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🔧 Seal it once, seal it right — the pro’s choice for leak-proof pipes!
LOCTITE SI 5331 is a high-performance, acetoxy silicone thread sealant designed for industrial and professional plumbing applications. It provides a permanently elastic, vibration-resistant seal for plastic and metal water pipes, effective across a wide temperature range (-50 to +150°C). Packaged in convenient 12x100ml tubes, it cures via ambient humidity without mixing, and is certified safe for drinking water and food-related uses, ensuring reliable, long-lasting pipe connections.
| Asin | B0052EGAXK |
| Best Sellers Rank | #37,454 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #244 in Hardware Sealers |
| Brand Name | LOCTITE |
| Color | White |
| Compatible Material | Metal |
| Container Type | Tube |
| Customer Reviews | 4.5 4.5 out of 5 stars (255) 4.5 out of 5 stars |
| Full Cure Time | 96 Hours |
| Included Components | 1x LOCTITE SI 5331 |
| Item Form | Paste |
| Item Package Quantity | 1 |
| Item Type Name | LOCTITE SI 5331 |
| Item Weight | 100 g |
| Manufacturer | Henkel |
| Material Type | Metal,Plastic,Silicone |
| Model | 5331 |
| Number Of Pieces | 12 |
| Other Special Features Of The Product | Strong |
| Part Number | 2061031 |
| Specific Uses For Product | Craft |
| Tensile Strength | 175 Pounds Per Square Inch |
| Unit Count | 100 Milliliters |
| Viscosity Level | High |
| Volume | 1200 Milliliters |
| Water Resistance Level | Not Water Resistant |
User
The best leak prevention on swimming pool fittings
Having tried using Loctite 55 on a swimming pool MPV and having the valve still leak at the threaded joints, I opted to try out this liquid sealant.I put the liquid on both the make and female joints and easily screwed them in by hand. I waited 24hr before I turned on the pump & when I did, there were no leaks from any of the joints. I’ve bought another tube as backup, I’ll be using this stuff instead of PTFE Tape and silicone from now on.
User
Parfait
Livraison et produit parfait
User
Recieved ONLY 2 tubes!
Only received 2 tubes! Make this right and ill order more and update this rating.
User
Semplice da usare
Ottimo e semplice da usare
User
Misleading information
Leverancier heeft in de omschrijving 12x100ml staan, echter ze sturen er maar één op. Prijs is daarom te hoog, als je met de leverancier in discussie gaat over deze omschrijving geven ze de opmerkingen "je hebt er maar één besteld*, bij andere leveranciers betaal je maar €22 voor één tube. Hier dus niet kopen!
Trustpilot
2 months ago
5 days ago