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Red gasket sealant tube, 80 mL, high temperature paste

Loctite

Loctite 135507 High Temp Gasket Sealant 80 mL Red

SKU CH-ZNN0-ZGF08

Red high-temperature gasket sealant paste withstands –75 °F to 600 °F, cures in one day at room temperature and provides a 30-minute working time

  • Withstands extreme heat up to 600 °F
  • Remains flexible down to -75 °F
  • Ready for assembly in 30 minutes
  • 80 mL tube covers multiple gasket jobs
  • Oil-resistant formula protects engine sealing surfaces

Loctite 135507 High-Temp Gasket Sealant 80 mL

This Loctite 135507 tube contains 80 mL of red paste sealant designed for gasketing applications where high heat resistance is required. It suits mechanics and DIYers assembling engine components, exhaust parts or industrial flanges that must stay sealed across extreme temperature swings.

Sustained heat performance up to 600 °F

The cured sealant maintains its integrity from -75 °F up to 600 °F, so it handles continuous engine or exhaust heat without softening or losing adhesion. A 30-minute working time allows careful positioning before the room-temperature cure begins, and full strength is reached after one day.

Paste form in a tube for precise application

The paste consistency stays in place on vertical or overhead flanges, and the tube lets you lay a controlled bead without a separate gun. Series SI 596 formulation resists oil, so the seal holds on lubricated surfaces. The 2.71 fl oz volume covers typical gasket jobs with minimal waste.

Highlights

  • Withstands extreme heat up to 600 °F
  • Remains flexible down to -75 °F
  • Ready for assembly in 30 minutes
  • 80 mL tube covers multiple gasket jobs
  • Oil-resistant formula protects engine sealing surfaces

Specifications

BrandLOCTITE

Questions about this item

How much heat can the cured sealant handle during continuous high-temperature operation?

The sealant is rated for a maximum operating temperature of 600 degrees Fahrenheit.

What surface preparation or existing components are needed before applying this product?

Surfaces must be clean and free of oil or old gasket material for proper adhesion.

Will this paste remain flexible enough for cast-iron and aluminium flanges that expand at different rates?

The high-temperature resistant formulation is designed to maintain a seal across the full -75 to 600 degrees Fahrenheit range.

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