

🔧 Lock it down, seal it tight — the pro’s choice for flawless thread security!
LOCTITE 577 is a 50ml medium strength industrial thread sealant designed for metal pipes and fittings. Its acrylate-based formula offers immediate sealing with heat and chemical resistance, suitable for both passive and active metals. The thixotropic liquid prevents run-off, ensuring easy application and reliable sealing under low pressure, making it ideal for professional plumbing and industrial use.
| ASIN | B002T8WZ8G |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 10,212 in DIY & Tools ( See Top 100 in DIY & Tools ) 225 in Sealers |
| Colour | Yellow |
| Customer Reviews | 4.6 4.6 out of 5 stars (471) |
| Date First Available | 13 Mar. 2017 |
| Included Components | 1 |
| Item Package Quantity | 1 |
| Item Weight | 90 g |
| Item model number | 577 |
| Manufacturer | Henkel |
| Material | Acrylate |
| Measurement System | Metric |
| Number of Pieces | 1 |
| Part Number | 2068186 |
| Product Dimensions | 4.7 x 4.9 x 14.1 cm; 90 g |
| Size | 50 ml |
| Special Features | Heat Resistant |
| Style | Industrial |
| Volume | 50 Millilitres |
J**S
Lock tight
Very good quality Works well no air leaks
R**S
Perfect.
As described, thank you.
A**R
perfect stuff....wont use anything else
so i work on steam heated industrial washers and dryers and got fed up with ptfe tape being a pain to apply or it failing on the first week.. this stuff is easy to apply and sets almost right away ,can handle the high temps from steam and holds the joint perfectly.. and u can still remove the threaded joint and easy to clean off.. great on any compression olive fittings... its a little expensive but then so would having to restart the whole job a week later. its never failed to do the job..
J**T
Its works !
I have struggled on and off for years with the occasional drip/leak from radiators. Never knowing if to give it another turn, or ten of ptfe tape. Or should I risk stripping the thread and tighten that nut up a bit more. After using this stuff it takes all that doubt away. Happy customer, happy me. Would like for it to be a bit cheaper if I had to give it a down side. Thats the only reason for 4 stars.
A**R
Brilliant stuff
Absolutely brilliant, expensive but does the job so worth the expense
M**N
Superb sealing product
Takes the guess work out of sealing radiator tails.
K**L
Brilliant, amazing stuff
Works quickly, have sealed up about half a dozen airline connectors (no leaks at all - compressor tank holds pressure for days where the joints with ptfe tape looked/sounded well sealed (no hissing) it would be empty in a few hours) , locked an outside tap in place where ptfe tape wouldn't seal unless the tap was at an odd angle, and dismantled and repaired a pressure washer foam lance with this stuff, truly amazing.
S**A
Excellent Stuff
I have always used PTFE tape on radiator threads but this is easier and quicker to apply and so far after maybe 20 fittings has been 100% effective. It is quite expensive but if it saves the time fixing the occasional leak or getting a call back it is well worth it.
E**Z
… immer dort, wo im Seewasser elelstahl auf Aluminium trifft. Damit sich die Schrauben irgendwann noch lösen lassen.
R**6
Bon produit conforme à la commande
F**K
Loctite 577 wurde in einer anderen unbrauchbaren Tube geliefert! Nicht wie abgebildet.
P**E
Conforme
J**U
Fini les fuites grâce à ce produit. Je regrette de ne pas l'avoir connu avant
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