--- product_id: 3907127 title: "RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)" brand: "refrigeration technologies" price: "€ 31.49" currency: EUR in_stock: true reviews_count: 8 category: "Refrigeration Technologies" url: https://www.desertcart.at/products/3907127-rt201b-nylog-gasket-thread-sealant-30-ml-1-pack store_origin: AT region: Austria --- # Leak-proof flexible seal OEM-approved reliability 30 ml precision applicator RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack) **Brand:** refrigeration technologies **Price:** € 31.49 **Availability:** βœ… In Stock ## Summary > πŸ”§ Seal smart, work smarter β€” the pro’s choice for leak-free peace of mind! ## Quick Answers - **What is this?** RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack) by refrigeration technologies - **How much does it cost?** € 31.49 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/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 - β€’ **OEM-Approved Quality:** Trusted and approved by leading manufacturers for system safety - β€’ **Seal with Confidence:** Creates durable, leak-free seals on flares and threaded connections - β€’ **Lubricates & Protects:** Smooths assembly by lubricating O-rings and gaskets, reducing wear - β€’ **Long-Lasting Efficiency:** Small 30 ml bottle delivers extended use, maximizing value - β€’ **Stay Flexible, Stay Ahead:** Remains pliable for easy future maintenance without cracking ## Overview The Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant is a 30 ml OEM-approved thread sealant and assembly lubricant designed for HVAC and refrigeration systems. It ensures leak-proof, flexible seals on flares, threaded connections, O-rings, and gaskets without contaminating the system. Its unique formula remains pliable for easy maintenance and is compatible with refrigerants and compressor oils, making it a trusted staple among professionals. ## Description Refrigeration Technologies nylogΓ’" gasket thread sealant and assembly lube #rt201b. Product with good quality. Review: Excellent Outdoor Light with Convenient GFCI Outlet - The Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant is an excellent product for HVAC and refrigeration work. I've used it on flare fittings, threaded connections, O-rings, and gaskets, and it consistently helps create leak-free seals. Unlike traditional thread sealants, Nylog remains flexible and does not harden, making future maintenance and disassembly much easier. What stands out most is its compatibility with refrigerants and compressor oils. It lubricates connections during assembly while providing an extra layer of protection against leaks. A small amount goes a long way, so the 30 ml bottle lasts much longer than expected. The sealant is easy to apply, stays in place, and performs well even in systems exposed to vibration and temperature changes. It's a trusted product among HVAC professionals for good reason. Overall, if you're working on refrigeration or air conditioning systems and want a dependable sealant that won't contaminate the system, the RT201B Nylog Blue is a worthwhile addition to your toolbox. Highly recommended. Review: Very helpful in amateur HVAC work. - The Nylog arrived promptly. Used it in the installation of a mini-split. The product is easy to use. The mini-split has been working beautifully with no refrigerant leaks during testing and operation for about three days so far. ## 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 10,234 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 ### ⭐⭐⭐⭐⭐ Excellent Outdoor Light with Convenient GFCI Outlet *by A***W on June 8, 2026* The Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant is an excellent product for HVAC and refrigeration work. I've used it on flare fittings, threaded connections, O-rings, and gaskets, and it consistently helps create leak-free seals. Unlike traditional thread sealants, Nylog remains flexible and does not harden, making future maintenance and disassembly much easier. What stands out most is its compatibility with refrigerants and compressor oils. It lubricates connections during assembly while providing an extra layer of protection against leaks. A small amount goes a long way, so the 30 ml bottle lasts much longer than expected. The sealant is easy to apply, stays in place, and performs well even in systems exposed to vibration and temperature changes. It's a trusted product among HVAC professionals for good reason. Overall, if you're working on refrigeration or air conditioning systems and want a dependable sealant that won't contaminate the system, the RT201B Nylog Blue is a worthwhile addition to your toolbox. Highly recommended. ### ⭐⭐⭐⭐⭐ Very helpful in amateur HVAC work. *by Z***H on June 8, 2026* The Nylog arrived promptly. Used it in the installation of a mini-split. The product is easy to use. The mini-split has been working beautifully with no refrigerant leaks during testing and operation for about three days so far. ### ⭐⭐⭐⭐⭐ Good Stuff *by B***B on August 28, 2026* Does what it's supposed to do, goes on easy, quite sticky so it stays in place. ## 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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/3907127-rt201b-nylog-gasket-thread-sealant-30-ml-1-pack](https://www.desertcart.at/products/3907127-rt201b-nylog-gasket-thread-sealant-30-ml-1-pack) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-09-03*