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US Part Number: 85420
Canada Part Number: 85420

Permatex® PermaShield™ Fuel Resistant Gasket Dressing & Flange Sealant


Specially formulated for superior fluid resistance, this polyester urethane based gasketing compound withstands extreme temperature changes without hardening. Its non-setting, non-hardening character remains tacky even with rapid changes in temperature, enabling repeated assembly and disassembly of parts. Suitable as either a gasket maker or dressing, PermaShield™ seals surface imperfections between metal parts and is ideal in high performance applications. With an operating temperature range of -60° to 500°F (-50° to 260°C), this compound resists common engine fluids, including oil, gasoline, ethanol, water and anti-freeze and prevents contamination from moisture and dust.


Suggested Applications:
Axle assemblies, hydraulic parts, differential covers, fuel injectors and pumps, oil pans (cast), head gaskets, water pumps, bearing caps/brackets, gearboxes, hydraulic drives/motors, torque converters, timing cases, inlet manifolds, valves, etc.

US Item # CDN Item # Container Size Pack
85420854202 oz. tube, carded 6
US Item # Tech Doc File
85420 SDS  Canada part # SDS


1. Clean and dry surfaces. 2. Apply thin film or bead to both surfaces. 3. Allow ample drying time to completely evaporate solvent. 4. Assemble and torque to manufacturer’s specifications. Seals instantly. May return equipment to service immediately. Replace cap after use. Store below 100°F (38°C).

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Tech Documents

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