Sensor-Safe High-Temp RTV Silicone Gasket (3 oz)
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Permatex Sensor-Safe High-Temp RTV Silicone Gasket (3 oz)

Part No. 81422 Warranty Details  
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Formulated for oxygen sensor equipped engines. First generation 1970 - 1980 gasket maker. Handles temperatures ranging from -65°F to 650°F intermittent and resists auto and shop fluids.
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2 Questions | 2 Answers
Displaying questions 1-2
  • Q:

    How thick of a bead would you use? Like 1/4in, 1/8in? (6mm, 3mm)? I've heard if you use too much on a valve cover it can break off inside and of course that's not good.
    Asked on 8/30/2016 by James from Raleigh, NC

    1 answer



      Hi James! We strive to have all of the information available to our customers when shopping on our website. There are times when the manufacturer does not provide all of the information a customer may require. In this case, even Permatex does not have the bead size listed. For more information, I would suggest that you contact the Permatex directly at 87 PERMATEX (877-376-2839) and they would be in a better position to help you.

      Answered on 9/1/2016 by Steve from AAP
  • Q:

    Hello I have question about this product (PERMATEX).... my question is after apply it to gasket how long I need wait to start on the engine? thanks.

    Antonio Granata
    Asked on 10/24/2012 by Tonynapoli from Fontana CA

    1 answer



      This Permatex Sensor-Safe High-Temp RTV Silicone Gasket (Part No. 81422) cures on exposure to moisture in the air. The product dries tack free in one hour and fully cures in 24 hours. Cure times will vary with temperature, humidity and gap. For further assistance, please feel free to call us at 1-877-238-2623 or visit your nearest Advance Auto Parts store and one of our representatives would be more than happy to assist you.

      Answered on 10/25/2012 by Steve from AAP
Displaying questions 1-2

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