---
product_id: 45059808
title: "577 Thread Sealant 50 mL Tube"
brand: "loctite"
price: "RM131"
currency: MYR
in_stock: true
reviews_count: 8
category: "Loctite"
url: https://www.desertcart.com.my/products/45059808-577-thread-sealant-50-ml-tube
store_origin: MY
region: Malaysia
---

# Instant low-pressure sealing Medium-strength sealant for metal threads Fast application at low temperatures 577 Thread Sealant 50 mL Tube

**Brand:** loctite
**Price:** RM131
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal it fast, seal it right — don’t let leaks slow your flow!

## Quick Answers

- **What is this?** 577 Thread Sealant 50 mL Tube by loctite
- **How much does it cost?** RM131 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/45059808-577-thread-sealant-50-ml-tube)

## 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

- • **No Primer Needed:** Cures on lightly contaminated surfaces, saving prep time and hassle
- • **Mess-Free Gel Formula:** Gel-like consistency prevents migration and ensures clean application
- • **Versatile Compatibility:** Works seamlessly on all metal types and thread styles
- • **Reliable Metal Thread Locking:** Seals and locks metal threads instantly for leak-proof confidence
- • **Temperature-Resilient Performance:** Maintains integrity even in cold, overhead, or chemically harsh environments

## Overview

Loctite 577 is a medium-strength, polymer-based thread sealant designed for metal pipes and fittings. It provides instant low-pressure sealing and locking, cures without a primer on lightly contaminated surfaces, and offers excellent chemical and thermal resistance. Its gel-like formula minimizes migration, making it ideal for fast, clean applications even at low temperatures.

## Description

Medium-strength, general purpose thread sealant for straight/straight and straight/taper threads and fittings. Fills the space between threaded parts and seals and locks at the same time. Loctite 577 thread sealant is a medium-strength, general purpose thread sealant for straight/straight and taper/straight threads and fittings. Great for overhead applications and fast application at low temperatures. Excellent chemical and thermal resistance; gel-like form results in less migration of product after application. Loctite 577 is designed for the locking and sealing of metal pipes and fittings as well as other threaded assemblies. The product provides an instant, low-pressure seal for metal pipes and fittings. It will not creep, shrink or shred. Suitable for fast application at low temperatures. Cures on lightly contaminated surfaces and does not require a primer on inactive metals. It has excellent chemical and thermal resistance and offers less migration of liquid product after application to the part.

Review: Loctite 577 - Works as it should. New in tube, known quality, super fast shipping!
Review: Thread sealer - Great product works as describe

## Features

- General purpose, medium strength liquid thread sealant for sealing metal threads
- Suitable for all metals types
- Instant low pressure seal
- Item Package Dimension: 5.0" L x 3.0" W x 1.0" H

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01LPJ3LIM |
| Best Sellers Rank | #39,476 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #48 in Industrial Thread Sealants |
| Brand | Loctite |
| Brand Name | Loctite |
| Color | Yellow |
| Compatible Material | Metal |
| Customer Reviews | 4.6 out of 5 stars 126 Reviews |
| Included Components | Loctite 577 - General purpose thread sealant for metal pipes and fittings: 50 ml |
| Item Dimensions | 1 x 1 x 1 inches |
| Item Form | Gel, Liquid |
| Item Weight | 1.04 ounces |
| Item dimensions L x W x H | 1 x 1 x 1 inches |
| Manufacturer | Loctite |
| Material | Polymer-based material |
| Material Type | Polymer-based material |
| Style | Compact |
| Style Name | Compact |
| Supported Standards | NSF |
| Surface Recommendation | Metal |
| UPC | 079340010475 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Loctite
- **Item Weight:** 1.04 ounces
- **Item dimensions L x W x H:** 1 x 1 x 1 inches
- **Material:** Polymer-based material
- **Style:** Compact

## Images

![577 Thread Sealant 50 mL Tube - Image 1](https://m.media-amazon.com/images/I/51xZil+WyrL.jpg)

## Questions & Answers

**Q: Can this be used on natural gas grill orifices?**
A: No. Heat is used to loosen this sealant. Use pipe dope.

**Q: Is this compatible with propane lines?**
A: It should be I never used it 
I did used it on auto gas systems which are a propane mix

**Q: Would I need to use the 7649 primer if I was screwing a brass fitting (active metal) into a stainless steel (inactive metal)?**
A: Actually I would recommend anti-seize compound.  This will lock the thread where anti-seize will prevent reaction between dissimilar metals

## Customer Reviews

### ⭐⭐⭐⭐⭐ Loctite 577
*by A***. on November 12, 2025*

Works as it should. New in tube, known quality, super fast shipping!

### ⭐⭐⭐⭐⭐ Thread sealer
*by V***. on November 5, 2025*

Great product works as describe

### ⭐⭐⭐⭐⭐ Works great on PVC, SS, and Brass
*by M***K on October 27, 2023*

You have to shake it a lot to mix it if it's been sitting at all. I keep it in the refrigerator hoping that will preserve its shelf life which isn't listed as that long for a non-professional. I usually use teflon tape or the liquid teflon even more. However, you still need to max torque on the fittings and some of the Chinese SS & Brass fittings still leak. If you've got elbows or tees that need a particular alignment, best fitting torque often puts me 180-270 deg. out of alignment. This stuff works great to seal (I was using less than 80 psi) water fittings with a mild snug fit and yet without excess force, is removable. Leaves a lot to clean up on the threads but an easy job. Now my go-to sealant for pipe threads I would typically glue or solder or epoxy. Hope it stores well in the refrig.

## Frequently Bought Together

- 577 Thread Sealant 50 mL Tube
- Loctite 2087067 567 Thread Sealant 50 mL Tube, White (Pack of 1)
- Loctite 1329467 243 Blue Medium Strength Threadlockers, 1.69 Ounces, 50 mL, 3/4" Thread

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-03-02*