---
product_id: 7377243
title: "No. 5 25790 Pipe Thread Sealant, Lubricates & Protects Threads, Soft Setting, Slow Drying, & Permits Easy Breakout and Contains No Other Metals, 1.75 oz"
brand: "rectorseal"
price: "₨3273"
currency: LKR
in_stock: true
reviews_count: 13
category: "Rectorseal"
url: https://www.desertcart.lk/products/7377243-no-5-25790-pipe-thread-sealant-lubricates-and-protects-threads
store_origin: LK
region: Sri Lanka
---

# Waterproof & potable safe Compatible with 8+ pipe materials Soft-setting, slow drying No. 5 25790 Pipe Thread Sealant, Lubricates & Protects Threads, Soft Setting, Slow Drying, & Permits Easy Breakout and Contains No Other Metals, 1.75 oz

**Brand:** rectorseal
**Price:** ₨3273
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal it right, seal it tight — the pro’s choice for flawless pipe threads!

## Quick Answers

- **What is this?** No. 5 25790 Pipe Thread Sealant, Lubricates & Protects Threads, Soft Setting, Slow Drying, & Permits Easy Breakout and Contains No Other Metals, 1.75 oz by rectorseal
- **How much does it cost?** ₨3273 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/7377243-no-5-25790-pipe-thread-sealant-lubricates-and-protects-threads)

## Best For

- rectorseal enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Industry Standard:** A go-to sealant for pros since 2005, delivering leak-proof reliability every time.
- • **Universal Pipe Compatibility:** Works seamlessly on galvanized steel, brass, copper, aluminum, stainless steel, PVC & more.
- • **Immediate Pressurization Ready:** Safe for natural gas and water lines up to 2" and 100 psi—no wait time needed.
- • **Metal-Free & Lead-Free Formula:** Protects your pipes and the environment with a clean, inert base—no metals involved.
- • **Effortless Application & Breakout:** Soft-set formula lubricates threads for easy assembly and damage-free disassembly.

## Overview

RectorSeal No. 5 is a premium, non-hardening pipe thread sealant designed for professional tradesmen. Its soft-setting, slow-drying formula lubricates and protects threaded connections across a wide range of pipe materials, including potable water lines. Metal and lead-free, it allows immediate pressurization up to 2" pipes at 100 psi, ensuring leak-proof joints without thread damage or galling. Trusted since 2005, it’s the industry standard for reliable, easy-to-use pipe sealing.

## Description

Product Description RectorSeal No.5 is a non-hardening, slow-drying thread sealant made from special inert fillers dispersed in an oleoresinous base to facilitate its application to threaded pipe connections. Our pipe thread sealant is a soft-set, slow drying compound which seals, lubricates, and protects threaded pipe and fittings. Rectorseal No.5 pipe dope thread sealant lubricates and protects pipe threads. Lead free and contains no metal. Permits easy break out with no damage to threads. For pipe made of galvanized steel, iron, brass, copper, aluminum, stainless steel, polyethylene, reinforced fiberglass, and PVC. DO NOT USE ON ABS OR CPVC. For natural gas and water lines up to 2" and pressure up to 100 psi, the piping system may be placed into immediate service; other services are recommended 24 hours after application. From the Manufacturer RectorSeal No. 5 pipe thread sealant is a soft-set, slow drying compound which seals, lubricates, and protects threaded pipe and fittings. It can be pressurized immediately for piping up through 2-Inch and 100 psi(for natural gas, air and water only) and is ideal for application with a wide variety of fluids and gases, including potable water applications.

Review: Works well - Works well on my pipe. Great sealant and holds the pipes well without leaks
Review: Old Reliable - I’m going to have to put in a water heater and this is my favorite for such use. I left my other tube at another house, and I’m really not going back for it.

