PRODUCTS > SEALANTS > NYLOG BLUE NYLOG BLUE GASKET & THREAD SEALANT Nylog Blue is an elastic fluid made from synthetic refrigeration grade compressor oil. Nylog Blue is fully miscible and compatible with all system refrigerants and oils. Gaskets coated with Nylog will never dry or become heat fixed to the surface. Threaded connections coated … Continue reading Nylog Blue Thread Sealant