Delrin POM Acetal White Tube (3/4") 0.750" OD  x (1/4") .250" ID x 12" Length

-20° to 180º F
ASTM D6778, NSF
ANSI Standard 61 for Drinking Water

Oversized OD and an undersized ID for finishing to the sizes listed.

OD Tolerance +.050" 
ID Tolerance -.050"