---
product_id: 223608920
title: "Ultra Red"
brand: "permatex"
price: "4.60 OMR"
currency: OMR
in_stock: null
reviews_count: 11
category: "Permatex"
url: https://www.desertcart.com.om/products/223608920-ultra-red
store_origin: OM
region: Oman
---

# Low odor, non-flammable & non-toxic formula Withstands up to 650°F intermittent heat OEM specified, sensor-safe & non-corrosive Ultra Red

**Brand:** permatex
**Price:** 4.60 OMR
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Seal the deal with Ultra Red – where high heat meets high performance!

## Quick Answers

- **What is this?** Ultra Red by permatex
- **How much does it cost?** 4.60 OMR with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/223608920-ultra-red)

## 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

- • **Clean & Safe Use:** Low odor, non-flammable, and non-toxic for a professional workspace
- • **Precision OEM Spec:** Sensor-safe and non-corrosive for flawless factory-level repairs
- • **Durable Fluid Defense:** Resists oils and common shop fluids to maintain peak performance
- • **Versatile Application:** Perfect as a gasket maker or dressing, meeting OE silicone specs
- • **Extreme Heat Resistance:** Keeps your engine cool under pressure up to 650°F

## Overview

Permatex Ultra Red is a premium high-temperature silicone gasket maker designed for professional-grade automotive repairs. It withstands intermittent heat up to 650°F, is OEM specified for sensor safety and non-corrosiveness, and features a low odor, non-flammable, and non-toxic formula. Ideal for exhaust gaskets and fluid-resistant sealing, it ensures durable, clean, and reliable performance trusted by mechanics and enthusiasts alike.

## 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: Hot Stuff. - This is a very good product that I have used for years re-building motors. Every new item they introduce is always a quality item. Really good for exhaust gasket sealer especially if you have older pitted exhaust headers.
Review: Works amazing - This stuff is great. You must follow the instructions though. Don’t just apply and go.

## 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 | #810 in Automotive ( See Top 100 in Automotive ) #4 in Gasket Sealers #70 in Oils & Fluids |
| Brand | Permatex |
| Color | Ultra Red |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,527) |
| Date First Available | June 20, 2020 |
| Exterior | Machined |
| Is Discontinued By Manufacturer | No |
| Item Thickness | 0.2 Inches |
| Item Weight | 3.36 ounces |
| Item model number | 81630 |
| Manufacturer | Permatex |
| Manufacturer Part Number | 81630 |
| Material | Silicone |
| Model | Permatex Ultra Red High Temperature Gasket Maker 3 oz |
| Product Dimensions | 1.25 x 3.81 x 8 inches |
| UPC | 686226816306 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Permatex
- **Color:** Ultra Red
- **Item Thickness:** 0.2 Inches
- **Material:** Silicone
- **UPC:** 686226816306

## Images

![Ultra Red - Image 1](https://m.media-amazon.com/images/I/81orsMg2uaL.jpg)

## 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 <ProductApplication@Permatex.com> 
Sent: 	Monday, August 16, 2021 10:14 AM
To: 	Pete xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: 	Permatex - Answered <Answered@Permatex.com>
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

### ⭐⭐⭐⭐⭐ Hot Stuff.
*by B***D on December 21, 2025*

This is a very good product that I have used for years re-building motors. Every new item they introduce is always a quality item. Really good for exhaust gasket sealer especially if you have older pitted exhaust headers.

### ⭐⭐⭐⭐⭐ Works amazing
*by J***K on December 19, 2025*

This stuff is great. You must follow the instructions though. Don’t just apply and go.

### ⭐⭐⭐⭐⭐ Does what it should
*by A***R on December 30, 2025*

Works Great

## 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

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**Shop now:** [https://www.desertcart.com.om/products/223608920-ultra-red](https://www.desertcart.com.om/products/223608920-ultra-red)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-01-22*