... , Polyesters. · Epoxy Acrylates, Hybrids, Urethanes. · Polysulfides, foams, Polymers, polyureas How to use caulking gun? Instructions:1, Open the swfit of handle ... 3, Promote the trigger to make the impression material come out smoothly from the cartidge4, After using, put the rack ... back to the original location.5, Remove the cartridge, ...