Horobin’s offers Super Nylon Test Plugs, which feature superior design and are easier to use. Available from 18mm up to 150mm diameter, these Super Nylon Test Plugs can be used for testing up to 7p.s.i and are designed to fit Telecommunication Ducts for temporary sealing to prevent ingress of vermin and sand. These test plugs are also easy to sterilise, hence can even be used in Hospitals, Food Processing Plants etc.