Natural Rubber Latex Tubing Specification Sheet

Chemical Resistance:
Strong Alkalies – Fair
Weak Alkalies – Good
Strong Acids – Poor
Weak Acids – Good
Petroleum – Poor

Physical Properties:
Tensile Strength (psi) – 3500 min.
Ultimate Elongation – 750% min.
Hardness (Shore A) – 35 +/- 5
100% Modulus (psi) – 125 max.
Specific Gravity – 0.97 max.

Ozone Resistance:

UV Resistance:

Low Temperature Flex:
Brittle: -67 degrees F
Flexible: 0 degrees F

Recommended Sterilization:
Steam Autoclave 30 minutes @ 15 psi
Ethylene Oxide

Protein in Natural Rubber:
Less than 50 micrograms/gram. Fifty ug/g is detection limit of ASTM D5712-95.

Maximum Recommended Operating Temperature:
212 degrees F intermittent
158 degrees F continuous

Standard Tolerances:
Inside diameter:

+/-0.015 inch on sizes up to 3/8 inch, proportionately greater on larger sizes.

Wall Thickness:

1/32 inch and 3/64 inch +/- 0.007 inch
1/16 inch and 5/64 inch +/- 0.010 inch
3/32 inch and 1/8 inch +/- 0.015 inch
Wall thickness greater than 1/8 inch are gauged on the outside diameter tolerance.

Natural Rubber Latex Tubing meets or exceeds the physical properties of Commercial Item Description A-A-50247C Type I Class 1,2, and 3, Type III, Type IV, and Type V Class 1,2, and 3 which replaced Federal Specification ZZ-T-831D. Tubing is in compliance with USP Biological Classification IV.

We support the world-wide goal to eliminate the use of ozone depleting chemicals. We do not knowingly use a Class I or class II ozone depleting chemical as identified in the U.S. Clean Air Amendments of 1990 in the manufacturing process of our natural rubber latex tubing.

CRUSHPROOF®, CT®, (and the CT logo), FLARE-LOK®, CUSTOMFLEX®, UNIHOSE®, SAFETY PORT®, EXHAUST-AWAY®, and CYCLOVAC® are registered trademarks of Crushproof Tubing Co. in the United States and other countries and are being used with permission.