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SPECIFICATION RT-350 ISSUE 17
REQUIREMENTS
MATERIALS
The tubing shall be fabricated from 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.
PROPERTIES
The tubing shall meet the requirements of Table 3.
QUALITY ASSURANCE PROVISIONS
CLASSIFICATION OF TESTS
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.
Acceptance Tests
Acceptance tests are those performed on tubing submitted for acceptance under contract. Acceptance tests
shall be: dimensions, longitudinal change, tensile strength, ultimate elongation, secant modulus, flammability
(Type 1 only), and heat shock. Statistical process control data may be used to demonstrate conformance for
dimensions.
SAMPLING INSTRUCTIONS
Qualification Test Samples
Qualification test samples shall consist of 50 feet (15 m) of black, white and clear tubing. Qualification of
black and white shall qualify all colors. Clear shall be qualified separately. Qualification of any size within
each size range specified below shall qualify all sizes within that size range.
Range of Sizes
3/64 through 1/4
3/8 through 1
1-1/4 through 5
Acceptance Test Sample
Acceptance test samples shall consist of not less than 16 feet (5 m) of tubing selected at random from each
compound batch or the first sleeving production lot of the batch compound. Physical property tests
performed at this time qualify subsequent sleeving lots produced from the same compound batch.
TEST PROCEDURES
Condition test specimens and measurement gauges at 23 ± 3°C (73 ± 5°F) and ambient relative humidity
prior to all testing, whether before or after heat shrinking. 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.
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.
If this document is printed it becomes uncontrolled. Check for the latest revision.
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