---
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: "€ 9.40"
currency: EUR
in_stock: true
reviews_count: 13
category: "Rectorseal"
url: https://www.desertcart.gr/products/7377243-no-5-25790-pipe-thread-sealant-lubricates-and-protects-threads
store_origin: GR
region: Greece
---

# Waterproof & metal-free sealant Compatible with 8+ pipe materials Soft-setting, slow-dry formula 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:** € 9.40
**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?** € 9.40 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/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

- • **Instant Pressure Ready:** Safe for immediate pressurization on natural gas and water lines up to 2" and 100 psi—no waiting required.
- • **Trusted Industry Standard:** Preferred by pros and DIYers alike, delivering reliable, long-lasting thread protection since 2005.
- • **Universal Pipe Compatibility:** Works seamlessly on galvanized steel, brass, copper, stainless steel, PVC, and more—excluding ABS/CPVC.
- • **Lead-Free & Metal-Free Formula:** Protects potable water systems with a non-toxic, environmentally conscious sealant.
- • **Effortless Application & Breakout:** Soft-setting, slow-drying compound ensures smooth thread lubrication and easy disassembly without damage.

## Overview

RectorSeal No. 5 is a premium, soft-setting, slow-drying pipe thread sealant designed for professional-grade sealing, lubrication, and protection of threaded pipe connections. Its metal-free, lead-free formula is compatible with a wide range of pipe materials and allows immediate pressurization up to 100 psi on natural gas and water lines. Trusted since 2005, it ensures easy application and breakout without thread damage, making it the go-to sealant for HVAC, plumbing, and construction pros.

## 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: 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.
Review: Great product! - This was my first time using this product. It does exactly what it is supposed to do and works very well. Very easy to use. Great product in my opinion and great value. I highly recommend this product not only for professionals but also for DIYers such as myself! The sealant quality is top notch.

## 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 | #1,954 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 (3,015) |
| 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

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Great product!
*by Z***9 on October 7, 2025*

This was my first time using this product. It does exactly what it is supposed to do and works very well. Very easy to use. Great product in my opinion and great value. I highly recommend this product not only for professionals but also for DIYers such as myself! The sealant quality is top notch.

### ⭐⭐⭐⭐⭐ Best Pipe Sealer
*by A***K on January 14, 2026*

When working with water pipes, put a few wraps of Teflon tape, then smother with this sealant. No leaks for 30+ years. Great for outdoor faucets as well

## 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 Greece*
*Store origin: GR*
*Last updated: 2026-01-26*