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Loctite 577, 50 ml – tube, medium-strength thread sealant
Description
Loctite 577 – 50 ml, tube is a thixotropic anaerobic thread sealant for metal-to-metal pipe threads. It cures on assembly, providing durable sealing performance and resistance to vibration.
Advantages and unique features
- Medium strength – serviceable and removable with normal tools.
- Clean, non-sag application from a tube.
- Reliable cure on stainless steel and other passive metals.
- Seals clearances up to 0.25 mm; tolerant to minor oil residues.
Properties and applications
- Use: sealing metal pipe and fitting threads across industrial and building services.
- Application: clean and degrease, apply a continuous bead and assemble; low-pressure seal on assembly, full performance 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
Keep in the original, tightly closed tube. Store cool and dry. Do not return dispensed material to the container.
FAQ
1) Can it be used on stainless steel?
Yes, it cures reliably on passive metals including stainless steel.
2) What clearance can it seal?
Up to about 0.25 mm.
3) When is full performance achieved?
Typically after around 24 hours at room temperature.
Technical data
| Maximum Operating Temperature in °C | 150 |
| Color | Yellow |
| Minimum Operating Temperature in °C | -55 |
Loctite Henkel Premium Partner
Free delivery from 600 EURO to EU Countries*
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