MIL-LT-3/32-9-SP-CS7223 Datasheet MIL-LT-3/64-1-SP, MIL-LT-1/16-9-SP-CS7312, MIL-LT-1-1/2-0-SP | P1-P3

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Tyco Electronics Corporation

300 Constitutional Drive

Menlo Park, CA 94025 USA

Specification

This Issue:

Date:

Replaces:

RT-1171

Issue 7

December 5, 2001

Issue 6

Thermofit

MIL-LT Tubing

Low Shrink-Temperature

Polyolefin, Flexible, Heat-Shrinkable

1. SCOPE

This specification covers requirements for flexible electrical insulating, extruded tubing whose diameter will

reduce to a predetermined size upon the application of heat in excess of 90°C (194°F).

2. APPLICABLE DOCUMENTS

This specification takes precedence over documents referenced herein. Unless otherwise specified, the latest

issue of referenced documents applies. The following documents form a part of this specifications to the

extent specified herein.

2.1 GOVERNMENT-FURNISHED DOCUMENTS

Military

MIL-H-5606 Hydraulic Fluid, Petroleum Base, Aircraft, Missile and Ordnance

Mil-DTL-83133 Turbine Fuels, Aviation, Kerosene Types, NATO F-34 (JP-8), NATO F-35 and JP-8+100

MIL-L-7808 Lubricating Oil, Aircraft Turbine Engine, Synthetic Base

MIL-STD-104 Limits for Electrical Insulation Color

MIL-A-8243 Anti-icing and deicing-Defrosting Fluids

MIL-L-23699 Lubricating Oil, Aircraft Turbine Engines, Synthetic Base

2.2 OTHER PUBLICATIONS

ISO 846 Plastics-Evaluation of the action of microorganisms

American Society for Testing and Materials (ASTM)

D 2240 Standard Test Method for Rubber Property - Durometer Hardness

D 2671 Standard Methods of Testing Heat-Shrinkable Tubing for Electrical Use

(Copies of ASTM publications may be obtained from the American Society for Testing and Materials, 1916

Race Street, Philadelphia, Pennsylvania 19103.)

3. REQUIREMENTS

3.1 MATERIALS

The tubing shall be fabricated form thermally stabilized, modified polyolefin and shall be crosslinked by

irradiation. It shall be homogeneous and essentially free from flaws, defects, pinholes, bubbles, seams,

cracks, and inclusions.

3.2 PROPERTIES

The tubing shall meet the requirements of Table 3.

3.3 COLOR

The tubing shall be available in black, white, red, yellow or blue, unless otherwise specified.

Page 2 SPECIFICATION RT-1171 ISSUE 7

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4. QUALITY ASSURANCE PROVISIONS

4.1 CLASSIFICATION OF TESTS

4.1.1 Qualification Tests

Qualification tests are those performed on tubing submitted for qualification as a satisfactory product and

shall consist of all tests listed in this specification.

4.1.2 Acceptance Tests

Acceptance tests are those performed on tubing submitted for acceptance under contract. Acceptance tests

shall consist of the following:

Dimensions

Longitudinal Change

Tensile Strength

Ultimate Elongation

Flammability

Heat Shock

Low Temperature Flexibility

4.2 SAMPLING INSTRUCTIONS

4.2.1 Qualification Test Samples

Qualification test samples shall consist of 50 feet (125 m) of black and white tubing. Qualification of black

and white shall qualify all colors. Qualification of any size within each size range specified below shall

qualify all sizes within that size range.

Size Range

3/64 through 1/8

3/16 through 3/4

1 through 4

4.2.2 Acceptance Test Samples

Acceptance test samples shall consist of not less than 16 feet (5 m) of tubing selected at random from each

lot. A lot shall consist of all tubing of the same size, from the same production run, and offered for

inspection at the same time.

4.3 TEST PROCEDURES

Unless otherwise specified, perform tests on specimens which have been fully recovered by conditioning for

3 minutes in a 200 ± 5°C (392 ± 9°F) oven. Condition the test specimens (and measurement gauges, when

applicable) for 3 hours at 23 ± 3°C (73 ± 5°F) and 50 ± 5 percent relative humidity for 3 hours prior to all

testing. Use mechanical convection type ovens in which air passes the specimens at a velocity of 100 to 200

feet (30 to 60 m) per minute.

4.3.1 Dimensions and Longitudinal Change

Measure three 6-inch (150 mm) specimens of tubing as supplied, for length ± 1/32 inch

(± 1 mm), and inside diameter in accordance with ASTM D 2671. Condition the specimens for

3 minutes in a 200 ± 5°C (392 ± 9°F) oven, cool to 23 ± 3°C (73 + 5°F), and then remeasure. Prior to and

after conditioning, the dimensions of the tubing shall be in accordance with Table 1 and the longitudinal

change shall be in accordance with Table 3. Calculate the longitudinal change as follows:

C =

- L

x 100

Where: C = Longitudinal Change [percent]

= Length Before Conditioning [inches (mm)]

= Length After Conditioning [inches (mm)]

SPECIFICATION RT-1171 ISSUE 7 Page 3

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4.3.2 Tensile Strength and Ultimate Elongation

Determine the tensile strength and ultimate elongation of the tubing in accordance with

ASTM D 2671 using 1-inch (25-mm) bench marks, a 1-inch (25-mm) initial jaw separation, and jaw

separation speed of 20 ± 2 inches (500 ± 50 mm) per minute.

4.3.3 Low Temperature Flexibility

Test three specimens of tubing for low temperature flexibility as follows: for tubing sizes

3/4-inch expanded and smaller, shrink and condition the tubing as specified in 4.3 onto a stranded AWG wire

(nearest AWG which is larger than the tubing maximum I.D. nominal after unrestricted shrinkage). For

tubing sizes larger than 3/4-inch, cut a 6 x 1/4-inch (150 x 6-mm) longitudinal strip from tubing that has been

recovered. Condition the specimens and a mandrel, selected from Table 2, in a cold chamber for 4 hours at -

55 ± 3°C (-67 ± 5°F). After completion of the conditioning period and while still in the cold chamber at the

specified temperature, bend the specimen around the mandrel through not less than 360 degrees in 10 ± 2

seconds. Visually examine the tubing for cracks.

4.4 REJECTION AND RETEST

Failure of any sample of tubing to conform to any one of the requirements of this specification shall be cause

for rejection of the lot represented. Tubing which has been rejected may be replaced or reworked to correct

the defect and then resubmitted for acceptance. Before resubmitting, full particulars concerning previous

rejection and action taken to correct the defects shall be furnished to the inspector.

5. PREPARATION FOR DELIVERY

5.1 FORM

The tubing shall be supplied on spools, unless otherwise specified.

5.2 PACKAGING

Packaging shall be in accordance with good commercial practice.

5.3 MARKING

Each container of tubing shall be permanently and legibly marked with the size, quantity, manufacturer's

identification, specification number, and lot number.

P1-P3 P4-P6

MIL-LT-3/32-9-SP-CS7223

Mfr. #:

Buy MIL-LT-3/32-9-SP-CS7223

Manufacturer:

TE Connectivity

Description:

Heat Shrink Tubing and Sleeves MIL-LT-3/32-9-SP- CS7223

Lifecycle:

New from this manufacturer.

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MIL-LT-3/32-9-SP-CS7223

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