Thermofit DR-25 Tubing Spec Datasheet by TE Connectivity Raychem Cable Protection

-: TE «Mommy Milimy Federal Am Society for T ng and Mate Imemalional Or unizmion for Standardizmion ISO hug://www iso.ch/ixo/cn/ISOOn1inc.from gage
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Tyco Electronics Corporation
305 Constitutional Drive
Menlo Park, CA 94025 USA
Raychem
Specification
This Issue:
Date:
Replaces:
RT-1116
Issue 6
14-Apr-14
Issue 5
Thermofit DR-25 Tubing
Elastomeric, Fluid Resistant, Abrasion Resistant, Flexible, Heat-Shrinkable
1. SCOPE
This specification covers the requirements for one type of highly flexible, electrical insulating, extruded
tubing whose diameter will reduce to a predetermined size upon the application of heat in excess of 175°C
(347°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 specification to the
extent specified herein.
2.1 GOVERNMENT-FURNISHED DOCUMENTS
Military
MIL-PRF-5606 Hydraulic Fluid, Petroleum Base, Aircraft, Missile, and Ordnance
MIL-DTL-5624 Turbine Fuel, Aviation, Grade JP-8
MIL-PRF-6083 Hydraulic Fluid, Petroleum Base, for Preservation and Operation
SAE-AMS1424 Anti-Icing and Deicing - Defrosting Fluid
MIL-PRF-23699F Lubricating Oil, Aircraft Turbine Engines, Synthetic Base
MIL-PRF-46170D Hydraulic Fluid, Rust Inhibited, Fire-Resistant, Synthetic Hydrocarbon Base
Federal
A-A-59133 Cleaning Compound, High Pressure (Steam) Cleaner
A-A-52557 Fuel Oil, Diesel
2.2 OTHER PUBLICATIONS
American Society for Testing and Materials (ASTM)
D 257 Standard Test Methods for D-C Resistance or Conductance of Insulating Materials
D 412 Standard Test Methods for Rubber Properties in Tension
D 2240 Standard Test Methods for Rubber Property - Durometer Hardness
D 2671 Standard Methods of Testing Heat-Shrinkable Tubing for Electrical Use
G 21 Standard Recommended Practice for Determining Resistance of Synthetic Polymeric
Materials to Fungi
(Copies of ASTM publications may be obtained from the American Society for Testing and Materials, 1916
Race Street, Philadelphia, Pennsylvania 19103).
International Organization for Standardization (ISO)
ISO 846 Plastics – Evaluation of the action of Microorganisms
(Copies of ISO publications may be obtained from the International Organization for Standardization, 1, rue
de Varembé, CH-1211 Geneva 20, Switzerland or via the ISO website at
http://www.iso.ch/iso/en/ISOOnline.frontpage
Qualificmion Tesla Acccglancc Texts Qualificmion Tcsl Samglcs
Page 2 SPECIFICATION RT-1116 Issue 6
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3. REQUIREMENTS
3.1 MATERIAL
The tubing shall be fabricated from a stabilized, flame resistant, modified elastomer and shall be radiation
crosslinked. It shall be homogeneous and essentially free from flaws, defects, pinholes, bubbles, seams,
cracks, and inclusions.
3.2 COLOR
The tubing shall be black.
3.3 PROPERTIES
The tubing shall meet all the requirements of Table 3.
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, tensile stress, ultimate
elongation, heat shock, hardness, flammability, and low temperature flexibility.
4.2 SAMPLING INSTRUCTIONS
4.2.1 Qualification Test Samples
Qualification test samples shall consist of 50 feet (15 m) of tubing of each size. Qualification of any size
within each size range specified below will qualify all sizes in the same range.
Size Ranges
1/4 through 3/4
1 through 3
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, tests shall be performed on specimens which have been fully recovered by
conditioning for 10 minutes in a 200 ± 2°C (392 ± 4°F) oven. Prior to all testing, the test specimens (and
measurement gauges, when applicable) shall be conditioned for 3 hours at
23 ± 3°C (73 ± 5°F) and 50 ± 5 percent relative humidity. All ovens shall be of the mechanical convection
type in which air passes over the specimens at a velocity of 100 to 200 feet (30 to 60 m) per minute.
4.3.1 Dimensions and Longitudinal Change
Three 6-inch (150-mm) specimens of tubing, as supplied, shall be measured for length ± 1/32 inch (± 1 mm)
and inside diameter in accordance with ASTM D 2671, conditioned for 10 minutes in a
200 ± 2°C (392 ± 4°F) oven, cooled to 23 ± 3°F (73 ±5°F) and then remeasured. 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. Longitudinal change shall be calculated as follows:
C = L1 - L0
L0 x 100
WHERE: C = Longitudinal Change (percent)
L
0 = Length Before Conditioning [inches (mm)]
L
1 = Length After Conditioning [inches (mm)]
Tensile Slrcnglh, Tensile Straw, and Ullimalc Elongation Low Tcmgcralurc Flex y_ Ham Shock Coggcr Stability Corrosive Effect
SPECIFICATION RT-1116 Issue 6 Page 3
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4.3.2 Tensile Strength, Tensile Stress, and Ultimate Elongation
Three specimens of tubing shall be tested for tensile strength, tensile stress, and ultimate elongation in
accordance with ASTM D 2671. For tubing size 3/8, the specimens shall be full sections of tubing. For sizes
1/2 and larger, the specimens shall be cut with Die D of ASTM D 412. The specimens shall have 1-inch (25-
mm) bench marks, centrally located. The testing machine shall have an initial jaw separation of 1 inch (25
mm) for full sections of tubing and 2 inches (50 mm) for die cut specimens. The rate of jaw separation shall
be 20 ± 2 inches (500 ± 50 mm) per minute.
