When doing a ductless AC system do you put this on the inside and outside of the flair or only on the threads?

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.

Will this work with propane gas lines

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.

can this be used to seal service valve caps?

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.

Would NYLOG blue seal a slow rim leak in a tubeless tire?

I would think so.....but an expensive way to seal a tire....cleaning the rim bead with a wire wheel should do it.

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RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)

Product ID: 593544130

Details

Brand
Refrigeration
Material
Nylon
Colour
Blue
Shape
Round
UPC
330051886132

✅OEM manufacturer approved

🧴Lubricates O-rings & gaskets

🛠️Seals flares & threaded connections

456 kr

Duties & taxes included

In stock

Sold byAmazon NorwayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Seal smart, work smarter — the pro’s choice for flawless refrigeration!

SMOOTH ASSEMBLY - Lubricates O-rings and gaskets for effortless installation and maintenance
TRUSTED BY EXPERTS - OEM-approved for guaranteed quality and compatibility
COMPACT EFFICIENT - 30 ml pack fits perfectly in your toolkit for on-the-go fixes
SYSTEM SAFE FORMULA - Won't contaminate refrigeration systems—preserve performance and longevity
FLAWLESS SEAL EVERY TIME - Ensures leak-proof connections for ultimate system reliability

Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant is a 30 ml high-quality sealant designed to securely seal flares and threaded connections without contaminating refrigeration systems. It lubricates O-rings and gaskets for smooth assembly and is OEM-approved, making it a trusted solution for professional-grade refrigeration maintenance.

Specifications

ASIN	B008HOSQQQ
Best Sellers Rank	#47,219 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #272 in Hardware Sealers
Item model number	RT201B
Manufacturer	Refrigeration Technologies
Product Dimensions	2.54 x 2.54 x 1.27 cm; 22.68 g

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