--- product_id: 240602534 title: "S/S Permatex® - Ultra Red RTV Silicone Gasket Maker up to 650oF Sealant - 3 oz / 85g" brand: "permatex" price: "175.55 DT" currency: TND in_stock: true reviews_count: 5 url: https://www.desertcart.tn/products/240602534-s-s-permatex-ultra-red-rtv-silicone-gasket-maker-up store_origin: TN region: Tunisia --- # Resistant to oils and common shop fluids Withstands up to 650°F intermittent heat OEM specified, sensor-safe, non-corrosive S/S Permatex® - Ultra Red RTV Silicone Gasket Maker up to 650oF Sealant - 3 oz / 85g **Brand:** permatex **Price:** 175.55 DT **Availability:** ✅ In Stock ## Summary > 🔥 Seal the heat, not your worries! ## Quick Answers - **What is this?** S/S Permatex® - Ultra Red RTV Silicone Gasket Maker up to 650oF Sealant - 3 oz / 85g by permatex - **How much does it cost?** 175.55 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/240602534-s-s-permatex-ultra-red-rtv-silicone-gasket-maker-up) ## Best For - permatex enthusiasts ## Why This Product - Trusted permatex brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sensor-Safe Formula:** Protects sensitive electronics while maintaining a perfect seal - • **Extreme Heat Defense:** Seals tight even at 650°F for unstoppable performance - • **Low Odor & Non-Toxic:** Comfortable to use without harsh fumes or hazards - • **Oil & Fluid Resistance:** Keeps your gasket intact against harsh automotive fluids - • **Versatile Gasket Maker:** Perfect for high-temp repairs or as a durable gasket dressing ## Overview Permatex Ultra Red RTV Silicone Gasket Maker delivers professional-grade sealing withstanding intermittent temperatures up to 650°F (399°C). Its sensor-safe, low-odor, and non-corrosive formula resists oils and shop fluids, making it ideal for high-temperature automotive repairs and gasket replacements. ## Description Permatex’s Ultra Red Gasket Maker is ideal for high temperature repairs. Its advanced formula retains a high temperature resistance while also remaining resistant to oils and common shop fluids. High temperature performance gasket – Dual resistance to high temperatures, oils and common shop fluids. Review: A good high-temp sealant. - Needed a quality product to seal a pass-through thermocouple in my electric smoker. Works perfectly. Review: Excellent - Excellent ## Features - High temperature performance, adhesion and flexibility - OEM Specified, Sensor-safe, low odor, non-corrosive - Non-flammable, non-toxic - Can be used as a gasket maker or dressing and meets performance specs of OE silicone gaskets - Withstands up to 650°F (399°C) intermittent ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08CRY2BJB | | Best Sellers Rank | 83,872 in Automotive ( See Top 100 in Automotive ) 481 in Fillers, Adhesives & Sealants | | Brand | Permatex | | Colour | Ultra Red | | Customer Reviews | 4.7 out of 5 stars 2,183 Reviews | | Included Components | Ultra Red High Temperature Gasket Maker | | Item Thickness | 0.2 Inches | | Item Type Name | Permatex Ultra Red High Temperature Gasket Maker 3 oz | | Item Weight | 95 g | | Item thickness | 0.2 Inches | | Manufacturer | Permatex | | Manufacturer Part Number | 81630 | | Material | Silicone | | Model Number | 81630 | | UPC | 686226816306 | | Unit Count | 1.0 count | ## Product Details - **Brand:** Permatex - **Colour:** Ultra Red - **Item thickness:** 0.2 Inches - **Material:** Silicone - **UPC:** 686226816306 ## Images ![S/S Permatex® - Ultra Red RTV Silicone Gasket Maker up to 650oF Sealant - 3 oz / 85g - Image 1](https://m.media-amazon.com/images/I/81orsMg2uaL.jpg) ![S/S Permatex® - Ultra Red RTV Silicone Gasket Maker up to 650oF Sealant - 3 oz / 85g - Image 2](https://m.media-amazon.com/images/I/61AErULPjnL.jpg) ![S/S Permatex® - Ultra Red RTV Silicone Gasket Maker up to 650oF Sealant - 3 oz / 85g - Image 