---
product_id: 240602535
title: "27038 Optimum Red RTV Silicone Gasket Maker: Suitable for Exhaust Manifold,Header,Turbochargers & Slip Fit Exhaust Parts,Temperature Resistant(up to 399°C),Sensor Safe,Non-Corrosive 3.35oz"
brand: "permatex"
price: "¥4520"
currency: JPY
in_stock: true
category: "Permatex"
url: https://www.desertcart.jp/products/240602535-27038-optimum-red-rtv-silicone-gasket-maker-suitable-for-exhaust
store_origin: JP
region: Japan
---

# Resists thermal cycling Max temp 399°C / 750°F Sensor-safe & non-corrosive 27038 Optimum Red RTV Silicone Gasket Maker: Suitable for Exhaust Manifold,Header,Turbochargers & Slip Fit Exhaust Parts,Temperature Resistant(up to 399°C),Sensor Safe,Non-Corrosive 3.35oz

**Brand:** permatex
**Price:** ¥4520
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal the heat, own the street!

## Quick Answers

- **What is this?** 27038 Optimum Red RTV Silicone Gasket Maker: Suitable for Exhaust Manifold,Header,Turbochargers & Slip Fit Exhaust Parts,Temperature Resistant(up to 399°C),Sensor Safe,Non-Corrosive 3.35oz by permatex
- **How much does it cost?** ¥4520 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/240602535-27038-optimum-red-rtv-silicone-gasket-maker-suitable-for-exhaust)

## 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

- • **Fast-Paced Pro Ready:** Designed for mechanics and DIYers who demand speed and maximum temperature resistance.
- • **Extreme Heat Defender:** Withstands scorching temps up to 750°F (399°C) for unbeatable durability.
- • **OEM-Grade Reliability:** Meets strict manufacturer specs for professional-grade performance every time.
- • **Sensitive Tech Compatible:** Sensor-safe formula protects your vehicle’s critical components without corrosion.
- • **Long-Lasting Seal Integrity:** Maintains a perfect seal through intense thermal cycling—no cracks, no shrinkage.

## Overview

Permatex 27038 Optimum Red RTV Silicone Gasket Maker is a premium, sensor-safe, non-corrosive sealant engineered for extreme temperature resistance up to 750°F (399°C). Ideal for exhaust manifolds, headers, turbochargers, and slip-fit exhaust parts, it delivers OEM-level performance with superior durability against aging, weathering, and thermal cycling—perfect for professionals and serious DIYers.

## Description

Permatex’s NEW Optimum Red is an advanced maximum performance, max temperature RTV gasket maker. It resists aging, weathering and thermal cycling without hardening, shrinking or cracking. Premium professional gasket maker for today’s fast-paced heavy DIY’er and professional mechanics’ seeking a maximum temperature solution to withstand extreme temperatures up to 750°F (399°C) intermittent.

## Features

- Provides maximum temperature performance for demanding applications.
- Sensor-safe and non-corrosive RTV silicone formulation, ensuring compatibility with sensitive components.
- Meets OEM specifications, meeting the standards and requirements set by manufacturers.
- Temperature resistance up to 750°F (399°C) in intermittent usage, allowing for reliable operation in high-temperature environments.
- Resistant to high thermal cycling, maintaining performance and sealing integrity even under extreme temperature fluctuations.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08CRYCZ91 |
| Best Sellers Rank | 115,910 in Automotive ( See Top 100 in Automotive ) 616 in Fillers, Adhesives & Sealants |
| Brand | Permatex |
| Colour | Optimum Red |
| Country Of Origin | USA |
| Customer Reviews | 4.7 4.7 out of 5 stars (407) |
| EU Spare Part Availability Duration | 5 Years |
| Included Components | Optimum Red High Temperature Gasket Maker |
| Item Thickness | 0.2 Inches |
| Item Type Name | Permatex Optimum Red High Temperature Gasket Maker 3.35 oz |
| Manufacturer | Permatex Products |
| Manufacturer Part Number | 27038 |
| Material | Silicone |
| Model Number | 27038 |
| Number of Items | 1 |
| UPC | 686226987631 686226270382 |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 750 Degrees Fahrenheit |

## Product Details

- **Brand:** Permatex
- **Colour:** Optimum Red
- **Item thickness:** 0.2 Inches
- **Material:** Silicone
- **Upper temperature rating:** 750 Degrees Fahrenheit

## Images

![27038 Optimum Red RTV Silicone Gasket Maker: Suitable for Exhaust Manifold,Header,Turbochargers & Slip Fit Exhaust Parts,Temperature Resistant(up to 399°C),Sensor Safe,Non-Corrosive 3.35oz - Image 1](https://m.media-amazon.com/images/I/813a9mGj4BL.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- Permatex 27038 Optimum 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 81878 Ultra Copper Maximum Temperature RTV Silicone Gasket Maker, 3 oz. Tube

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**Shop now:** [https://www.desertcart.jp/products/240602535-27038-optimum-red-rtv-silicone-gasket-maker-suitable-for-exhaust](https://www.desertcart.jp/products/240602535-27038-optimum-red-rtv-silicone-gasket-maker-suitable-for-exhaust)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-11-14*