MG Chemicals 2-part, low-viscosity, black, general-purpose epoxy potting compound

Excellent product. Arrived on time. Easy to use, comes with applicator. Can reuse both content and applicator. Trick is to flush the applicator after use, with a degreasing fluid using some sort of syringe to force the fluid through the applicator till it's clear. Both the cap and the applicator are polarised so there is no chance of cross contamination.

I ordered this because it had the small nozzle I needed to deliver the compound. The instructions tell you to inject the two parts via the nozzle into a container then mix by hand.I followed the instructions which meant I had to pour the compound into the void and waste what was stuck in the pot.The nozzle is for mixing, you don't need to mix by hand.