Permatex 27138 Optimum Red High Temperature Gasket Maker, 8 Oz - High Performance Silicone Sealant for Automotive, Marine & Industrial Use - Perfect for Engine Gaskets, Exhaust Systems & High Heat Repairs

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.

Maximum temperature performance

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

Top Job Applications Header, manifold, slip-fit exhaust parts, turbocharge and withstands up to 750°F (399°C) intermittent