3](https://m.media-amazon.com/images/I/71lphSmR33L.jpg) ![S/S Permatex® - Ultra Red RTV Silicone Gasket Maker up to 650oF Sealant - 3 oz / 85g - Image 4](https://m.media-amazon.com/images/I/814WizbU3nL.jpg) ![S/S Permatex® - Ultra Red RTV Silicone Gasket Maker up to 650oF Sealant - 3 oz / 85g - Image 5](https://m.media-amazon.com/images/I/71JCBSHmoUL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: can it be used on shingles** A: Shingles on a roof, or shingles on your body? I'd suggest calling a roofer if you need to use this on your shingles. You can apply it to the shingles on your body then call the doctor in the morning. It will keep the shingles sealed and prevent leakage until you can get to the doctor. **Q: is this food grade? or can i use this on ovens and BBQ grills? it will not directly touch the food but there is a chance that it will. thanks** A: I sent an email to Permatex regarding the use of this specific RTV Silicone product (81160) to seal a gap in a steamer used in my sandwich shop (gap between 300 degree F steam generator basin and steamer housing). Their response indicates that NONE of the Permatex products are certified food safe: From: Permatex - Product Application Sent: Monday, August 16, 2021 10:14 AM To: Pete xxxxxxxxxxxxxxxxxxxxxxxxxxxx Cc: Permatex - Answered Subject: RE: New submission from Product Support Form Pete, Our products including the Red RTV Silicone is not FDA or NSF certified for indirect and direct food contact or for drinking water applications. Don Sutliff Senior Product Support Specialist ITW Permatex, Inc. 6875 Parkland Blvd. Solon, Ohio 44139 Apparently, Permatex is focused on automotive applications so food safe certification is not something they are concerned about. There are other brands of RTV silicone sealers that are specifically high temp food grade , such as ASI 502 and Sil-Bond "Food Grade NSF FDA RTV Silicone Sealant Adhesive Red High Temp". **Q: Is this compatible with differential fluid?** A: Yes, 81160 is used on the differential cover. **Q: Can I use red etc for interior application on a tin ceiling with exstream heat from the Fl sun ?** A: this is over kill but yes... are you trying to seal a leek or just hold things up?? this is a sealer not a contact cement. ## Customer Reviews ### ⭐⭐⭐⭐⭐ A good high-temp sealant. *by M***. on 17 July 2026* Needed a quality product to seal a pass-through thermocouple in my electric smoker. Works perfectly. ### ⭐⭐⭐⭐⭐ Excellent *by R***O on 30 November 2024* Excellent ### ⭐⭐⭐⭐⭐ Excellent High-Temperature Gasket Maker That Seals Reliably *by L***Z on 9 July 2026* I used the Permatex Ultra Red 81630 on a high-heat automotive application, and it performed exactly as expected. It spreads easily, creates a strong, flexible seal, and handles high temperatures without cracking or shrinking. The curing process was straightforward, and once fully cured, it provided a leak-free seal. It's perfect for exhaust manifolds, headers, turbo components, and other high-temperature areas. The 3 oz tube is easy to use and provides enough material for several repairs. I would definitely buy it again for future automotive projects. ## Frequently Bought Together - Permatex 81630 Ultra Red High Temperature Gasket Maker, 3 oz - Permatex 85080 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, Sensor Safe And Non-Corrosive, For High Flex And Oil Resistant Applications 9.5 oz - Permatex 82194 Ultra Grey Rigid High-Torque RTV Silicone Gasket Maker, Sensor Safe And Non-Corrosive, For High Torque And Vibration Resistant Applications, 3 oz --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/240602534-s-s-permatex-ultra-red-rtv-silicone-gasket-maker-up](https://www.desertcart.tn/products/240602534-s-s-permatex-ultra-red-rtv-silicone-gasket-maker-up) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-25*