3M High Temp Silicone Gasket Black 3Oz 6/Cs

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Pickup currently unavailable at O'Here! Central Warehouse

Good to know: O'Here! provides free delivery for all orders of $65 and more. And picking up your order at our central warehouse is always free! More info here.

Place your order on weekdays* between 9AM and 5PM and we usually have your orders ready for shipping or pickup within 3 hours! Pickup is available on Saturday too from 9AM to 12PM!

More info here.
*excluding Public Holidays


  • Flexible RTV sealant/adhesive compound saves material costs vs. hard or custom gaskets
  • Non-corrosive and resistant to water, oil and coolant for long-lasting performance
  • Can be used as a gasket dressing to improve adhesion and seal
  • Can be used as a gasket alternative when the original gasket is unavailable


Oxygen sensor safe

Our 3M™ High Temp Silicone Gasket is a rapid curing form-in-place silicone gasket adhesive and sealant developed specifically for automobile engines. This flexible, non-corrosive compound can withstand engine heat intermittently up to 600°F. It resists oil, water and ethylene glycol and is oxygen sensor safe. It is easy to apply and cures quickly for added efficiency. Only available in black.

High Performance, High Heat Gaskets in a 3-oz. Tube

Acting as both a flexible adhesive and a durable sealant for automobile engines, our 3M™ High Temp Silicone Gasket is a fast and cost-effective alternative to hard and/or custom gaskets. This versatile form-in-place engine gasket compound can be applied to areas including valve covers, oil and transmission pans, intake manifolds, water pumps, timing chain covers and thermostat housings – it can withstand heat intermittently up to 600°F (301° C). It is non-corrosive and resistant to oil, water and the ethylene glycol commonly used in engine coolants, helping to ensure a lasting seal between auto engine components. The material is also oxygen sensor safe. It is available only in the colour black.

3M™ High Temp Silicone Gasket is easy and efficient to use: operators simply apply it to clean and prepped gasket surfaces. Engine parts can be reassembled immediately, and the engine can be started within 15 minutes of assembly for higher throughput. The gasketing compound works well with 3M™ Gasket Prep and Parts Cleaner PN 08901.

Better Science for Better Collision Repair from 3M

As auto maintenance and collision repair demand faster, more efficient materials and solutions, 3M applies science to our automotive products and to the lives of auto shop professionals. Our 3M™ High Temp Silicone Gasket is a terrific example. Resistant to oil, water and coolant and able to withstand temperatures as high as 600°F, it’s a fast-curing flexible compound that can replace costly custom gaskets while saving time and helping you ensure excellent results from your repair and maintenance shop.

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