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High-Temperature Thread Sealants
These sealants have high locking strength, so they work in demanding applications, such as securing mounting studs in motor housings. They also withstand applications with large temperature swings.
Heat cure sealant requires heat of at least 212° F to harden. Above 300° F, the sealant hardens in about 15 minutes. For temperatures below 300° F, it may take up to 4 hours to harden. It requires both heat and a hand tool to unthread.
1500° F max. temp. sealants are for use on cement-lined pipe joints prior to welding. The heat from the welding torch helps them begin to harden.
Sealants that cannot be sold to the listed regions are restricted due to VOC (Volatile Organic Compounds) regulations.
Container | Max. Pressure, psi | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | For Fluids | For Gases | Temp. Range, °F | For Max. Thread Dia. | Consistency | Specifications Met | For Use On | Color | Each | |
Medium Locking Strength | ||||||||||||||
Heat Cure Loctite® Sealants | ||||||||||||||
| 5540 | 16 | Can | 10 sec. | 12 hrs. | 2,900 | 2,900 | -40° to 1300° | 4" | Thin Liquid | MIL-S-15204 | Aluminum, Brass, Bronze, Iron, Stainless Steel, Steel, Titanium, Cast Iron, Galvanized Iron, Galvanized Steel, Metal, Tin, Pipe, Concrete | Brown | 00000000 | 0000000 |
| 5550 | 32 | Can | 10 sec. | 2 hrs. | 5,000 | 5,000 | -40° to 1500° | 6" | Paste | MIL-S-15204 | Aluminum, Brass, Bronze, Iron, Stainless Steel, Steel, Titanium, Cast Iron, Galvanized Iron, Galvanized Steel, Metal, Tin, Concrete | Brown | 00000000 | 000000 |