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Red gasket sealant cartridge 10.15 oz Loctite 475377

Loctite

Loctite 475377 High Temp Gasket Sealant 10.15 oz Red

SKU CH-KWBE-ZE727

High-temperature gasket sealant withstands -60 °F to 475 °F, cures at room temperature in one day with a 45-minute working time, and resists oil on glass, metal, plastic and wood

  • Withstands 475 °F continuous heat
  • Remains flexible down to -60 °F
  • Oil-resistant formula protects engine gaskets
  • 45-minute work time allows precise application
  • Bonds glass, metal, plastic and wood

Industrial Gasket Sealant 10.15 oz

This red high-temperature paste seals flanges and gaskets on engines, transmissions and industrial equipment. It cures at room temperature into a flexible rubber that resists oil and vibration. The 10.15 oz cartridge fits standard caulking guns for controlled application. Mechanics and maintenance teams use it where solid gaskets are unavailable or impractical.

Suitable Users And Limits

The sealant suits technicians who need a non-sagging, oil-resistant joint that survives -60 °F to 475 °F. It is not for buyers who require instant structural strength, a paintable surface or a product approved for potable water systems. Applications demanding a cure time shorter than one day or a working window longer than 45 minutes should look elsewhere.

Critical Spec Max Temp 475 °F

The 475 °F maximum operating temperature is the single figure that decides fitment; exceed it and the seal will degrade. At the other extreme the compound remains functional down to -60 °F. Full cure requires one day at room temperature, giving a 45 minute working window for assembly. Series SI 9160 identifies the exact chemistry for reordering.

How it compares

Measured against everything we stock in Caulking & Sealing Supplies, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 63% of the 631 comparable items (median $16.99).

Specifications

Product
Brand nameLOCTITE

Questions about this item

Which Loctite 475377 size should I pick for my repair?

The cartridge holds 10.15 fl oz of red paste, the only capacity offered for this industrial-grade gasket sealant.

What does the 475 °F rating mean once the sealant is cured in an engine?

After a full day at room temperature the RTV silicone withstands continuous heat up to 475 °F and stays flexible down to -60 °F.

How does the room-temperature vulcanizing cure affect my assembly timeline?

You have 45 minutes working time to position parts before the paste skins over; full cure is reached in one day.

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