying Rainguard Concrete Sealer, protect anything you don't want to be sealed by moving or covering with a tarp. Prep surface by
- RAIN GUARD: Where innovation meets sustainability! Since 1969, Rainguard Water Sealers has been manufacturing architectural and industrial coatings designed to “wrap” the exterior of buildings and structures. Rainguard now brings
Features
Information
- Best Choice - #9 Best Cracked Engine Block Sealer
- Checked on 06/05/2024
- Based on 17 Reviews
Moroso 35500 Ceramic Engine Seal - 1 Pint
Highlighted Features
- Fit type: Vehicle Specific
- The best Chemical Sealer you can buy to stop cooling system leaks Works equally well in aluminum or cast-iron blocks Cooling system must be thoroughly clean before use Does not
- Part number: 35500
- Package Weight: 1.6 pounds
Features
Information
- Best Choice - #10 Best Cracked Engine Block Sealer
- Checked on 06/05/2024
- Based on 36 Reviews