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

Product ID: 593544130

Details

Brand
Refrigeration
Item dimensions L x W x H
25 x 25 x 13
Item weight
0.8 Ounces
Material
Nylon
Style
Sealant

✅OEM manufacturer approved

🧴Lubricates O-rings & gaskets

🛠️Seals flares & threaded connections

NZ$84

Duties & taxes included

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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	#66,238 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #384 in Hardware Sealers
Brand	Refrigeration Technologies
Brand Name	Refrigeration Technologies
Color	Blue
Customer Reviews	5.0 out of 5 stars 2 Reviews
Global Trade Identification Number	00017857002019
Included Components	Bottle
Item Dimensions	25 x 25 x 13 millimeters
Item Form	Liquid
Item Weight	0.8 Ounces
Item dimensions L x W x H	25 x 25 x 13 millimeters
Item form	Liquid
Item weight	0.8 Ounces
Manufacturer	Refrigeration Technologies
Material	Nylon
Material Type	Nylon
Model	RT201B
Number of Items	1
Number of Packs	1
Part Number	RT201B
Style	Sealant
Style Name	Sealant
UPC	330051886132 360846703061 360846703078 017857002019 696335207483
Unit Count	1 Count

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NZ$84

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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