Asked by: Ottavio Guldris
asked in category: General Last Updated: 5th February, 2020

Is permatex black silicone gas resistant?

Permatex PermaShield Fuel Resistant Gasket Dressing and Sealant is a polyester urethane sealant with strong resistance to gasoline and all other automotive fluids, making it excellent for a variety of applications, including oil pans, axle assemblies and fuel injectors.

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In this way, is silicone sealant resistant to gasoline?

No, Ultra Blue® is a silicone-based product, that will offer a good seal, and has good resistance to oil and coolant, however, silicones are not recommended for use in a gasoline environment. The gasoline will attack the product.

Also Know, does gas dissolve silicone? As for silicone, yeah, it breaks-down in gasoline. Not only will it leak, but you will find that it will also be clogging your fuel filter, carburetor or injectors soon. This is why you should make a gasket.

In respect to this, is RTV silicone fuel resistant?

An advancement of silicone technology significant to the aircraft industry is the development of fast-cure, room-temperature-vulcanized (RTV) silicone adhesives with fuel-resistant properties.

How do you use black silicone?


  1. Clean and dry all surfaces.
  2. Cut nozzle to desired bead size, apply to one surface and assemble immediately.
  3. Surfaces being bonded may need clamping for 1 hour or until silicone is firm.
  4. Silicone”skins” and becomes tack free in one hour.

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