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10 bestCoolant Sealantof February 2025

112M consumers helped this year.

10% off

1

EPAuto Spill Proof Radiator Coolant Filling Funnel Kit
EPAuto Spill Proof Radiator Coolant Filling Funnel Kit

EPAUTO

9.7

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2

K-SEAL Coolant Leak Repair, ST9501 472ml Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, Freeze Plug - Pour and Go - Designed for Canadian Market
K-SEAL Coolant Leak Repair, ST9501 472ml Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, Freeze Plug - Pour and Go - Designed for Canadian Market

K-Seal

9.4

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3

Permatex 59103 Clear RTV Silicone Adhesive Sealant 66BR, 80mL
Permatex 59103 Clear RTV Silicone Adhesive Sealant 66BR, 80mL

Permatex

9.2

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4

Liquid Rubber RV Lap Sealant, White, 4 Pack
Liquid Rubber RV Lap Sealant, White, 4 Pack

Liquid Rubber

8.9

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5

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

K-Seal

8.6

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Related productsUp to 13% off

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

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

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Permatex 59214 High Temperature Thread Sealant, 6 ml Tube

Permatex 59214 High Temperature Thread Sealant, 6 ml Tube

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Permatex 22071 Water Pump and Thermostat RTV Silicone Gasket, 0.5 oz.

Permatex 22071 Water Pump and Thermostat RTV Silicone Gasket, 0.5 oz.

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FrostyCool R134a and R12 Replacement A/C Refrigerant Deluxe Recharge Mobile Sealer and Stop Leak Kit

FrostyCool R134a and R12 Replacement A/C Refrigerant Deluxe Recharge Mobile Sealer and Stop Leak Kit

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6

SIKA - High-Performance elastomeric Polyurethane sealant - Sikaflex 1A - Limestone - Multi-Purpose - Seal and Weatherproof Joints - One-Component - 300 mL
SIKA - High-Performance elastomeric Polyurethane sealant - Sikaflex 1A - Limestone - Multi-Purpose - Seal and Weatherproof Joints - One-Component - 300 mL

SIKA

8.3

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7

Irontite All Weather Seal, Blue, 16 oz (468-9130-16)
Irontite All Weather Seal, Blue, 16 oz (468-9130-16)

Irontite

8.0

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8

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

Bar's Leaks

7.7

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9

SILCA Ultimate Tubeless Tire Sealant W/FIBERFOAM | Long Lasting, Fast Sealing Bike Tire Sealant | Tubeless Sealant - MTB, Road, Gravel Bicycle Tires | Tire Sealant Bicycle (32oz Sealant with Carbon)
SILCA Ultimate Tubeless Tire Sealant W/FIBERFOAM | Long Lasting, Fast Sealing Bike Tire Sealant | Tubeless Sealant - MTB, Road, Gravel Bicycle Tires | Tire Sealant Bicycle (32oz Sealant with Carbon)

SILCA

7.4

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46% off

10

170g RTV Silicone Gasket Maker, Black Silicone Sealant Shockproof and Leakproof, High Temperature Resistant, RTV Sealant Can be Used in Engines, Transmissions, Superchargers and All Types of Gaskets
170g RTV Silicone Gasket Maker, Black Silicone Sealant Shockproof and Leakproof, High Temperature Resistant, RTV Sealant Can be Used in Engines, Transmissions, Superchargers and All Types of Gaskets

EIGTWEN

7.2

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