---
product_id: 19637914
title: "RectorSeal Tru-Blu 31780 Pipe Thread Sealant, Fast-Dry, Flexible Set Thread Sealant Designed for High Vibration Environments, PTFE Enriched, Plumbing, 1 3/4 oz"
brand: "rectorseal"
price: "€ 12.28"
currency: EUR
in_stock: true
reviews_count: 13
category: "Rectorseal"
url: https://www.desertcart.fi/products/19637914-rectorseal-tru-blu-31780-pipe-thread-sealant-fast-dry-flexible
store_origin: FI
region: Finland
---

# Safe for potable water, lead-free & low odor Flexible set ideal for high vibration & thermal shifts Fast-dry formula for quick project turnaround RectorSeal Tru-Blu 31780 Pipe Thread Sealant, Fast-Dry, Flexible Set Thread Sealant Designed for High Vibration Environments, PTFE Enriched, Plumbing, 1 3/4 oz

**Brand:** rectorseal
**Price:** € 12.28
**Availability:** ✅ In Stock

## Summary

> 🔵 Seal Smart, Work Fast, Stay Leak-Free!

## Quick Answers

- **What is this?** RectorSeal Tru-Blu 31780 Pipe Thread Sealant, Fast-Dry, Flexible Set Thread Sealant Designed for High Vibration Environments, PTFE Enriched, Plumbing, 1 3/4 oz by rectorseal
- **How much does it cost?** € 12.28 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/19637914-rectorseal-tru-blu-31780-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

- • **Speed Meets Precision:** Fast-drying PTFE-enriched sealant accelerates your workflow without compromising reliability.
- • **Trade-Trusted Quality:** Preferred by HVAC, plumbing, and construction pros for dependable, long-lasting performance.
- • **Clean & Safe Application:** Low odor, lead-free, and metal-free formula ensures a safe, hassle-free job site experience.
- • **Built to Flex Under Pressure:** Maintains a flexible seal in high vibration and thermal expansion environments—no cracks, no leaks.
- • **Universal Pipe Compatibility:** Seals galvanized steel, brass, copper, PVC, and more—one product for all your plumbing needs.

## Overview

RectorSeal Tru-Blu 31780 is a fast-drying, PTFE-enriched pipe thread sealant designed for professional plumbers and tradespeople. It delivers a flexible, durable seal that withstands high vibration and thermal expansion, compatible with a wide range of pipe materials including metals and plastics. Lead-free and low odor, it’s ideal for potable water systems and industrial applications, making it a trusted choice for reliable, leak-proof 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: Big blue - Great product and value
Review: Reliable sealant for plumbing — no leaks, no fuss! - I used the RectorSeal 31780 Tru-Blu Pipe Thread Sealant when replacing a shower faucet and bathroom sink, and it worked perfectly. The sealant applied smoothly, sealed tight, and I haven’t had any leaks since. It’s great that it works on different materials and stays flexible with temperature changes, which is important in plumbing setups. Easy to use and clean up, too. If you want a dependable thread sealant for your bathroom or plumbing projects, this is a solid choice!

## Features

- STAYS FLEXIBLE: RectorSeal tru-blu pipe sealant is designed for plumbers and home improvement professionals to use in areas of high vibration and thermal expansion/contraction
- FAST-DRYING: 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
- POTABLE WATER SEALANT: Tru-Blu pipe dope thread sealant lubricates and protects pipe threads; lead free and contains no metal; low odor and non- seperating
- PIPE COMPATIBILITY: 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004QXT134 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #9,888 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #21 in Industrial Thread Sealants |
| Color | Blue |
| Customer Reviews | 4.6 4.6 out of 5 stars (306) |
| Date First Available | October 25, 2011 |
| Included Components | 1 Container of Tru-Blu |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 0.8 ounces |
| Item model number | 31780 |
| Manufacturer | The Rectorseal Corporation |
| Material | Sealant Material (e.g., Polytetrafluoroethylene, Synthetic Rubber) |
| Part Number | 31780 |
| Product Dimensions | 1.5 x 1.5 x 5.5 inches |
| Size | Blue |
| Style | Pipe Thread Sealant |
| Warranty Description | Warranty |

## Product Details

- **Material:** Sealant Material (e.g., Polytetrafluoroethylene, Synthetic Rubber)
- **Brand:** Rectorseal
- **Style:** Pipe Thread Sealant
- **Item Weight:** 0.8 Ounces
- **Item dimensions L x W x H:** 1.5 x 1.5 x 5.5 inches

## Images

![RectorSeal Tru-Blu 31780 Pipe Thread Sealant, Fast-Dry, Flexible Set Thread Sealant Designed for High Vibration Environments, PTFE Enriched, Plumbing, 1 3/4 oz - Image 1](https://m.media-amazon.com/images/I/51Ne+q1aA1L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Big blue
*by A***R on November 1, 2025*

Great product and value

### ⭐⭐⭐⭐⭐ Reliable sealant for plumbing — no leaks, no fuss!
*by B***. on June 24, 2025*

I used the RectorSeal 31780 Tru-Blu Pipe Thread Sealant when replacing a shower faucet and bathroom sink, and it worked perfectly. The sealant applied smoothly, sealed tight, and I haven’t had any leaks since. It’s great that it works on different materials and stays flexible with temperature changes, which is important in plumbing setups. Easy to use and clean up, too. If you want a dependable thread sealant for your bathroom or plumbing projects, this is a solid choice!

### ⭐⭐⭐⭐⭐ Pipe Sealant
*by J***D on November 14, 2025*

This product works great. Water tight seal, especially good for dissimilar materials.

## Frequently Bought Together

- Rectorseal 31780 1-3/4-Ounce Tube Tru-Blu Pipe Thread Sealant , Blue
- Rectorseal 25790 1-3/4-Ounce Tube No.5 Pipe Thread Sealant
- Dixon Valve TTB75 PTFE Industrial Sealant Tape, -212 to 500 Degree F Temperature Range, 3.5mil Thick, 520" Length, 3/4" Width, White

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**Shop now:** [https://www.desertcart.fi/products/19637914-rectorseal-tru-blu-31780-pipe-thread-sealant-fast-dry-flexible](https://www.desertcart.fi/products/19637914-rectorseal-tru-blu-31780-pipe-thread-sealant-fast-dry-flexible)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-06*