MAX MCR -Electronic Grade Potting Compound 4 Circuit Board, PCB Encapsulating, Embedding, Opaque Black Masking, Thin, Injectable, 1.5 Inch Thick Casting, Low Exotherm, Medium Set Time, 1.5 Gallon Kit

I like this over the previous stuff was using because this is a thinner viscosity...pours easier and quicker. Get more done in less time since not waiting for the pour. Overall seems to work well for electronic encapsulation.

Bought two sets of this kit. First set was poured and had to leave it over night. Product was mixed continuously for 10 minutes. after leaving it overnight the product hardened but did not completely cure overnight. some areas are still tacky and leave residue if touched. Second kit was also mixed continuously for 10 minutes. After 52 minutes mix started to heat up and within seconds it was steaming vigorously. By the time I attempted to pour (literally 53 minutes of mixing) it hardened mid pour instantly. Seams like the second batch is working properly but after the 30 working time the material will flash and harden instantly.

Excellent

This product was used to seal electrical wires on a submersible motor. It cured quickly and overnight it hardened to a glass like finish. Works great!