Use for tube outer diameter 1/2''-3/4'' (12-18mm). And the tubes you use the clamp for must be flexible and the thickness of the tubes must be above 0.02 in/0.5mm
High Temperature Resistant Hose Clamps can be used at high temperature of not more than 140 degree Celsius: made from high quality heat resistant PBT plastic (polybutylene terephthalate),good elasticity, clamping force, and durable
Tubing clamps are widely used in laboratory instruments,chemical industry, beer brewing, wine making and etc.