Description
Loctite® 577 is a medium strength, thixotropic, general purpose thread sealant for straight-to-straight and straight-to-taper threaded fittings. Fills the space between threaded parts and seals and locks at the same time.
- Pack size: 50 ml bottle (Loctite no. 2068186)
- Also available in: 50 ml tube, 250 ml tube
Application
- The product provides an instant, low-pressure seal for metal pipes and fittings. It will not creep, shrink or shred
- Perfect for use on stainless steel without the need for surface activation
- Offers gap performance to 0.01in (0.25 mm)
- Will cure even in the presence of minor surface contaminations from cutting, lubrication, anti-corrosion and protection fluids, or cleaners containing surfactants and corrosion inhibitors
Specifications & Approvals
- Meets the performance requirements of KIWA GASTEC QA AR 214 for admixtures up to and including 100 % hydrogen gas
- NSF P1 Reg. No. 123001
- DVGW Approval (EN 751-1): DVGW Reg. No. NG-5146CQ0312
Characteristics
- Instant low pressure seal
- Excellent chemical resistance
- Permits disassembly with hand tools for servicing
- Locks connection against vibration-induced loosening and other stresses
- Easy to apply
- Cures on active and inactive metals
- Color: yellow
- Content: 50 ml tube
- Available as well in 50ml bottle, 250 ml tube
Technical Information
| Agency Approvals / Specifications | DVGW, WRAS, NSF |
| Colour | Yellow |
| Key Characteristics | Thixotropic |
| Operating Temperature | -10.0 – 135.0 °C |
| Pressure Resistance | 10000.0 psi |
| Viscosity, Brookfield – RVT, @ 25.0 °C Spindle 6, speed 2.5 rpm | 70000.0 – 130000.0 mPa·s (cP) |
Hazard information (CLP)

Signal word: Warning
Hazard statements
- H315: Causes skin irritation.
- H317: May cause an allergic skin reaction.
- H319: Causes serious eye irritation.
- H335: May cause respiratory irritation.
Precautionary statements (P-statements)
Prevention:
- P261: Avoid breathing vapors.
- P280: Wear protective gloves.
Response:
- P333+P313: If skin irritation or rash occurs: Get medical advice/attention.
- P337+P313: If eye irritation persists: Get medical advice/attention.
- P302+P352: IF ON SKIN: Wash with plenty of soap and water.
For consumer use only:
- P101: If medical advice is needed, have product container or label at hand.
- P102: Keep out of reach of children.
- P501: Dispose of contents/container in accordance with national regulation.
Additional labeling
- Contains Tetramethylene dimethacrylate, 2,2′-Ethylenedioxydiethyl dimethacrylate, Acetic acid, 2-phenylhydrazide, maleic acid, Reaction mass of N,N’-ethane-1,2-diylbis(12-hydroxyoctadecan-1-amide).
Storage and disposal
- No specific hazards if used properly.
Henkel AG & Co. KGaA, Henkelstr. 67, 40589 Düsseldorf, GERMANY, +49 211 7970, [email protected], www.henkel.com






Lea T. –
Looks even nicer in real life. Easy to use, without making a mess.
Charlotte –
Surprisingly good quality for the price.
Carlo L. –
Fits perfectly. Great purchase, thank you. No complaints. Impeccable quality.
mia.liebe –
A friend recommended it to me and I’m thrilled with the purchase.
liam_88 –
Product as described. Fast and reliable.
nicolas88 –
No complaints so far.
lorenzo88 –
Very fast shipping. Price matches the quality.
Anna –
Easy to use, no mess at all. Perfect for my needs, couldn’t be happier. Been using it for 2 weeks and already see results! Looks even nicer in person.
Joshua –
Everything as described. Perfect and functional.
Martina B. –
I was skeptical, but now I’ll order regularly. Solved my problem completely! I noticed a difference after a short time! I was skeptical, but now I order regularly.
Sophia –
Looks even nicer in real life.
Luis –
As expected, top-notch. Very stable.
Lucy –
I was skeptical, but now I order regularly. Very effective; noticed a change after just one week.