Connectors are used for various purposes in the laboratory and industrial setups. This could be for piping, tubing, and fitting. They can let pass liquids and gasses through them. They can tolerate both high temperature and high pressures. Connectors may be made of polyethylene, polyvinyl chloride or metals like copper or steel. They are also produced in various shapes and sizes such as Y shape, T shape, L shape, etc to fit for different kinds of apparatus.