4.3.3 Low Temperature Flexibility
Three specimens, each 12 inches (300 mm) in length, and a mandrel selected in accordance with Table 2,
shall be conditioned at -55 ± 3°C (-67 ± 5°F) for 4 hours. For tubing sizes 3/4 or less, the specimens shall be
whole sections of tubing recovered on a stranded wire (nearest AWG which is larger than the sleeving
maximum inside diameter after unrestricted shrinkage). For tubing sizes larger than 3/4, the specimens shall
be 1/4-inch (6.3-mm) wide strips cut from tubing which has been recovered in accordance with 4.3. After 4
hours conditioning, and while still at the conditioning temperature, the specimens shall be wrapped around
the mandrel for not less than 360° in 10± 2 seconds. The specimens then shall be visually examined for
evidence of cracking.
4.3.4 Heat Shock
Three 6-inch (150-mm) specimens of tubing shall be conditioned for 4 hours in a 225 ± 3°C
(437 ± 5°F) oven. After conditioning, the specimens shall be removed from the oven, cooled to room
temperature, and visually examined for evidence of dripping, flowing, or cracking.
4.3.5 Heat Resistance
Three specimens of tubing prepared and measured in accordance with 4.3.2, shall be conditioned for 168
hours in a 150 ± 2°C (302 ± 4°F) oven. After conditioning, the specimens shall be removed from the oven,
cooled to room temperature, and tested for tensile strength and ultimate elongation in accordance with 4.3.2.
4.3.6 Copper Stability
Three 6-inch (150-mm) specimens of tubing shall be slid over snug- fitting, straight, clean, bare copper
mandrels, either solid or tubular. The specimens on the mandrels shall be conditioned for 24 hours in a
desiccator or similar humidity chamber at 90 to 95 percent relative humidity and
23 ± 3°C (73 ± 5°F). The specimens on the mandrels then shall be conditioned for 168 hours in a 1
50 ± 2°C (302 ± 4°F) oven. After conditioning, the specimens shall be removed from the oven and cooled to
23 ± 3°C (73 ± 5°F). The copper mandrels shall then be removed from the tubing and the tubing and copper
mandrels shall be examined. Darkening of the copper due to normal air oxidation shall not be cause for
rejection. The tubing shall be tested for ultimate elongation in accordance with 4.3.2.
4.3.7 Corrosive Effect
The tubing shall be tested for copper mirror corrosion in accordance with ASTM D 2671, Procedure A. The
specimens shall be conditioned for 16 hours at 135 ± 3°C (275 ± 5°F).
4.3.8 Fluid Resistance
Six specimens, three 6-inch (150-mm) tubing specimens, which shall be weighed prior to immersion, and
three tensile specimens prepared and measured in accordance with 4.3.2, shall be immersed for 24 hours in
each of the test fluids listed in Table 3 at the temperature specified. The volume of the fluid shall not be less
than 20 times that of the specimens. After conditioning, all the specimens shall be lightly wiped and air dried
for 30 to 60 minutes at 23 ± 3°C (73 ± °F). The three specimens intended for the tensile strength and
elongation tests shall then be tested in accordance with 4.3.2. The other three specimens shall be weighed
before and after immersion and the weight change calculated as a percentage.
4.4 REJECTION AND RETEST
Failure of any sample of tubing to comply with 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 submitted for acceptance. Before resubmitting, full particulars concerning the
rejection and the action taken to correct the defect shall be furnished to the inspector.
Page 4 SPECIFICATION RT-1116 Issue 6
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5. PREPARATION FOR DELIVERY
5.1 FORM
Unless otherwise specified, the tubing shall be supplied on spools.
5.2 PACKAGING
Packaging shall be in accordance with good commercial practice. The shipping container shall be not less
than 125 pound-test fiberboard.
5.3 MARKING
Each container of tubing shall be permanently and legibly marked with the size, quantity, manufacturer's
identification, and lot number.
Mandrel Diameter
SPECIFICATION RT-1116 Issue 6 Page 5
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TABLE 1
TUBING DIMENSIONS
As Supplied As Recovered
Inside Diameter Inside Diameter Wall Thickness
Size Minimum Maximum Minimum Maximum Nominal
in. mm. in. mm. in. mm. in. mm. in. mm.
