---
product_id: 395204747
title: "SI 5331, Liquid Thread Sealant for Pipes, Silicone Sealer for Cold and Hot Water Carrying Plastic and Metal Pipes, Vibration Resistant Silicone Sealant, 12x100ml"
brand: "loctite"
price: "₨81903"
currency: LKR
in_stock: true
category: "Loctite"
url: https://www.desertcart.lk/products/395204747-si-5331-liquid-thread-sealant-for-pipes-silicone-sealer-cold
store_origin: LK
region: Sri Lanka
---

# Vibration resistant secure hold 12x100ml tubes - industrial volume Temp resistant -50 to +150°C SI 5331, Liquid Thread Sealant for Pipes, Silicone Sealer for Cold and Hot Water Carrying Plastic and Metal Pipes, Vibration Resistant Silicone Sealant, 12x100ml

**Brand:** loctite
**Price:** ₨81903
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal it once, secure it forever — the pro’s choice for leak-proof pipes!

## Quick Answers

- **What is this?** SI 5331, Liquid Thread Sealant for Pipes, Silicone Sealer for Cold and Hot Water Carrying Plastic and Metal Pipes, Vibration Resistant Silicone Sealant, 12x100ml by loctite
- **How much does it cost?** ₨81903 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/395204747-si-5331-liquid-thread-sealant-for-pipes-silicone-sealer-cold)

## Best For

- loctite enthusiasts

## Why This Product

- Trusted loctite brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Permanently Elastic Seal:** Cures via humidity to maintain a flexible, low-strength gasket that lasts.
- • **Universal Thread Sealant:** Perfectly seals plastic & metal pipe threads for hot & cold water systems.
- • **Certified for Drinking Water:** WRAS, DVGW & NSF P1 approvals guarantee safe use in potable water systems.
- • **Ready-to-Use Industrial Pack:** Single-component paste in 12 convenient 100ml tubes for professional reliability.
- • **Vibration-Resistant Security:** Ensures leak-proof connections even under constant vibration stress.

## Overview

LOCTITE SI 5331 is a high-performance silicone thread sealant designed for industrial use on plastic and metal water pipes. It forms a durable, vibration-resistant, and permanently elastic seal effective from -50°C to 150°C. Certified safe for drinking water systems, it comes in a convenient 12-pack of 100ml tubes, curing fully in 96 hours to ensure leak-proof, secure connections in plumbing, agriculture, and wastewater applications.

## Description

LOCTITE SI 5331 - Thread sealant for plastic pipingLoctite SI 5331 is ideal as a thread sealant for various forms of water pipe insulation. The universal thread sealant is gel and can be used to seal hot and cold water-bearing plastic and metal threads and fittings, e.g. to secure plastic pipelines in industrial, agricultural or sewage systems. The sealant is single-component, so no mixing is necessary. It cures through humidity exposure at ambient temperatures to form a low-strength, permanently elastic seal which is effective against both cold and hot water. The low strength of the gasket is maintained at temperatures up to 150°C. In addition, the joints are protected against vibration loads. Based on acetoxy silicone, the silicone is white and has a paste-like consistency. LOCTITE SI 5331 is approved for use in drinking water systems*, DGVW approved** and NSF category P1 approved*** for use as a food processing sealant in areas where contact with food is not possible.Apply the sealant to the desired threaded parts (the parts may be as supplied or cleaned with a damp cloth or paper towel before application). The product should be applied to both male and female threads. To ensure an even distribution, brush down to the base of the thread. For use in drinking water installations, allow thread sealant to cure for 96 hours at 20 to 23°C before use.The Product Benefits at a Glance:Sealant for sealing threadsIdeal for plastic pipingFor metal, plastic or bothTemperature resistant from -50 to +150°COne-component & low strengthVibration resistantColour: WhiteFormat: 12x100ml tube*WRAS approval (BS 6920) for drinking water: 0706521**DVGW approval, tested according to EN 751-1***P1 NSF Reg. No.: 123620

## Features

- Universally applicable - The water pipe sealant is ideal for hot and cold water-bearing plastic threads or plastic/metal combinations, e.g. in industrial installations
- Low-strength thread sealant - The piping sealant hardens via air humidity to form a permanently elastic seal. This seals effectively against both cold and hot water
- Secure connections - The connections made with the thread seal are secured and resistant to vibration loads for a secure hold of the threads in plumbing fittings
- Securing and sealing - The piping thread leak sealer is ideal for securing and sealing plastic piping and pipelines in industry, agriculture or wastewater systems
- Package contents - LOCTITE SI 5331, only for industrial usage, plumbing thread sealant based on acetoxy silicone, one-component sealant, paste-like consistency, white, 12x100ml tube

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0052EGAXK |
| Best Sellers Rank | #87,482 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #498 in Hardware Sealers |
| Brand Name | LOCTITE |
| Color | White |
| Compatible Material | Metal |
| Container Type | Tube |
| Customer Reviews | 4.5 4.5 out of 5 stars (259) |
| 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 | 0.22 Pounds |
| 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 | 100 Milliliters |
| Water Resistance Level | Not Water Resistant |

## Product Details

- **Brand:** LOCTITE
- **Item form:** Paste
- **Material:** Metal,Plastic,Silicone
- **Special features:** Strong
- **Specific uses for product:** Craft

## Images

![SI 5331, Liquid Thread Sealant for Pipes, Silicone Sealer for Cold and Hot Water Carrying Plastic and Metal Pipes, Vibration Resistant Silicone Sealant, 12x100ml - Image 1](https://m.media-amazon.com/images/I/61jOKpRl5KS.jpg)

## Frequently Bought Together

- LOCTITE SI 5331, Liquid Thread Sealant for Pipes, Silicone Sealer for Cold and Hot Water Carrying Plastic and Metal Pipes, Vibration Resistant Silicone Sealant, 12x100ml
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- LOCTITE 577, Medium Strength Industrial Adhesive for Thread Sealing, Universal Liquid Adhesive for Pipes and Metal Threads, Chemically Resistant Thread Sealant, 50ml

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-09-21*