Gehman Stiffness Tester | 223

The Gehman Stiffness Tester evaluates stiffness or rubber at low temperature according to ISO 1432.

The testing operation is automatic and specimens are twisted by means of a wires of known torque at programmed test temperature.

The angle of twist produced at this time is detected and is sent to the data processing unit.

Low Temperature Retraction Tester | 226

The Low Temperature Retraction Tester evaluates the temperature at which a specimen reaches a certain specified contraction ratio while the temmperature of the specimen, which has been stretched to a certain level and frozen at a low temperature, is raised at a certain constant rate.

The TR test is mainly used to determine the elastic recovery characteristics at a low temperature of the materials of which sealing performance is required, such as rubber seal components, hose etc.

Brittle Point Temperature Tester | 525

The Brittle Point Temperature Tester evaluates specimens immersed in liquid at low temperature.  Impact is applied by hammer at constant speed and evaluation is made from generation of cracks.