---
product_id: 3907127
title: "Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)"
brand: "refrigeration technologies"
price: "217 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Refrigeration Technologies"
url: https://www.desertcart.dk/products/3907127-refrigeration-technologies-rt201b-nylog-gasket-thread-sealant-30-ml-1
store_origin: DK
region: Denmark
---

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

**Brand:** refrigeration technologies
**Price:** 217 kr
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it like a pro, leak-free and worry-free!

## Quick Answers

- **What is this?** Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack) by refrigeration technologies
- **How much does it cost?** 217 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/3907127-refrigeration-technologies-rt201b-nylog-gasket-thread-sealant-30-ml-1)

## 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

- • **Industry Leader:** Ranked #4 in Industrial Thread Sealants—join the pros who won’t settle
- • **Leak-Proof Confidence:** Stops refrigerant leaks to protect your system and the environment
- • **Pro-Grade Reliability:** Trusted by fleet mechanics and OEMs for consistent, high-quality sealing
- • **Effortless Application:** Smooth lubrication reduces wear and simplifies installation
- • **Clean & Professional Finish:** Easy cleanup for a neat, job-site worthy result every time

## Overview

Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant is a 30 ml professional-grade sealant and assembly lubricant designed to prevent leaks in flares and threaded connections. OEM-approved and contamination-free, it lubricates O-rings and gaskets for smooth installation, making it a top choice for mechanics and HVAC professionals seeking reliable, clean, and durable sealing solutions.

## 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 |
|---------------|-------|
| ASIN | B008HOSQQQ |
| Best Sellers Rank | #692 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Industrial Thread Sealants |
| Date First Available | July 5, 2012 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.8 ounces |
| Item model number | RT201B |
| Manufacturer | Refrigeration Technologies |
| Product Dimensions | 1 x 1 x 0.5 inches |

## Product Details

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

## Images

![Refrigeration Technologies 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.

### ⭐⭐⭐⭐⭐ A must-have for flare fittings
*by L***C on August 25, 2025*

For anyone who needs to assemble flare fittings (very common with ductless mini-split heat pumps and vintage automotive air conditioning systems) you really owe it to yourself to get a bottle of this. You only need a couple drops per connection, but this stuff works wonders. HVAC installers know that flare fittings are a very common point of failure in HVAC systems, but this product helps tremendously. It allows the pieces to move around just a little when assembling them, which allows you to easily find that "spot" where the flare sits just right on the fitting. This product also lubricates the threads and the interface between the pipe and the collar, which makes torquing the connection easier, and with very little change of damaging the flare (also a common problem with this type of connection). I think this is well worth the cost.

## Frequently Bought Together

- Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)
- DuctlessAire Outdoor Wall Bracket - Mini Split Wall Mounting Bracket - Air Conditioner Support Brackets - Mounted Brackets for Ductless Mini Split, Heater, Window AC Unit & More (9000-36000 BTU)
- R410a Adapter for Mini Split System, Charging Vacuum Port Adapter, 5/16 Female 1/4 Male Flare, Valve Core Remover, r134a Hose Gaskets, 5V1 Valve Cores, for HVAC and Refrigeration Service

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.dk/products/3907127-refrigeration-technologies-rt201b-nylog-gasket-thread-sealant-30-ml-1](https://www.desertcart.dk/products/3907127-refrigeration-technologies-rt201b-nylog-gasket-thread-sealant-30-ml-1)

---

*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-04-23*