Loctite
Loctite 198819 Slow Dry Flexible Cure Gasket Sealant 7 oz Black
A flexible-cure gasket sealant that withstands -65 to 400 °F and resists oil on cork, metal, plastic and rubber
- Withstands extreme heat up to 400 °F
- Remains flexible in cold down to -65 °F
- Resists oil degradation on engine surfaces
- Bonds cork, metal, plastic and rubber
- Four-hour working time allows precise application
Gasket Sealant for Automotive Repairs
Loctite 198819 is a black paste sealant designed for gasketing applications on cork, metal, plastic and rubber components. It resists oil and handles ethylene glycol fluids across a temperature range of -65 to 400 degrees F. The 7 oz tube suits professional mechanics and DIY owners sealing engine or transmission covers.
Upgrade from Rigid or Fast-Curing Compounds
This product replaces rigid sealants that crack under vibration and fast-skinning formulas that limit assembly time. The four-hour working window lets you position large or complex flanges without rushing. The flexible cure absorbs joint movement that would split harder materials, making the switch worthwhile for vibration-prone housings.
Sustained Sealing Through Heat Cycles
Full cure completes in one day, after which the sealant maintains elasticity across repeated thermal expansion and contraction. Oil resistance prevents degradation from prolonged fluid contact at the upper temperature limit. The cured bead stays pliable rather than turning brittle, preserving the seal during extended service intervals.
Highlights
- Withstands extreme heat up to 400 °F
- Remains flexible in cold down to -65 °F
- Resists oil degradation on engine surfaces
- Bonds cork, metal, plastic and rubber
- Four-hour working time allows precise application
Specifications
| Brand | LOCTITE |
|---|
Questions about this item
What size tube is the Loctite 198819 gasket sealant supplied in?
The sealant comes in a 7 oz tube with a paste consistency that is applied directly to the gasket surface.
How long should I wait after applying the sealant before assembling the parts?
You have a 4 hour working time to position components before the sealant begins to skin over and cure.
When will the gasket sealant need to be reapplied during maintenance?
The sealant remains effective until the joint is broken for repair; full cure takes 1 day and it withstands -65 to 400 °F.
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