Best White Silicone Sealers in 2026

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

Sensor-safe, non-corrosive formula designed for superior adhesion to oily surfaces and long term durability

Superior resistance to powertrain fluids including engine oil, transmission fluid, gear lube and coolants

Temperature Range -65F to 500F (-54C to 260C) intermittent

Reliable, fast-drying, all-purpose sealant dries to a highly tacky, non-brittle film; remains tacky indefinitely

Tacky paste for holding cut gaskets in place during assembly; helps seal cut gaskets

Resists gasoline, oil, antifreeze, axle lube, kerosene, propane and butane; sensor-safe

High temperature performance, adhesion and flexibility

OEM Specified, Sensor-safe, low odor, non-corrosive

Non-flammable, non-toxic

Orange Thread locker can be removed with hand tools and does not require heating to achieve removal

3X the strength of Blue Thread locker

Permute Orange Thread locker ensures that pieces will not loosen or back out over time

Slow-drying, non-hardening brush-top sealant

Resists gasoline, oil and grease

Approved for use in aviation as well as automotive applications

Locks and seals threaded fittings

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

Lubricates threads for easy assembly and disassembly

Designed specially for high-torque and high vibration applications

Maximum vibration resistance, with outstanding resistance to oils, cooling and shop fluids

Low odor and non-corrosive formula

Most Advanced, High Temp Rtv Silicone Gasket Available.Fit Type: Universal

Three Times More Oil Resistant Than Conventional Silicones; Eight Times More Flexible Than Cut Gaskets

Sensor-Safe, Low Odor, And Non-Corrosive With Superior Adhesion

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

Maximum temperature performance

OEM Specified, Sensor-safe, low odor, non-corrosive

Non-flammable, non-toxic

Ideal for on-the-spot and emergency repairs, or when a conventional gasket is unavailable

Fills gaps up to .015" and cures to a solvent-resistant seal that will not tear or decay during service

Parts disassemble easily even after extended service and old gasket material can be removed in minutes with a simple putty knife

Fast-curing formula is sensor safe, low odor and non-corrosive

Retains high flexibility, oil resistance properties through use of a patented adhesion system

Ensures extended drivetrain warranty compliance

Package Dimensions: 8 L x 1.5 H x 3.75 W (inches)

Package Weight : 0.25 pounds

Country of Origin : China

Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, 3.35 oz. Tube, 2 Pack

Effectively replaces almost any cut gasket.Fit Type: Universal Fit

Makes reliable 'formed-in-place' gaskets that resist cracking, shrinking and migrating

Coats pre-cut gaskets to increase reliability without fouling oxygen sensors

Designed specially for high-torque and high vibration applications

Maximum vibration resistance, with outstanding resistance to oils, cooling and shop fluids

OEM specified, guaranteed not to leak

Hi temp

3.35 oz. tube

Fast curing

3 oz. tube

-75 deg F. to 700 deg. F

Post 1980 vehicles

2 PACK

Specially formulated for engines equipped with oxygen sensors

Temperature range: -65F to 650F intermittent

First generation 1970-1980 gasket maker

Specially engineered for making or dressing gaskets in rigid assemblies

Fills gaps up to 0.020 inches

Permits clamping loads to be maintained for strong, leakproof assemblies

Effectively replaces almost any cut gasket

Makes reliable 'formed-in-place' gaskets that resist cracking, shrinking and migrating

Coats pre-cut gaskets to increase reliability without fouling oxygen sensors

Size: 3 oz

Color: Blue

Physical state/appearance: Non-sag paste

Formulated for hi-temp applications, or heavy-duty use

Replaces almost any cut gasket, and coats pre-cut gaskets to increase reliability

Makes reliable 'formed-in-place' gaskets that resist cracking, shrinking and migrating

Designed specially for high-torque and high vibration applications

Maximum vibration resistance, with outstanding resistance to oils, cooling and shop fluids

Low odor and non-corrosive formula

Designed specially for high-torque and high vibration applications

Maximum vibration resistance, with outstanding resistance to oils, cooling and shop fluids

OEM specified, guaranteed not to leak

Sold in case packs of 12

Makes reliable 'formed-in-place' gaskets that resist cracking, shrinking and migrating

Coats pre-cut gaskets to increase reliability without fouling oxygen sensors