EPR or EPDM
Non oil resistant, but excellent in steam, ozone, phosphate ester, brake fluid, weathering.
Helix
Tubing, Clear Silicone per USP23, Class VI
Latex
Amber, 40 durometer Also Available in Colors
Neoprene
Black, 60 durometer. (CR) Chloroprene. The material for Freon. Beyond that it is usually a best "second" choice and to be considered when there is a combination of media.
PTFE
(PTFE) Polytetrafluoroethylene. A synthetic fluoropolymer of tetrafluoroethylene that has numerous applications.
Pure Gum
45 durometer, T=Tan B=Black R=Red
PVC
Clear, Flexible
Silicone
60 durometer, Red or Translucent. An inorganic material, broadest temp range ( -100°F to +500°F). Great for aging. medical grades, FDA grades, colors. Not the best physical properties. Poor oil resistance.
