REVIEW: Nylog Gasket and Thread Sealant
This is kinda a mini review. Nylog is a product that I just came across in the last few months but it has changed the way I do things. If you think about it...you don't join two pieces of brass, galvanized, or PVC without adding pipe dope, teflon tape, or some other type of thread sealant?
So why would you think that a joint between two 1/2 (1/4 or 3/8) hose fitting will be leak free when under a low micron vacuum without some type of thread sealant? That's what Nylog is for.
There are two types of Nylog. Blue and Red. The blue is for HFC refrigerants. The red is for CFC or HCFC refrigerants. According to refrigeration technologies, the blue is universal as it has been approved for 410A. I use blue for all applications.
The thing that makes Nylog unique is that it is derived from refrigerant grade lubricants so there is no compatibility or contamination issues.
When applying Nylog, a little "dab" will go a long way. I've had good luck with simply applying a small amount directly on the needed threads then applying the fitting. Nylog will never dry, crack or become heat fixed. I haven't personally used them on any gaskets but it claims to be great on that application too. It will prevent the gaskets from drying out or cracking.
It comes in 30 ml bottle. The top twists open to allow easy dispensing of small amounts. If you get some on your hands or tools, it wipes off with a rag with no residue. That's more than I can say about other thread sealants.
If your serious about pulling a good vacuum and keeping all your hose fittings, micron gauges, and CRT's tight - you NEED this product. I believe Nylog is the determining factor between a 5000 micron and a 500 micron vacuum. I won't perform a vacuum without it ever again.
Brent A. Ridley