---
product_id: 45059808
title: "577 Thread Sealant 50 mL Tube"
price: "€ 34.08"
currency: EUR
in_stock: true
url: https://www.desertcart.at/products/45059808-577-thread-sealant-50-ml-tube
store_origin: AT
region: Austria
---

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

**Price:** € 34.08
**Availability:** ✅ In Stock

## Summary

> 🔩 Seal it right, seal it tight — your pipes’ new best friend!

## Quick Answers

- **What is this?** 577 Thread Sealant 50 mL Tube
- **How much does it cost?** € 34.08 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/45059808-577-thread-sealant-50-ml-tube)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Fast, Instant Seal:** Achieve a low-pressure seal immediately, minimizing downtime and boosting efficiency.
- • **Chemical & Thermal Resistance:** Gel-like formula resists chemical exposure and heat, ensuring long-term reliability.
- • **Reliable Metal Thread Locking:** Seals and locks metal pipes and fittings with medium strength for lasting durability.
- • **Versatile Temperature Performance:** Works flawlessly even in cold environments, perfect for all-season projects.
- • **No Primer Needed on Inactive Metals:** Simplifies application with curing on lightly contaminated surfaces, saving prep time.

## Overview

Loctite 577 Thread Sealant is a medium-strength, general-purpose liquid designed to seal and lock metal threaded fittings instantly at low pressure. Its gel-like formula offers excellent chemical and thermal resistance, cures without primer on inactive metals, and performs reliably even at low temperatures, making it ideal for professional-grade plumbing and mechanical applications.

## 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.

## 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 |
|---------------|-------|
| Customer Reviews | 4.6 out of 5 stars 143 Reviews |

## Product Details

- **Brand:** Loctite
- **Item Weight:** 0.07 Pounds
- **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/31GlweUnD+L.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

## 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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**Shop now:** [https://www.desertcart.at/products/45059808-577-thread-sealant-50-ml-tube](https://www.desertcart.at/products/45059808-577-thread-sealant-50-ml-tube)

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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-10-08*