Best Permatex Automotive Sealers in 2026

MULTI-USE: Perfect for use on metal buildings, trailer/RV roofs and sides, drain pans, drain pipes, boats, canoes. bonds to a wide range of surfaces including roof materials such as EPDM, TPO, Hypalon, aluminum, galvanized steel, wood, and fiberglass.

NO ADDITIONAL SEALING REQUIRED: Aluminum backing, combined with a layer of advanced MicroSealant, creates a waterproof, moisture, and air tight barrier with no additional sealing required that remains flexible to -57°C (-70°F)

DURABLE SURFACE: Industry leading one step repair system that creates a protective coating for surfaces that require abrasion and corrosion resistance

Non-Corrosive Formula - Ultra Black Maximum Oil Resistance Silicone Gasket Maker Is Sensor-safe; With A Non-Corrosive Formula Designed For Superior Adhesion To Oily Surfaces And Long Term Durability

Superior Resistance - Powertrain Fluids Including Engine Oil, Transmission Fluid, Gear Lube And Coolants To Keep Your Application Locked In Place To Create A Strong Long Lasting Seal

High Flexibility - Ultra Black Silicone Gasket Maker Retains High Flexibility And Oil Resistant Properties And Can Be Used To Replace Pre Cut Gaskets Or Be Used As A Gasket Maker Or Gasket Sealant

Lock It In - Permatex Threadlocker Blue All-purpose Formula Locks And Seals Bolts To Prevent Parts From Loosening Due To Vibration And Protects Threads From Corrosion

Medium Strength- Permatex Threadlocker Blue Is An Anaerobic Threadlocking Material, That Cures With Active Metals And The Absence Of Air To Form A Strong Bond That Resists Leakage, Shock And Vibration

Perfect For Most Jobs- Permatex Threadlocker Blue Is Ideal For All Nut And Bolt Applications 1/4" To 3/4" (6mm To 20mm) And Eliminates The Need To Stock Expensive Lock Nuts And Lock Washers

Creates a secure, secondary seal along the roof’s edges, air vents, vent pipes and screw heads

Adheres firmly to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass and concrete

Compatible with EPDM and TPO sheeting

Clear Silicone Sealant & Adhesive: Is A General Purpose Sealant Adhesive, Rtv (Room Temperature Vulcanized)Silicone Designed For Use In Household Or Mechanical Assembly Applications.

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.

Easy To Use: Silicone Forms A Tough, Waterproof, Weather Resistant Seal On Most Surfaces. It Will Not Shrink Or Crack, And Is Great For Household & Automotive Uses.

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. Ideal for fasteners under 1/4-Inches (6 mm) that require occasional adjustment.

RESULTS. Secure, one-piece assembly that will not loosen under stress.

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.

RESISTANT. Won't drip, leak or melt. Even in high temperatures, LOCTITE 248 self-feeding glue sticks keep their integrity making them perfect for difficult overhead applications.

REMOVABLE WITH HAND TOOLS. Well suited for automotive and other applications where maintenance or servicing is required such as valve cover bolts, water pump bolts, oil pan bolts, drive shaft bolts, rocker studs, carburetor studs, caliper brackets, cylinder heads and more.

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. Works on all metals, including passive substrates (e.g. stainless steel, aluminum, plated surfaces) with improved oil tolerance.

REMOVABLE WITH HAND TOOLS. Well suited for automotive and other applications where maintenance or servicing is required.

Locks and seals threaded fittings

Resists leakage, vibration loosening, moisture, hydraulic fluids and diesel fuels

Lubricates threads for easy assembly and disassembly

A specially designed alkoxy cure RTV sealant for high temperature applications

Specifically recommended for use with the 7.3L power stroke, 6.0L and 6.4L diesel engine

High viscosity material which starts to cure in minutes

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. Works on all metals, including passive substrates (e.g. stainless steel, aluminum, plated surfaces) with improved oil tolerance.

REMOVABLE WITH HEAT. Designed for securing parts that must withstand heavy shock, vibration, or extreme chemical or environmental conditions. Localized heating and hand tools are required to separate parts.

EASY APPLICATIONS: Brushable and paintable consistency

HIGH ADHESION: Works on both bare metal and painted surfaces

FAST SKINNING: Starts in about 10 to 15 minutes

REVOLUTIONARY AND EASY: CARPRO HydrO2 Touchless Silica Sealant is a truly spray-on/rinse-off paint sealant that provides durable UV protection and jaw-dropping water repellent properties. Formulated to save time and money for all the professionals and enthusiasts

PROTECT YOUR ENTIRE EXTERIOR: From dirt, water, chemicals, UV and rain fallout. Apply to areas you never could before! Not only body panels but protects calipers, undercarriage, wheel wells, door jambs, in between seals and more.

