G

Gasket (extended definition)
Piece of material that seals two parts together. Prevents air or fluids from leaking between the parts.

Glass transition temperature
The glass transition temperature (Tg) is the temperature point where a polymer experiences a significant change in properties. The polymer structure turns "rubbery" upon heating and "glassy" upon cooling; a large change in Young's Modulus is experienced. Amorphous polymers are structural below Tg and go through one stage of the change from a glassy to a rubbery consistency with a simultaneous loss in stiffness. Crystalline, materials go through a stage of becoming leathery before becoming rubbery.

Glue (extended definition)
Originally: adhesive based on egg white. Adhesive made from protein derived from the collagen in animal products such as hides and bones. Word now used indiscriminately to mean an adhesive, mainly in connection with woodworking. Includes adhesives on an animal, plant or synthetic base. Syn. Natural resin

Green time
Time between application and solidification of the adhesive. During the green time, it is still possible to position parts. Fixuring time is often somewhat longer than green time.
Syn. Open time