About Sealant Flexibility
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Non-Hardening Thread Sealants with PTFE
PTFE provides a slippery surface that keeps threads from binding. These sealants never fully harden, remaining pliable enough to self-heal and stop leaks before they start, so they’re often used in high-vibration applications that could cause standard thread sealants to fail. Since they have low locking strength, these sealants can be adjusted without tools.
Sealants that meet NSF/ANSI 61 adhere to safety standards for drinking water systems.
Container | Max. Pressure, psi | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size, fl. oz. | Type | For Fluids | For Gases | Temp. Range, °F | For Max. Thread Dia. | Consistency | Specifications Met | Color | Each | |
Low Locking Strength | ||||||||||
Slic-Tite Sealants | ||||||||||
| 4 | Brush-Top Can | 10,000 | 3,000 | -50° to 500° | 2" | Paste | NSF/ANSI 61, UL Listed | White | 0000000 | 000000 |
| 8 | Brush-Top Can | 10,000 | 3,000 | -50° to 500° | 2" | Paste | NSF/ANSI 61, UL Listed | White | 0000000 | 00000 |
| 16 | Brush-Top Can | 10,000 | 3,000 | -50° to 500° | 2" | Paste | NSF/ANSI 61, UL Listed | White | 0000000 | 00000 |
| 32 | Brush-Top Can | 10,000 | 3,000 | -50° to 500° | 2" | Paste | NSF/ANSI 61, UL Listed | White | 0000000 | 00000 |
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 |