READY TO USE FORMULA: One of our greatest innovations of all time (HydrO2) is now even easier to use and available in the new ready to use formula version known as HydrO2 Lite!

The leading non-setting gasket and sealing compound in use worldwide.

Used by the world's major automotive manufacturers and several Formula 1 teams.

Non-hardening and non-setting, vibration resistant, seals surface imperfections and withstands rapid variations in temperature. Allows metal-to-metal contact and is resistant to combustion products, water, engine coolant, petroleum, lubricating oils, kerosene and fluorocarbon refrigerants.

SELF-LEVELING EPOXY: Designed for areas requiring a flowable type sealer

QUICK CURING: Ready for painting in 15 minutes

TRANSPARENT COLOR: Makes for a low-profile appearance

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. Works on all metals, including passive substrates (e.g. stainless steel, aluminum, plated surfaces) with improved oil tolerance.

REMOVABLE WITH HEAT. Designed for securing parts that must withstand heavy shock, vibration, or extreme chemical or environmental conditions. Localized heating and hand tools are required to separate parts.

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. High-temperature anaerobic adhesive that secures slip and press-fit assemblies

RESISTANT. Adds up to 3,000 psi holding power

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 THREAD SEALING. Cures rapidly to withstand 10,000 PSI.

UNIQUE. Replaces most tapes and pipe dopes and pre-coated parts.

Seals and secures metal pipes and fittings; fills the space between threaded metal parts

Prevents leakage caused by tape shredding, vibration loosening, solvent evaporation or damaged threads

Prevents corrosion and galling of threads

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. 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).

FLEXIBLE. Adds flexibility to rigid machined flanges that move in service & eliminates the need for preformed, paper, rubber & cork gaskets.

Non-toxic

DEX-COOL compatible

Engine application is based on liters of volume in cooling system

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.

Wax-free high-gloss sealing for all new, nearly new and polished paintwork surfaces

Protection lasts for up to 6 months

Intensive restoration of colours and excellent water-repellent effect

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.

SINGLE COMPONENT FORMULA: Adheres well to bare metal, primed metal and painted surfaces

MOISTURE CURING PROPERTY: Provides excellent performance in high heat and humidity environments

NON-SHRINKING, NON-CRACKING: Remains flexible and offers superior results to solvent-based sealers

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.

Heavy Duty Gasket Material: The high temperature gasket material helps stop leaks at the source for permanent repairs for your vehicle; Measures 12" x 20" x 1/16" thick for multiple applications

High Temp Gasket Material: The gasket material can be used on vehicles, tractors and used in many other applications; Can be cut to fit your specific repair leaks

Gaskets: From an ordinary camera lens protector to a supercharged racecar engine, gaskets are used in a wide variety of applications to help seal and fill spaces to prevent unwanted gas or liquid leaks

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

FLEXES WITH MOVEMENT. Enhances load bearing & shock absorbing characteristics of the bond area.

ENVIRONMENTAL RESISTANCE. Tolerates contamination by oils, water, weather, vibration and grease.

Easy to use: The BlueDevil Head Gasket Sealer is designed to be easy to use, allowing you to quickly and easily seal leaks in your engine without the need for any special tools or skills.

Permanent seal: This product is formulated to provide a permanent seal for your head gasket, ensuring that you won't have to worry about leaks or other issues down the line. It will repair and seal leaks in blown head gaskets, warped or cracked heads, heater cores, and freeze plugs.

Compatible with all types of engines: Compatible with gasoline and diesel engines, making it a versatile product that can be used on a wide range of vehicles.

【ALL-POWERFUL】This silicone gasket maker can work on all metal, such as stainless steel, aluminum, brass even it is plated or contaminated by minor oils. Also it works on glass, wooden object and anywhere need to seal. They will set completely after 24H and be disassembling.

【APPLYING OCCASION】Ideal for automotive, motorbike, all kinds of metal, oil pans, exhaust manifolds, water pumps, timing covers, differential covers, drive housings, oil pans, valve covers, thermostat housing, mechanical assemblies, machine equipment, 3D printer and oven doors.

【WONDERFUL PERFORMANCE】This RTV (Room Temperature Vulcanized) Silicone gasket maker is more oil resistant than conventional silicone, more flexible than cut gaskets. Safe, low odor and non-corrosive with superior adhesion, endure temperatures up to -60º C ~ 280º C.