Loctite Thread Sealant 545 37482, Pneumatic and Hydraulic Metal Fittings, 36 mL Bottle
- Loctite Thread Sealant 545 (part number 37482) is a high-lubricity, purple anaerobic sealant formulated specifically for locking and sealing high-pressure pneumatic and hydraulic metal fittings.
- Features:
- No fillers or particles — prevents contamination of system fluids, clogging of valves or filters
- High lubricity formulation — enables easy assembly and disassembly of fittings
- Reliable curing on “as-received” metal fasteners — eliminates the need for cleaning or priming
- Wide temperature tolerance — from -65 °F to 300 °F, maintaining seal integrity across extreme conditions
- Specifications:
- Manufacturer: Loctite (Henkel)
- Part Number: 37482
- Product Name: Thread Sealant 545
- Volume: 36 mL (1.22 fl oz)
- Color: Purple
- Seal Type: Anaerobic thread sealant
- Pressure Rating: Up to 10,000 psi
- Temperature Range: -65 °F to 300 °F (some sources list up to 450 °F; see Notes)*
- Quantity: 1 bottle
- The Loctite 37482 can also be referred to as Thread Sealant 545, pneumatic/hydraulic thread sealant, purple pipe thread sealer, high-pressure fitting sealant, Loctite 545 sealant.
Loctite, a trusted brand under Henkel, offers the 545 Thread Sealant (PN 37482) as a purple, high-lubricity anaerobic sealant engineered for reliable, leak-free sealing in pneumatic and hydraulic systems—easy to apply, effective at high pressures, and clean to disassemble.
Q: Is this sealant suitable for hydraulic and pneumatic fittings without clogging system components?
A: Yes, the formula contains no fillers or particles, which prevents contamination of system fluids and clogging of fine filters and valves.
Q: What pressure and temperature ranges can it withstand?
A: It handles pressures up to 10,000 psi and remains effective in temperatures ranging from -65 °F to 300 °F. Some sources note a higher max of 450 °F under certain conditions.
Q: Do I need to clean or prime fittings before applying this sealant?
A: No; the sealant reliably cures on metal-fittings without the need for primer or cleaning, simplifying prep and saving time.
