---
product_id: 261383156
title: "LA-CO 42019 Slic-Tite Premium Thread Sealant Paste with PTFE, -50 to 500 Degree F Temperature, 1/2 pt Jar with Brush in Cap"
brand: "la-co"
price: "413 Lei"
currency: RON
in_stock: true
reviews_count: 5
category: "La Co"
url: https://www.desertcart.ro/products/261383156-la-co-42019-slic-tite-premium-thread-sealant-paste-ptfe
store_origin: RO
region: Romania
---

# Multi-material compatibility 1/2 pt jar with brush-in-cap Wide -50 to 500°F range LA-CO 42019 Slic-Tite Premium Thread Sealant Paste with PTFE, -50 to 500 Degree F Temperature, 1/2 pt Jar with Brush in Cap

**Brand:** la-co
**Price:** 413 Lei
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal smarter, not harder — the pro’s choice for leak-free confidence!

## Quick Answers

- **What is this?** LA-CO 42019 Slic-Tite Premium Thread Sealant Paste with PTFE, -50 to 500 Degree F Temperature, 1/2 pt Jar with Brush in Cap by la-co
- **How much does it cost?** 413 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/261383156-la-co-42019-slic-tite-premium-thread-sealant-paste-ptfe)

## Best For

- la-co enthusiasts

## Why This Product

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

## Key Features

- • **Clean & Safe:** Non-toxic, non-drying paste that washes off hands and clothes effortlessly—no mess, no stress.
- • **Seal Like a Pro:** Premium PTFE formula ensures leak-proof joints on metal, PVC, CPVC, and ABS threads.
- • **Temperature Tough:** Operates flawlessly from freezing -50°F to scorching 500°F environments.
- • **Versatile Sealant:** Perfect for water, air, steam, natural gas, LP gas, refrigerants, ammonia, gasoline, ethanol, and oil.
- • **Built to Last & Reuse:** Lubricates fittings for easy tightening and future disassembly—trusted by pros for decades.

## Overview

LA-CO 42019 Slic-Tite Premium Thread Sealant Paste is a USDA-authorized, heavy-duty PTFE-based compound designed for sealing a wide range of pipe threads including metal and plastics. It withstands extreme temperatures from -50°F to 500°F and is safe, non-toxic, and easy to clean off. Ideal for plumbing, gas, and industrial applications, it offers reliable, long-lasting seals with effortless application and removal.

## Description

MKL42019 Features: -MARKAL. -Heavy-duty thread sealing compound.Authorized by USDA for use in federally inspected meat and poultry plants.Washes off hands and clothing easily.. -No Shipment By Air. -UNSPC CODE: 23171500. Product Type: -Thread Sealants.

Review: This stuff works great for ceiling pipe threads. I like to put this on my threads and then a little bit of Teflon tape over top of it or vice versa. Definitely worth the money. Great seal, easy to use, and easily removed with a towel.
Review: I've been using laco for 50 years of my life in the plumbing and gas fitting trade. High end restaurants,it seals the threads and has lubricant abilities which allows the fitting to tighten even better. Best part is years later when undoing fittings they come right apart. If I could give it 10 stars I would. Retired 4 years ago and yep got a bottle in my tool bag. Very easy to use and any excess wipes right off...

## Features

- Use on metal, PVC, CPVC and ABS plastic pipe threads
- For sealing water, air, steam, natural gas, LP gas, refrigerants, ammonia, gasoline, ethanol and oil
- Washes off hands and clothing easily
- Non-toxic, non-drying

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002KGIGDA |
| ASIN  | B002KGIGDA |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #120,508 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #610 in Hardware Sealers |
| Customer Reviews | 4.6 4.6 out of 5 stars (219) |
| Customer reviews | 4.6 4.6 out of 5 stars (219) |
| Date First Available | 21 July 2014 |
| Date First Available  | 21 July 2014 |
| Item Package Quantity | 1 |
| Item Weight | 380 g |
| Item model number | 42019 |
| Item model number  | 42019 |
| Manufacturer | LA-CO Markal |
| Manufacturer  | LA-CO Markal |
| Material | Polytetrafluoroethylene |
| Part number | 42019 |
| Size | 1/2 pt B-N-C |
| Style | Brush in Cap Jar |
| Temperature Range | -50/500 Degrees Fahrenheit |

## Product Details

- **Brand:** LA-CO
- **Item form:** Paste
- **Material:** Polytetrafluoroethylene
- **Style:** Brush in Cap Jar
- **Water resistance level:** Water Resistant

## Images

![LA-CO 42019 Slic-Tite Premium Thread Sealant Paste with PTFE, -50 to 500 Degree F Temperature, 1/2 pt Jar with Brush in Cap - Image 1](https://m.media-amazon.com/images/I/81-B09JAZWL.jpg)

## Questions & Answers

**Q: My pvc sewer pipe threaded access point is leaking. will using this seal off the access point indefinitely or still allow access?**
A: It won't glue it tight but seal the threads from leaking! You can unscrew it off and on anytime but might need to add some off n on! Good stuff!

**Q: Would this be good to utilize on an oil drain plug before reinstalling during automotive oil changes?**
A: I wouldn't recommend that. This has bits of Teflon and they could get into the oil filter and clog it. Drain plugs are designed to have a gasket and not seal at the threads.  I would search for a new drain plug on Amazon for your car.

**Q: How to revive old dried out slic-tite, is it water soluble?**
A: Hello, This is not water soluble product.  This is actually an oil/grease-based material.  You can try a little ethanol.  However, you should only try a little bit.  Adding too much will likely have a negative impact on the performance of the product.
Best Regards,
LA-CO team

**Q: Can someone check the back label, does it have ingredients list? Specifically, would like to know if there is silicone in it.**
A: No ingredients list. Does not specify anything besides containing PTFE. SDS mentions only titanium dioxide. OK for potable water.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***F on 16 February 2025*

This stuff works great for ceiling pipe threads. I like to put this on my threads and then a little bit of Teflon tape over top of it or vice versa. Definitely worth the money. Great seal, easy to use, and easily removed with a towel.

### ⭐⭐⭐⭐⭐ Review
*by G***E on 29 April 2024*

I've been using laco for 50 years of my life in the plumbing and gas fitting trade. High end restaurants,it seals the threads and has lubricant abilities which allows the fitting to tighten even better. Best part is years later when undoing fittings they come right apart. If I could give it 10 stars I would. Retired 4 years ago and yep got a bottle in my tool bag. Very easy to use and any excess wipes right off...

### ⭐⭐⭐ Review
*by V***N on 22 November 2025*

Leaking tin !!!! Applicator brush set solid ..

## Frequently Bought Together

- LA-CO 42019 Slic-Tite Premium Thread Sealant Paste with PTFE, -50 to 500 Degree F Temperature, 1/2 pt Jar with Brush in Cap , White
- Rectorseal 31631 1/4 Pint Brush Top Tru-Blu Pipe Thread Sealant , Blue
- 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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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-21*