Loctite
Loctite 1540591 MR 5009 Red Gasket Sealant 19.22 fl oz
Solvent-based gasket sealant withstands -65 to 500 °F and fully cures in five minutes
- Withstands extreme heat up to 500 °F for reliable sealing
- Remains flexible down to -65 °F preventing cracks in freezing conditions
- Fully cures in just 5 minutes reducing downtime on repairs
- Resists water ingress protecting gaskets from leaks and corrosion
- Bonds cork, felt, metal, paper and rubber for versatile use
Red Gasket Sealant for High-Temperature Joints
Loctite MR 5009 is a solvent-based liquid sealant designed to form flexible gaskets on cork, felt, metal, paper and rubber surfaces. The red compound resists water and operates continuously from -65 °F to 500 °F, reaching full cure in five minutes. It suits automotive and industrial maintenance where a formed-in-place gasket must withstand extreme thermal cycling.
Temperature and Chemical Limits Define Use
The sealant remains stable up to 500 °F and down to -65 °F, so it cannot serve joints that exceed this range or see sustained exposure to aggressive solvents beyond water. Compliance marks include California Proposition 65, CEPA DSL/NDSL, CERCLA/SARA sections 302, 311, 312, 313, OSHA 29 CFR 1910.1200 and TSCA, confirming regulated chemical content but imposing no additional application restrictions.
Replaces Cut Gaskets on Compatible Flanges
It replaces pre-cut cork, felt, paper or rubber gaskets where a liquid-formed seal reduces inventory and conforms to irregular flanges. The jump is worth it when assembly speed matters and the joint materials are listed in the compatibility table. It does not suit buyers who need a sealant for plastics, glass or continuous immersion in fuels and oils not covered by the water-resistance claim.
Highlights
- Withstands extreme heat up to 500 °F for reliable sealing
- Remains flexible down to -65 °F preventing cracks in freezing conditions
- Fully cures in just 5 minutes reducing downtime on repairs
- Resists water ingress protecting gaskets from leaks and corrosion
- Bonds cork, felt, metal, paper and rubber for versatile use
Specifications
| Brand | LOCTITE |
|---|
Questions about this item
Should I pick the 19.22 fl oz can or a different size?
The listing supplies a single 19.22 fl oz can of Loctite MR 5009 red gasket sealant. No other container sizes appear in the data.
What does the 500 °F maximum temperature mean when the sealant is on the engine?
The cured sealant remains stable up to 500 °F and down to -65 °F, so it withstands normal engine and exhaust heat cycles without breaking down.
Which standards apply to this solvent-based sealant and what do they limit?
It meets OSHA 29 CFR 1910.1200, TSCA, CERCLA/SARA Sections 302, 311, 312 and 313, plus California Proposition 65 for cancer and reproductive-hazard disclosure.
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