User Guide

8
An elastomer, by American Society for Testing and Materials (ASTM) standards,
is defined as “a substance that can be stretched at room temperature to at
least twice its original length and, after having been stretched and the stress
removed, returns with force to approximately its original length in a short
period of time.
Definition
Elastomers are used in solenoid valves for many different functions, including:
•O-rings
Gaskets
•Piston rings
•Diaphragms
•Seats
Use with solenoid valves
Elastomers used for refrigeration applications include neoprene and
polytetrafluoroethylene (PTFE). A glass-filled PTFE (Rulon
®
) is also used in
many instances in which a harder material is required.
Refrigeration applications
Elastomers