Thermofit Tubing
Specification Control Drawing
No: MT3000
Rev: A
Date: October 30, 1996
Page: 1 of 2
Altera™
MT3000
Flexible, Modified Fluoropolymer,
Heat - Shrinkable Tubing
This specification covers the requirements for one type of single wall, flexible, electrical insulating, extruded
tubing whose diameter will reduce to a predetermined size upon application of heat in excess of 150° C (302° F).
The tubing is fabricated from modified fluoropolymer crosslinked by irradiation. It shall be homogenous and
essentially free from flaws, defects, pinholes, seams, cracks or inclusions.
The tubing is fabricated from materials which meet the requirements of U.S. Pharmacopeia Class VI Plastics.
Color shall be black unless otherwise specified.
Table 1: Dimensions
As Supplied
Recovered
Size
Inside Diameter
Minimum (D)
Inside Diameter
Maximum (d)
Wall Thickness(Inches, Millimeters)
(W)
in.
mm. in. mm. Minimum Maximum Nominal
3/64 .046 1.17 .023 0.58 .008 0.20 0.12 0.31 .010 0.25
1/16 .063 1.60 .031 0.79 .008 0.20 0.12 0.31 .010 0.25
3/32 .093 2.36 .046 1.17 .008 0.20 0.12 0.31 .010 0.25
1/8 .125 3.18 .062 1.58 .008 0.20 0.12 0.31 .010 0.25
3/16 .187 4.75 .093 2.36 .008 0.20 0.12 0.31 .010 0.25
1/4 .250 6.35 .125 3.18 .009 0.28 0.15 0.38 .012 0.33
3/8 .375 9.53 .187 4.75 .009 0.28 0.15 0.38 .012 0.33
1/2 .500 12.70 .250 6.35 .009 0.28 0.15 0.38 .012 0.33
3/4 .750 19.05 .375 9.53 .014 0.36 0.20 0.51 .017 0.43
1 1.000 25.40 .500 12.70 .016 0.41 0.22 0.56 .019 0.48
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Thermofit Tubing
Specification Control Drawing
No: MT3000
Rev: A
Date: October 30, 1996
Page: 2 of 2
Table 2: Properties
Properties Unit Requirement Test Method
Physical
* Dimensions
Inches (mm)
In accordance with Table 1
* Longitudinal Change Percent +0, -10 ASTM D 2671
* Concentricity as supplied Percent 70 minimum
* Tensile Strength PSI (MPa) 4000 minimum (27.6) ASTM D 2671,
* Ultimate Elongation Percent 300 minimum 20" minute
* Secant Modulus (Recovered) PSI (MPa) 50,000 maximum (345) ASTM D 2671
Heat Resistance
336 hours at 225°C (437°F)
Followed by test for:
ASTM D 2671,
20"/minute
Ultimate Elongation Percent 250 minimum
Electrical
Dielectric Strength
Volts/mil
(volts/mm)
500 minimum (19,680)
ASTM D 2671
Dielectric Withstand
3000V, 60 Hz
sec
60 minimum
ASTM D 2671
Chemical
Fluid Resistance
24 hours at 23 ± 3°C (77 ± 5°F)
Isopropyl Alcohol
5% Saline Solution
Cidex **
Followed by tests for:
ASTM D 2671
Dielectric Strength Volts/mil
(volts/mm)
400 minimum (15,760) ASTM D 2671
Tensile Strength PSI (MPa) 3500 minimum (24.1) ASTM D 2671
Heavy Metal Analysis
Cadmium
Mercury
Lead
Bismuth
Antimony
ppm 1 maximum
(total of all metals)
USP XXII
Physicochemical
Tests-Plastics
(Note 1)
* Denotes lot acceptance test
**Trademark of Johnson & Johnson Company
Note 1: Sample preparation and extraction is per USP XXII. Metals analysis may be colorimetric as described in
USP XXII or by equivalent quantitative analytical method.
Raychem reserves the right to amend this specification at any time. Users should evaluate the suitability of the product for their application.
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