Loctite 577 yellow anaerobic metal pipe thread sealant, medium strength, high viscosity, chemical resistant, multipurpose, P1 NSF, WRAS, DVGW Approved
Product code: 2068516
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Product description
Loctite 577 – 50 ml, accordion bottle is a one-component, thixotropic anaerobic thread sealant for metal pipe and fitting threads. It cures after air exclusion to deliver durable, leak-free joints, resisting vibration and pressure fluctuation.
Advantages and unique features
- Medium strength – removable with standard tools.
- High viscosity, non-sag application; accurate metering from accordion packaging.
- Reliable cure on active and passive metals, including stainless steel.
- Gap fill up to 0.25 mm; tolerant of minor oil contamination.
- Yellow paste with UV fluorescence for inspection.
Properties and applications
- Use: sealing metal-to-metal threaded connections in industrial, water and heating systems.
- Substrates: brass, copper, steel and stainless steel.
- Application: clean/degrease threads, apply a continuous bead, assemble; low-pressure seal on assembly, full properties after cure.
Technical data
| Parameter | Value |
|---|---|
| Chemistry | Acrylic, dimethacrylate ester (anaerobic) |
| Appearance / colour | Yellow thixotropic paste, UV fluorescent |
| Viscosity (25 °C) | ≈ 70,000–130,000 mPa·s |
| Density | ≈ 1.1 g/cm³ |
| Strength | Medium |
| Gap fill | up to 0.25 mm |
| Full cure | ≈ 24 h at 22 °C |
| Standards / approvals | EN 751-1 class H (DVGW), NSF P1 registration |
| Storage | +8 to +21 °C; cool, dry, tightly closed |
Storage recommendations
Store in a cool, dry place in the original container. Prevent contamination and do not return dispensed material to the bottle.
FAQ
1) Is the joint serviceable later?
Yes. Medium strength allows disassembly with normal tools.
2) What clearance can it seal?
Up to approximately 0.25 mm.
3) When will full performance be reached?
Typically after about 24 hours at room temperature.
Product features
- Maximum Operating Temperature in °C 150
- Color Yellow
- Minimum Operating Temperature in °C -55
- Adhesive type Methacrylate
- Strength Medium
- Fluorescence Yes
Product safety
Manufacturer
Henkel Polska Sp. z o.o.
Domaniewska 41
02-672 Warszawa, Poland
Responsible person in the EU
Henkel Polska Sp. z o.o.
Domaniewska 41
02-672 Warszawa, Poland
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