## Features

- APPLICATION: RectorSeal No.5 is a non-hardening, slow-drying thread sealant made from special inert fillers dispersed in an oleoresinous base to facilitate its application to threaded pipe connections
- SOFT SETTING: Our pipe thread sealant is a soft-set, slow drying compound which seals, lubricates, and protects threaded pipe and fittings and will not dry out in the container
- POTABLE WATER SEALANT: RectorSeal No.5 pipe dope thread sealant lubricates and protects pipe threads; contains no metal; permits easy break out with no damage to threads
- PIPE COMPATIBILITY: For pipe made of galvanized steel, iron, brass, copper, aluminum, stainless steel, polyethylene, reinforced fiberglass, and pvc. do not use on abs or cpvc; for natural gas and water lines up to 2" and pressure up to 100 psi, the piping system may be placed into immediate service; other services are recommended 24 hours after application
- FOR THE TRADESMAN: RectorSeal is recognized as a leading provider of quality solutions for the professional trades serving heating, ventilation, and air conditioning (HVAC/R), plumbing, electrical, and construction markets
- A soft setting, slow drying thread sealant
- It has withstood the test of time in a variety of uses and is widely known as the -Inchstandard of the industry-Inch
- Its low coefficient of friction allows tighter joint makeup with lower torque
- It also breaks out easily without galling, seizing, or damaging threads
- It is excellent for service where immediate pressurization is necessary

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0009PU9CK |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #1,907 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Industrial Thread Sealants |
| Brand | Rectorseal |
| Color | Yellow |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,044) |
| Date First Available | May 18, 2005 |
| EU Spare Part Availability Duration | 2 Years |
| Global Trade Identification Number | 00021449257909 |
| Included Components | Unit^Instruction Guide |
| Is Discontinued By Manufacturer | No |
| Item Form | Cream |
| Item Package Quantity | 1 |
| Item Weight | 1.6 ounces |
| Item dimensions L x W x H | 0.75 x 0.75 x 5.5 inches |
| Item model number | 25790 |
| Manufacturer | The Rectorseal Corporation |
| Material | Diacetone Alcohol |
| Number of Items | 1 |
| Part Number | 25790 |
| Product Dimensions | 0.75 x 0.75 x 5.5 inches |
| Size | 1.75 Oz |
| Special Features | Waterproof |
| Style | Squeeze tube |
| Surface Recommendation | Steel |
| UPC | 021449257909 |
| Unit Count | 1.75 Ounce |
| Warranty Description | Warranty |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Rectorseal
- **Item Weight:** 1.6 Ounces
- **Item dimensions L x W x H:** 0.75 x 0.75 x 5.5 inches
- **Material:** Diacetone Alcohol
- **Style:** Squeeze tube

## Images

![No. 5 25790 Pipe Thread Sealant, Lubricates & Protects Threads, Soft Setting, Slow Drying, & Permits Easy Breakout and Contains No Other Metals, 1.75 oz - Image 1](https://m.media-amazon.com/images/I/51hORK+XJBL.jpg)

## Questions & Answers

**Q: Is this recommended for gas fittings on my Blackstone Griddle?**
A: I would use this on propane gas connections

**Q: What’s the difference between application temp and performance temp? I’d need to use this for locking bolts that get up to 210 Fahrenheit.**
A: Yes that would be appropriate. It seals items that will get into the higher range of temps

**Q: when reapplying the same sealant, is it necessary to first clean off the sealant from last time?**
A: I would clean off the sealant before applying new just because the old sealant may have become contaminated.  If it has some grit in it, it could affect the seal.  Maybe overkill, but I don't like to second guess seals on propane lines.

**Q: With the sealant work for pool fittings that need to be removed and put back on your after year?**
A: No. :(

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well
*by E***L on January 20, 2026*

Works well on my pipe. Great sealant and holds the pipes well without leaks

### ⭐⭐⭐⭐⭐ Old Reliable
*by W***? on January 3, 2026*

I’m going to have to put in a water heater and this is my favorite for such use. I left my other tube at another house, and I’m really not going back for it.

### ⭐⭐⭐⭐⭐ No Issues
*by 6***O on January 27, 2026*

Does what a pipe thread sealant should do. Have not had any issues with leaks using this product.

## Frequently Bought Together

- Rectorseal 25790 1-3/4-Ounce Tube No.5 Pipe Thread Sealant
- Harvey 017065 Gas Line PTFE Thread Seal Tape

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-09*