Ethyl: Standard cyanoacrylate as most consumers know it. This product ranges in viscosity from 3cps to a gel. Essentially the thicker the product the slower the setting time, in most cases. Thinner product is used for it's rapid bonding properties, especially with rubber 'O' rings etc. Thicker product is used for more porous surfaces such as wood and ceramics, often in conjunction with an activator in aerosol form.