---
product_id: 3907127
title: "RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)"
brand: "refrigeration technologies"
price: "฿1355"
currency: THB
in_stock: true
reviews_count: 8
category: "Refrigeration Technologies"
url: https://www.desertcart.co.th/products/3907127-rt201b-nylog-gasket-thread-sealant-30-ml-1-pack
store_origin: TH
region: Thailand
---

# Seals threaded connections flawlessly Lubricates O-rings & gaskets smoothly OEM-approved contamination-free formula RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)

**Brand:** refrigeration technologies
**Price:** ฿1355
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it right, seal it tight — the pro’s choice for leak-free confidence!

## Quick Answers

- **What is this?** RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack) by refrigeration technologies
- **How much does it cost?** ฿1355 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/3907127-rt201b-nylog-gasket-thread-sealant-30-ml-1-pack)

## Best For

- refrigeration technologies enthusiasts

## Why This Product

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

## Key Features

- • **Dual-Action Formula:** Seals and lubricates simultaneously, extending gasket and O-ring life.
- • **Leak-Proof Precision:** Stops refrigerant leaks and flare failures with professional-grade sealing.
- • **Fleet Mechanic Favorite:** Highly rated by pros for durability and consistent performance under pressure.
- • **Clean & Easy Application:** Smooth, mess-free use ensures a neat, professional finish every time.
- • **OEM Manufacturer Approved:** Trusted and certified by original equipment manufacturers for reliability.

## Overview

RT201B Nylog Gasket/Thread Sealant is a 30 ml professional-grade product designed to seal flares and threaded connections without contaminating systems. Approved by OEM manufacturers, it also lubricates O-rings and gaskets, ensuring durable, leak-proof assemblies favored by mechanics and DIY enthusiasts alike.

## Description

Refrigeration Technologies nylogâ" gasket thread sealant and assembly lube #rt201b. Product with good quality.

Review: Best sealant and lubricant for vac - I am a fleet mechanic and I am constantly doing on a/c repairs on our vehicles. You can definitely use dielectric grease if you want, but if you really take pride in your work and want to do it right NYLOG is the way to go. I have stopped leaking schrader valves and fittings from releasing refrigerant into the atmosphere. This stuff just works. Our parts guys now keep this in stock in large quantities just for me. The other mechanics have started using this product instead of silicone grease and are just as happy with it. This stuff is great if you are a professional or a DIY'er.
Review: Recommended the purchase - Great product was able to complete my project and made for a nice job. Clean up was easy.

## Features

- Will not Contaminate Systems
- Seals Flares and Threaded Connections
- Lubricates O-Rings and Gaskets
- Approved by OEM Manufacturers

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.7 out of 5 stars 9,798 Reviews |

## Product Details

- **Brand:** Refrigeration Technologies
- **Color:** Blue
- **Shape:** Round
- **UPC:** 330051886132 360846703061 360846703078 017857002019 696335207483
- **Manufacturer:** Refrigeration Technologies

## Images

![RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack) - Image 1](https://m.media-amazon.com/images/I/51v8lmbJ0JL.jpg)

## Questions & Answers

**Q: When doing a ductless AC system do you put this on the inside and outside of the flair or only on the threads?**
A: This stuff is great. You don't put it on the thread, it goes on the flair. It's not like lock tite it's a flair tight. I'm a diu girl and this is great stuff. I used it a year ago and I still have great ac. Before using it I could not hold a vacuum on my system.

**Q: Will this work with propane gas lines**
A: Having not used it, can't say 100%.  But since R290 is purified propane, and this says it's for all refrigerants, I don't see why not.  Though there may be additives in propane meant for heating that could possibly interact with it.  Certainly propane for heating is not as pure as the refrigeration stuff.  As someone else mentioned, asking the manufacturer is probably a good idea before trying.

**Q: can this be used to seal service valve caps?**
A: I don't believe I would use it for that purpose. If it gets into the valve it would probably keep the valve from working properly. I generally use brass caps with o-rings to seal service valve ports.

**Q: Would NYLOG blue seal a slow rim leak in a tubeless tire?**
A: I would think so.....but an expensive way to seal a tire....cleaning the rim bead with a wire wheel should do it.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best sealant and lubricant for vac
*by A***S on September 19, 2025*

I am a fleet mechanic and I am constantly doing on a/c repairs on our vehicles. You can definitely use dielectric grease if you want, but if you really take pride in your work and want to do it right NYLOG is the way to go. I have stopped leaking schrader valves and fittings from releasing refrigerant into the atmosphere. This stuff just works. Our parts guys now keep this in stock in large quantities just for me. The other mechanics have started using this product instead of silicone grease and are just as happy with it. This stuff is great if you are a professional or a DIY'er.

### ⭐⭐⭐⭐⭐ Recommended the purchase
*by R***E on February 12, 2026*

Great product was able to complete my project and made for a nice job. Clean up was easy.

### ⭐⭐⭐⭐⭐ Helps reduce AC flange connection leaks
*by S***E on December 10, 2025*

Helps prevent leaks on AC flange fittings. Works well, less expensive than others I've used, but seems to be same or very similar product. If doing AC work I'd recommend.

## Frequently Bought Together

- Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)
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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-22*