---
product_id: 14156077
title: "RectorSeal Tru-Blu 31551 Pipe Thread Sealant, Fast-Dry, Flexible Set Thread Sealant Designed for High Vibration Environments, PTFE Enriched, Plumbing, 1/2 Pint"
brand: "rectorseal"
price: "€ 34.16"
currency: EUR
in_stock: true
reviews_count: 13
category: "Rectorseal"
url: https://www.desertcart.nl/products/14156077-rectorseal-tru-blu-31551-pipe-thread-sealant-fast-dry-flexible
store_origin: NL
region: Netherlands
---

# Fast-dry formula Flexible set for high vibration PTFE enriched for superior thread protection RectorSeal Tru-Blu 31551 Pipe Thread Sealant, Fast-Dry, Flexible Set Thread Sealant Designed for High Vibration Environments, PTFE Enriched, Plumbing, 1/2 Pint

**Brand:** rectorseal
**Price:** € 34.16
**Availability:** ✅ In Stock

## Summary

> 🔵 Seal like a pro, last like a legend!

## Quick Answers

- **What is this?** RectorSeal Tru-Blu 31551 Pipe Thread Sealant, Fast-Dry, Flexible Set Thread Sealant Designed for High Vibration Environments, PTFE Enriched, Plumbing, 1/2 Pint by rectorseal
- **How much does it cost?** € 34.16 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/14156077-rectorseal-tru-blu-31551-pipe-thread-sealant-fast-dry-flexible)

## 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

- • **Rapid Drying Power:** Get your projects moving faster with a sealant that sets quickly without compromising strength.
- • **Universal Compatibility:** Works flawlessly on galvanized steel, brass, copper, PVC, and more—one sealant for all your pipes.
- • **Lead-Free & Metal-Free Safety:** Protect your health and the environment with a non-toxic, metal-free formula trusted by pros.
- • **Smooth Application & Adjustment:** Lubricates threads for easy assembly and allows fine-tuning after application—no more guesswork.
- • **Vibration-Resistant Flexibility:** Engineered to maintain a secure seal even in the most demanding, high-vibration environments.

## Overview

RectorSeal Tru-Blu 31551 is a fast-drying, PTFE-enriched pipe thread sealant designed for professional plumbers and tradespeople. Made in the USA, it offers flexible, vibration-resistant sealing across a wide range of pipe materials, ensuring leak-proof joints in industrial, HVAC, and home improvement applications. Its lead-free, metal-free formula lubricates threads for easy installation and adjustment, making it a trusted choice for durable, reliable plumbing solutions.

## Description

Product Description RectorSeal Tru-Blu pipe sealant is designed for plumbers and home improvement professionals to use in areas of high vibration and thermal expansion/contraction. Our pipe thread sealant with PTFE is a fast-dry, flexible set thread sealant that is ideal for home improvement, plumbing and industrial applications; excellent as a gasket adhesive on flanges. Tru-Blu pipe dope thread sealant lubricates and protects pipe threads; lead free and contains no metal. For pipe made of galvanized steel, iron, brass, copper, aluminum, stainless steel, PVC, CPVC, polyethylene, and reinforced fiberglass. 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 From the Manufacturer RectorSeal Tru-Blu pipe thread sealant with PTFE is a fast-dry, flexible set thread sealant designed for high vibration environments such as refrigeration and industrial applications.

Review: Seals threads like it should - Works great. Seals like it should. Easy to apply, and enough for lots of fittings. I got tired of finding shreds of Teflon tape clogging orifices, so went back to paste sealant. It doesn't dry out, and allows some adjustment of the fitting after assembly, while lubing and sealing the threads.
Review: Incredible - I have been in the water system business for 18 years and have used Teflon tape, Megaloc, and StickTite paste. I have found Megaloc to be the best. It’s always been my sure thing with Teflon tape on difficult joints, but I finally ran into one that my tried and true failed me for the first time. It was a 1-1/4” size and I was screwing brass into a plastic filter housing. I tried 3 times with Megaloc and a couple times with StickTite plumber paste and even gave it time to dry. To my surprise each attempt failed. I have never used True Blue since I have been loyal to Megaloc since it’s never failed me until now. I ordered this stuff and gave it a try. It worked on the first attempt. I put True Blue in the threads and on the threads of the male and let it try for almost 24 hrs. No leaks several days later. I’m convinced and will be using it from here on.

## Features

- Adhesives & Sealants
- Country of manufacture: United States
- Manufacturer: Rectorseal
- The item is manufactured in United states

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002BY02PQ |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #26,218 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #36 in Industrial Thread Sealants |
| Color | Blue |
| Customer Reviews | 4.6 4.6 out of 5 stars (364) |
| Date First Available | June 19, 2009 |
| Included Components | Unit^Instruction Guide |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.16 ounces |
| Item model number | 31551 |
| Manufacturer | The Rectorseal Corporation |
| Material | Plastic |
| Part Number | 31551 |
| Product Dimensions | 2.5 x 2.5 x 3.6 inches |
| Size | 8 Oz. |
| Style | Industrial |
| Warranty Description | Manufacturer |

## Images

![RectorSeal Tru-Blu 31551 Pipe Thread Sealant, Fast-Dry, Flexible Set Thread Sealant Designed for High Vibration Environments, PTFE Enriched, Plumbing, 1/2 Pint - Image 1](https://m.media-amazon.com/images/I/61QdEY+WU2L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Seals threads like it should
*by Q***E on August 1, 2025*

Works great. Seals like it should. Easy to apply, and enough for lots of fittings. I got tired of finding shreds of Teflon tape clogging orifices, so went back to paste sealant. It doesn't dry out, and allows some adjustment of the fitting after assembly, while lubing and sealing the threads.

### ⭐⭐⭐⭐⭐ Incredible
*by J***R on March 14, 2023*

I have been in the water system business for 18 years and have used Teflon tape, Megaloc, and StickTite paste. I have found Megaloc to be the best. It’s always been my sure thing with Teflon tape on difficult joints, but I finally ran into one that my tried and true failed me for the first time. It was a 1-1/4” size and I was screwing brass into a plastic filter housing. I tried 3 times with Megaloc and a couple times with StickTite plumber paste and even gave it time to dry. To my surprise each attempt failed. I have never used True Blue since I have been loyal to Megaloc since it’s never failed me until now. I ordered this stuff and gave it a try. It worked on the first attempt. I put True Blue in the threads and on the threads of the male and let it try for almost 24 hrs. No leaks several days later. I’m convinced and will be using it from here on.

### ⭐⭐⭐⭐⭐ sticks well on pvc pipe thread
*by D***E on December 31, 2024*

great product seals pvc thread no leaks

## Frequently Bought Together

- Rectorseal 31551 1/2 Pint Brush Top Tru-Blu Pipe Thread Sealant , Blue, 8 Oz.
- Milrose 70885 Blue Monster 1/2 Inch x 1429 Inch Blue Teflon Tape (3 Pack)
- Rectorseal 31631 1/4 Pint Brush Top Tru-Blu Pipe Thread Sealant , Blue

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-23*