Best Loctite Gasket Sealers in 2026

Lock and Seal Fasteners: Prevents loosening of metal fasteners caused by vibration on small motors, mowers, and power equipment

Prevents Rust and Corrosion: Protects from leaks, rusting, and corrosion and eliminates need to stock up on expensive lock nuts and washers

Removable: Can be removed with hand tools

Size: 50 ml

Color: Blue

Characteristic odor

Resists leakage

vibration loosening

moisture

Country Of Origin: United States

Model Number: HL135275

Item Package Dimension: 6.0" L x 3.0" W x 1.0" H

DESIGN USE. Noncorrosive anaerobic designed primarily for use on aluminum, iron and steel flanged mating surfaces.

PREMIUM. Ideal for on-the-spot and emergency repairs, or when a conventional gasket is out of stock.

FILLS & SEALS. Fills gaps up to 0.050" (1.27 mm) and forms a flexible, solvent-resistant seal that will not tear or decay.

OEM SPECIFIED. Our LOCTITE automotive aftermarket products are not just OEM-specified, they are also designed by auto manufacturers and lab tested. Wherever engines are being built or repaired, LOCTITE is trusted by professionals.

RELIABLE ADHESION. Forms a flexible, solvent-resistant seal that will not tear or decay. Primarily for use on aluminum, iron & steel flanged mating surfaces.

FLEXIBLE. Enhances load bearing & shock absorbing characteristics of the bond area. Typically used for Water pumps, thermostat housings, transmission pans, transmission case covers, transaxle casings, O-ring replacement. Replaces almost any cut gasket or coat pre-cut gaskets to increase reliability.

OEM SPECIFIED. Our LOCTITE automotive aftermarket products are not just OEM-specified, they are also designed by auto manufacturers and lab tested. Wherever engines are being built or repaired, LOCTITE is trusted by professionals.

RRELIABLE ADHESION. Sensor Safe, low odor, non-corrosive, Fast-curing.

FLEXIBLE. High-quality construction and durability.

RELIABLE ADHESION. Works on all metals, including passive substrates (e.g. stainless steel, aluminum, plated surfaces) & tolerates minor contamination by oils (e.g. motor oils, corrosion protection oils, cutting fluids). Will not loosen under stress.

WON'T DRIP, LEAK OR MELT. Even in high temperatures, Loctite self-feeding glue sticks keep their integrity making them perfect for difficult overhead applications. Recommended temperature range is -65° to 300°F (-54°C to 149°C).

REMOVABLE WITH HAND TOOLS. Well suited for automotive and other applications where maintenance or servicing is required such as Valve covers, fuel pumps, carburetors, manifold gaskets and more.

RTV Silicone 5699 High Performance Grey Gasket Maker, 80 ml. tube (37464)

The package length is 21.6 centimeters

The package height is 3.2 centimeters

Henkel Loctite 515 Gasket Eliminator is a high viscosity, flexible sealant for use on rigid machined flanges. It provides resistance to low pressures immediately after assembly of flanges.

Loctite

Package Dimensions: 3.8 L x 4.4 H x 3.6 W (inches)

Package Weight : 1.28 pounds

Country of Origin : United States

OEM SPECIFIED. Our LOCTITE automotive aftermarket products are not just OEM-specified, they are also designed by auto manufacturers and lab tested. Wherever engines are being built or repaired, LOCTITE is trusted by professionals.

RELIABLE ADHESION. Sensor-safe, low odor, non-corrosive, low volatility, non-conductive.

FLEXIBLE. High-quality construction and durability.

Blowout resistant

Non-corrosive

Low odor, low volatility

Approvals: Canadian Food Inspection Agency (CFIA)

Sale Unit: TUBE

Country of Origin: United States

Package quantity: 1

Product type: Adhesives_And_Sealants

RELIABLE ADHESION. This high temp silicone sealant works on all metals, including passive substrates (e.g. stainless steel, aluminum, plated surfaces). Resists cracking, shrinking & migrating.

FLEXES WITH MOVEMENT. Enhances load bearing & shock absorbing characteristics of the bond area. Eliminates the need for preformed, paper, rubber & cork gaskets.

EXCELLENT OIL RESISTANCE. Tolerates contamination by oils (e.g. motor oils, corrosion protection oils, cutting fluids).

RELIABLE ADHESION. This high temp silicone sealant works on all metals, including passive substrates (e.g. stainless steel, aluminum, plated surfaces). Resists cracking, shrinking & migrating.

FLEXES WITH MOVEMENT. Enhances load bearing & shock absorbing characteristics of the bond area. Eliminates the need for preformed, paper, rubber & cork gaskets.

INCREASED OIL RESISTANCE. Tolerates contamination by oils (e.g. motor oils, corrosion protection oils, cutting fluids).

Sold as 1 Each.

Type: Gasket Maker.

Capacity: 10.1 Oz.

RELIABLE SEALING. Gasket Sealant for Flanges with Vibration or Pressure.

FLEXIBLE. Solvent and temperature-resistant seal.

FORM-IN-PLACE. Formula that cures to a tough solvent resistant gasket that flexes with flange movement.

Excellent resistance to automotive motor oils

Enhances load bearing & shock absorbing characteristics of the bond area

Typical applications include oil pans, transmission pans, valve covers, valves and guides, timing gear covers, and differential covers

Loctite

Package Dimensions: 23.368 H x 5.08 L x 5.08 W (centimetres)

Package Weight: 0.498 kilograms

Country of Origin : United States

OEM SPECIFIED. Our LOCTITE automotive aftermarket products are not just OEM-specified, they are also designed by auto manufacturers and lab tested. Wherever engines are being built or repaired, LOCTITE is trusted by professionals.

RELIABLE ADHESION. This high temp silicone sealant works on all metals, including passive substrates (e.g. stainless steel, aluminum, plated surfaces). Resists cracking, shrinking & migrating.

FLEXIBLE. Enhances load bearing & shock absorbing characteristics of the bond area. Eliminates the need for preformed, paper, rubber & cork gaskets.

HEAD GASKET SEALER: Fix it with Green Demon! Safe for all engines from bikes to trucks. Just shake and pour the gasket liquid sealant into the radiator cap to permanently seal and repair the leak. Green Demon magic takes effect in just a few minutes!

JUST ONE APPLICATION REPAIR: No engine flushing or draining required. A super strength ceramic formula flows through the cooling system to reach damaged areas. Particles combine creating a mesh that cures and repairs leaks to form a permanent sealed bond.

FIX PERMANENTLY: Find coolant puddles? Get Green Demon in your vehicle to avoid costly repairs. Green Demon fixes head gasket failures from coolant to cylinder/cylinder to coolant leaks, blown head gaskets and coolant to oil leaks (in certain situations).