1/4 0.250 6.35 0.125 3.175 0.028 0.71 0.042 1.07 0.035 0.89
3/8 0.375 9.50 0.187 4.75 0.032 0.81 0.048 1.21 0.040 1.02
1/2 0.500 12.70 0.250 6.35 0.040 1.02 0.056 1.42 0.048 1.21
3/4 0.750 19.05 0.375 9.50 0.046 1.16 0.068 1.72 0.057 1.45
1 1.000 25.40 0.500 12.70 0.059 1.49 0.081 2.05 0.070 1.78
1-1/2 1.500 38.10 0.750 19.05 0.079 2.00 0.111 2.81 0.095 2.41
2 2.000 50.80 1.000 25.40 0.094 2.38 0.126 3.20 0.110 2.79
3 3.000 76.20 1.500 38.10 0.105 2.66 0.145 3.68 0.125 3.18
TABLE 2
MANDREL DIMENSIONS FOR BEND TESTING
Mandrel Diameter
Tubing Size in. mm.
1/4 through 1/2 3/8 9.5
3/4 through 1-1/2 5/8 15.9
2 through 3 7/8 22.2
PROPERTY UNIT REQUIREMENT TEST METHOD
Page 6 SPECIFICATION RT-1116 Issue 6
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TABLE 3
REQUIREMENTS
PROPERTY UNIT REQUIREMENT TEST METHOD
PHYSICAL
Dimensions
Inches (mm)
In accordance with Table 1
Section 4.3.1
Longitudinal Change Percent +1, -10 ASTM D 2671
Tensile Strength psi (MPa) 2000 minimum (13.8)
Tensile Stress
at 100 percent elongation
psi (MPa)
1200 maximum (8.3) Section 4.3.2
ASTM D 2671
Ultimate Elongation Percent 300 minimum
Specific Gravity --- 1.55 maximum ASTM D 2671
Hardness Shore A 80 ± 10 ASTM D 2240
Low Temperature Flexibility
4 hours at -55°C (-67°F) --- No cracking Section 4.3.3
Heat Shock
4 hours at 225°C (437°F) No dripping, flowing, or
cracking Section 4.3.4
Heat Resistance
168 hours at 150°C (302°F)
Followed by tests for:
--- --- Section 4.3.5
Tensile Strength psi (MPa) 1500 minimum (10.3) Section 4.3.2
Ultimate Elongation Percent 300 minimum
Copper Stability
168 hours at 150°C (302°F)
Followed by test for;
No brittleness, glazing or
cracking of tubing; no pitting or
blackening of copper
Section 4.3.6
Ultimate Elongation Percent 200 minimum Section 4.3.2
ELECTRICAL
Dielectric Strength
Volts/mil
(kV/mm)
300 minimum (11.8)
ASTM D 2671
Volume Resistivity ohm-cm 109 minimum ASTM D 257
SPECIFICATION RT-1116 Issue 6 Page 7
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TABLE 3
REQUIREMENTS
(continued)
PROPERTY UNIT REQUIREMENT TEST METHOD
CHEMICAL
Corrosive Effect
16 hours at 135°C (275°F)
---
Noncorrosive
Section 4.3.7
ASTM D 2671
Flammability
Average time of burning
Seconds
15 maximum ASTM D 2671
Procedure A
Fungus Resistance
Followed by tests for:
Tensile Strength
Ultimate Elongation
Dielectric Strength
--- Rating less than 1 ASTM G 21
or
--- ISO 846 B
psi (MPa) 2000 minimum (13.8) ASTM D 2671
Section 4.3.2
Percent 300 minimum
Volts/mil
(kV/mm) 300 minimum (11.8) ASTM D 2671
Fluid Resistance
24 hours at 23°C (73°F)
JP-8 Fuel (MIL-DTL-83133)
Hydraulic Fluid (MIL-PRF-5606)
Anti-Icing Fluid (SAE-AMS1424)
Lubricating Oil (MIL-PRF-23699F )
Cleaning Compound (A-A-59133)
Water
Followed by tests for:
--- --- Section 4.3.8
Tensile Strength psi (MPa) 1500 minimum (10.3) Section 4.3.2
Ultimate Elongation Percent 300 minimum Section 4.3.2
Weight Increase Percent 15 maximum Section 4.3.8
Fluid Resistance
24 hours at 50°C (122°F)
DF-2 (A-A-52557)
JP-8 Fuel (MIL-DTL-83133)
Followed by tests for:
---
---
Tensile Strength psi (MPa) 1500 minimum (10.3) Section 4.3.2
Ultimate Elongation Percent 300 minimum Section 4.3.2
Weight Increase Percent 20 maximum Section 4.3.8
Fluid Resistance
24 hours at 71°C (160°F)
Hydraulic Fluid (MIL-PRF-6083)
Hydraulic Fluid (MIL-PRF-46170D )
Followed by tests for:
--- --- Section 4.3.8
Tensile Strength psi (MPa) 1500 minimum (10.3) Section 4.3.2
Ultimate Elongation Percent 300 minimum Section 4.3.2
Weight Increase Percent 15 maximum Section 4.3.8