Tygon<span class="sup">®</span> 3370 I.B. Braid-Reinforced Silicone Hose

Tygon® 3370 I.B. Braid-Reinforced Silicone Hose

The smooth surface, platinum-cured silicone hose designed for transferring high-purity fluid under pressure.

Designed to Maintain Fluid Purity Under Pressure

Braid reinforced for increased pressure resistance, Tygon® 3370 I.B. silicone hose is frequently specified in the most demanding applications requiring sanitary transfer of fluids. Its smooth inner surface reduces the risk of particle entrapment and inhibits microscopic bacterial build-up. Cleaning and sterilization cycles also may become more effective from this smooth inner surface by helping to prevent excessive residue buildup during use. Additionally, an improvement in fluid flow characteristics may occur from the reduced surface area and lowered absorption of fluids to the wall.

Tygon® 3370 I.B. can easily withstand repeated SIP and CIP cleaning and sterilization cycles, making it ideal for repeat-use applications. Its flexibility, durability, chemical and temperature resistance provide a unique combination of characteristics required in many pharmaceutical, biotechnology, laboratory, food, beverage, cosmetic, environmental, and industrial applications.

Lower Extractables and Exceptional Biocompatibility

Tygon® 3370 I.B. silicone hose is produced from a platinum curing process to meet the most demanding requirements of biocompatibility.

In-house extractability tests have shown that Tygon® 3370 I.B. hose has a low extractable content. Lower extractables help to maintain the purity of transported fluids in sensitive applications.

Tygon® 3370 I.B. hose complies fully with the requirements of the USP Class VI Criteria and is entirely non-toxic, non-hemolytic and non-pyrogenic. Continued monitoring of the hose also ensures minimal bioburden levels are maintained. Tygon® 3370 I.B. hose also meets 3- A Sanitary Standard No. 18-01 and FDA 21 CFR Part 177.2600 Criteria.

Click for complete size chart, toxicological profile, and sterilization methods


  • Consistently smooth inner surface limits
  • particle entrapment
  • Platinum cured to minimize extractables
  • Tough braid reinforcement permits
  • use under elevated working pressures
  • Withstands repeated CIP and
  • SIP cleaning and sterilization
  • Custom color striping available
Typical Applications
  • Sterile filling
  • Media dispensing
  • Vaccine manufacturing
  • Bioreactor process lines
  • Water purification systems
  • Food and dairy processing
  • Diagnostic test product manufacturing
  • Sanitary fitting assembly
Tygon® 3370 I.B. Tubing Typical Physical Properties
PropertyASTM Method Value or Rating
Durometer Hardness - Shore A, 15 sec D2240-91 70
Color - Translucent
Tensile Strength - psi (MPa) D412-92 1,200 (8.3)
Ultimate Elongation, % D412-92 500
Tear Resistance - lb-f/inch (kN/m) D624-91 - Die B 250 (44)
Specific Gravity D792-91 1.18
Water Absorption, % - 24 hours @ 23ºC D570-81 0.11
Compression Set Constant Deflection, % - @ 158ºF (70ºC) for 22 hours
Compression Set Constant Deflection, % - @ 347ºF (175ºC) for 22 hours
D395-89 - Method B 3
Brittleness by Impact Temp - ºF (ºC) D746-79 -112 (-80)
Max Recommended Operating Temp - ºF (ºC) - 320 (160)
Dielectric Strength - v/mil (kV/mm) D149-93 600 (24)
Tensile Modulus, @ 200% Elongation, psi (MPa) D412-92 650 (4.5)
Tensile Set, % D412-92 25

Unless otherwise noted, all tests were conducted at room temperature (73°F). Values shown were determined on 0.075" thick extruded strip or 0.075" thick molded ASTM plaques or molded ASTM durometer buttons.