Use cartridges with a standard caulk gun for quick and easy dispensing. These gasket makers have a thick consistency that creates a seal right away, even before they begin to harden, so you can use your machine again in just one minute. They are used in place of rubber, cork, and other traditional gasket materials for a form-in-place seal. They also make it easy to form irregular-shaped gaskets. All are RTV (room temperature vulcanizing).