Permatex High-Temp RTV Silicone Gasket Maker - Red, 311g
Permatex High-Temp RTV Silicone Gasket Maker is an amazing product that can be used for a huge variety of automotive applications. With a temperature range from -54 degrees Celsius to 343 degrees Celsius this silicone can be used to coat pre-cut gaskets or even in some instances replace the gasket. The versatility of this gasket maker is incredibly as it is suitable for sealing components that use oil or water. A great example of uses are for valve covers, oil sumps, timing covers as well as water pumps, coolant outlets and thermostat housings.
Permatex High-Temp RTV Silicone Gasket Maker is an amazing product that can be used for a huge variety of automotive applications. With a temperature range from -54 degrees Celsius to 343 degrees Celsius this silicone can be used to coat pre-cut gaskets or even in some instances replace the gasket. The versatility of this gasket maker is incredibly as it is suitable for sealing components that use oil or water. A great example of uses are for valve covers, oil sumps, timing covers as well as water pumps, coolant outlets and thermostat housings.
Permatex High-Temp RTV Silicone Gasket Maker is an amazing product that can be used for a huge variety of automotive applications. With a temperature range from -54 degrees Celsius to 343 degrees Celsius this silicone can be used to coat pre-cut gaskets or even in some instances replace the gasket. The versatility of this gasket maker is incredibly as it is suitable for sealing components that use oil or water. A great example of uses are for valve covers, oil sumps, timing covers as well as water pumps, coolant outlets and thermostat housings.
Permatex High-Temp RTV Silicone Gasket Maker is an amazing product that can be used for a huge variety of automotive applications. With a temperature range from -54 degrees Celsius to 343 degrees Celsius this silicone can be used to coat pre-cut gaskets or even in some instances replace the gasket. The versatility of this gasket maker is incredibly as it is suitable for sealing components that use oil or water. A great example of uses are for valve covers, oil sumps, timing covers as well as water pumps, coolant outlets and thermostat housings.
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The lowest price for Permatex High-Temp RTV Silicone Gasket Maker - Red, 311g right now is $17.82 at Allied Auto Online, compared across 11 retailers.
The all-time low was $17.82 on 28 May 2026. That's the lowest price we've ever tracked — a great time to buy.
Prices last updated 20 June 2026.
Last updated at 20/06/2026 23:14:01
Permatex 81409 High Temp Red Silcone Gasket Maker 311 g
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Permatex Ultra Red Silicone Gasket Maker (Cartridge)
Free 60-day returns
Permatex High Temperature Red RTV Silicone Gasket Maker 311g
Free delivery
PERMATEX 81409 HI TEMP RED RTV SILICONE GSKT MKR 311G
Delivery between 25 June – 1 July $40
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Permatex High Temp. Rtv Gasket Maker, 11
Delivery $572.65
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Permatex High-Temp RTV Silicone Gasket Maker, Red 311g 81409 | 11oz. | 0686226814098
Delivery $10
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Permatex 81409, One Sealant 11 Oz Cartridge High Temperature Silicone
Delivery $94.12
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Permatex High Temp Red Silicone Rtv Gasket Maker 311g Formed In Place Heavy Duty PX81409
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Gasket Maker Red Rtv 81409 | Universal Auto Spares
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originally posted on zoro.com
The silicone sealant does what it needs to do, so far it has hold up. As always ZORO always ships everything quickly and every thing comes well packaged.
originally posted on zoro.com
This is exactly what my customers use in the oilfield. It's tried and true. Highly recommend for the midwest weather. #sweepstakes
originally posted on supercheapauto.com.au
For making thick flexible high temperature gaskets that aren't exposed to heaps of oil, this is one of the best silicone RTV out there if you can put up with the traditional cure time.You apply the product, lightly tighten the bolts until you see it squeeze a little out of the joint, wait an hour or more for it to harden, then clamp the joint and wait for it to cure. Then and only then add fluids.The other interesting thing about this RTV, that you should check is still valid, is that it is food safe for drinking water according to US standards.On a negative side, it isn't the most "sticky bonding silicone around". This isn't a for everything silicone rtv.
| Variant | |
| size | 311g |
Permatex 81409 High Temp Red Silcone Gasket Maker 311 g
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Permatex Ultra Red Silicone Gasket Maker (Cartridge)
Free 60-day returns
Permatex High Temperature Red RTV Silicone Gasket Maker 311g
Free delivery
PERMATEX 81409 HI TEMP RED RTV SILICONE GSKT MKR 311G
Delivery between 25 June – 1 July $40
PERMATEX 81409 RTV 310G HI TEMP SILICONE GASKET MAKER (596-300)
Delivery between 25 June – 3 July $25
The silicone sealant does what it needs to do, so far it has hold up. As always ZORO always ships everything quickly and every thing comes well packaged.
This is exactly what my customers use in the oilfield. It's tried and true. Highly recommend for the midwest weather. #sweepstakes
For making thick flexible high temperature gaskets that aren't exposed to heaps of oil, this is one of the best silicone RTV out there if you can put up with the traditional cure time.You apply the product, lightly tighten the bolts until you see it squeeze a little out of the joint, wait an hour or more for it to harden, then clamp the joint and wait for it to cure. Then and only then add fluids.The other interesting thing about this RTV, that you should check is still valid, is that it is food safe for drinking water according to US standards.On a negative side, it isn't the most "sticky bonding silicone around". This isn't a for everything silicone rtv.
#sweepstakes: We needed these for a local company. They say that this works great for their company
Excellent coverage and sets nicely to form an excellent gasket. Good value for the $$
Flows from the cartridge smoothly and sets fairly quickly with enough time to position the gasket and then hold it in place. Forms a rubbery seal of it's own as well. I would not hesitate to purchase this again. Recommend.
I suspect the tube was new old stock. It was very dry and wouldn't feed out of a caulk gun properly. Ended up cutting it open to salvage what I could.
I used this as a high temperature adhesive to glue a panel on that had come off an oven door. It’s working perfectly whereas previous attempts using liquid nails and silicon didn't cope with the high temperatures. Very happy with the product in that application.
A little off beat, I used it to seal a barbeque Smoker after some modifications were made. The original set up allowed too much smoke to escape without doing what I wanted it to do. Food is smoking at a lower temp and coming out with a nice smoky taste
I purchased this product on the advise of some others and four it very easy to apply but found you have to wait until it forms a light skin then assemble parts to firm before fully tensioning to seal all engine parts - very happy with results
| Variant | |
| size | 311g |
