Tyco Electronics Corporation 300 Constitution Drive Menlo Park, CA 94025 USA Specification This Issue: Date: Replaces: RT-1148 Issue 8 Oct 6, 2005 Issue 7 Tyco Modified Fluoroelastomer Tubing Flexible, Abrasion Resistant, Heat-Shrinkable 1.0 Scope This specification covers the requirements for one type of highly flexible, electricalinsulating extruded tubing whose diameter will reduce to a predetermined size upon the application of heat in excess of 175C (347F). 2.0 Applicable Documents This specification takes precedence over documents referenced herein. Unless otherwise specified, the latest issue of the referenced document applies. The following documents form a part of this specification to the extent specified herein. 2.1 Government Furnished Documents Military MIL-DTL-83133 Turbine Fuels, Aviation, Kerosene Types, Nato F-34 (JP-8), Nato F-35 and JP-8+100 SAE-AMS-1424 Anti-Icing and Deicing - Defrosting Fluid MIL-PRF-46170 Hydraulic Fluid, Rust Inhibited, Fire-resistant, Synthetic Hydrocarbon Base Federal A-A-59133 A-A-52557 2.2 Commercial Item Description Cleaning Compound, High Pressure (Steam) Cleaner Fuel Oil, Diesel; for Posts, Camps and Stations Other Publications American Society for Testing & Materials (ASTM) D 4814 Automotive Spark-Ignition Engine Fuel Std. Spec. for D 257 Standard Test Methods for D-C Resistance or Conductance of Insulating Materials D 2240 Test Method for Rubber Property -- Durometer Hardness D 2671 Method of Testing Heat-Shrinkable Tubing for Electrical Use G-21 Standard Recommended Practice for Determining Resistance to Synthetic Polymeric Materials to Fungi (Copies of ASTM publications may be obtained from the American Society for Testing & Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103.) If this document is printed it becomes uncontrolled. Check for the latest revision. (c)2005 Tyco Electronics Corporation. All rights reserved Page 2 SPECIFICATION RT-1148 ISSUE 8 3.0 3.1 Requirements Material The tubing shall be fabricated from thermally stabilized, modified fluoroelastomer and shall be crosslinked by irradiation. 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 the requirements of Table 3. 4.0 4.1 4.1.1 Quality Assurance Provisions Classification of Tests Qualification Tests Qualification tests are those performed on samples submitted for qualification as satisfactory products 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 and Hardness. 4.2 4.2.1 Sampling Instructions Qualification Test Samples Qualification test samples shall consist of 50 feet (15 m) of tubing of the size specified. Qualification of any size within each size range will qualify all sizes in the same range. Range of Sizes 1/4 through 3/4 7/8 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 in accordance with 4.3.1. Prior to all testing, the test specimens (and measurement gauges, when applicable) shall be conditioned for 3 hours at 23 3C (73 5F) and 50 5 percent relative humidity. All ovens shall be of the mechanical convection type 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. (c)2005 Tyco Electronics Corporation. All rights reserved SPECIFICATION RT-1148 ISSUE 8 4.3.1 Page 3 Dimensions and Longitudinal Change Measure three 6 inch (152 mm) specimens of tubing, as supplied, for length 1/32 inch ( 1 mm) and inside diameter in accordance with ASTM D 2671. Condition these specimens for 10 minutes in a 200 5C (392 9F) oven or equivalent, cool to 23 3C (73 5F) and then remeasure. Calculate longitudinal change as follows: C = Where: C L0 L1 = = = L1 - L0 x 100 L0 Longitudinal Change [Percent] Length Before Conditioning [inches (mm)] Length After Conditioning [inches (mm)] 4.3.2 Tensile Strength, Tensile Stress and Elongation Test three specimens of tubing for tensile strength, tensile stress and elongation in accordance with ASTM D 2671. For tubing sizes 3/8 and smaller, 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 have1 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 (51 mm) for die-cut specimens. The rate of jaw separation shall be 20 2 inches (508 50 mm) per minute. 4.3.3 Low Temperature Flexibility Condition three specimens, each 12 inches (300 mm) in length and a mandrel selected in accordance with Table 2, at -65 5C (-85 9F) 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 4.3.1. After 4 hours conditioning and while still at the conditioning temperature, wrap the specimens around the mandrel for not less than 360 degrees in 10 2 seconds then visually examine the specimens for evidence of cracking. 4.3.4 Heat Shock Three 6 inch (152 mm) specimens of tubing shall be conditioned for 4 hours in a 225 5C (437 9F) oven. After conditioning, remove the specimens from the oven, cool to room temperature and bend through 180 degrees in 2 to 4 seconds over a mandrel selected in accordance with Table 2. Visually examine the specimens for evidence of dripping, flowing or cracking. Any side-cracking caused by flattening of the specimen on the mandrel shall not constitute failure. If this document is printed it becomes uncontrolled. Check for the latest revision. (c)2005 Tyco Electronics Corporation. All rights reserved Page 4 SPECIFICATION RT-1148 ISSUE 8 4.3.5 Heat Resistance Three 6 inch (152 mm) specimens of tubing shall be conditioned for 168 hours in a 150 3C (302 5F) oven. After conditioning, remove the specimens from the oven, cool to room temperature and test for ultimate elongation in accordance with 4.3.2. 4.3.6 Copper Stability Three 6 inch (152 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 25 3C (77 5F). The specimens on the mandrels then shall be conditioned for 168 hours in a 150 2C (302 4F) oven. After conditioning, the specimens shall be removed from the oven and cooled to 23 3C (73 5F). 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 Dielectric Strength The dielectric strength shall be determined by following the ASTM D 2671 procedure for dielectric breakdown. When dielectric breakdown occurs the thickness measurements for calculating dielectric strength shall be made adjacent to the point of breakdown and the dielectric strength shall be calculated in volts per mil. 4.3.8 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 175 3C (347 5F). 4.3.9 Fluid Resistance Six specimens, three 6 inch (152 mm) tubing specimens, which shall be weighed prior to immersion and three tensile specimens prepared and measured in accordance with 4.3.1, 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 45 15 minutes at 23 3C (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 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 the rejection and the action taken to correct the defect shall be furnished the inspector. If this document is printed it becomes uncontrolled. Check for the latest revision. (c)2005 Tyco Electronics Corporation. All rights reserved SPECIFICATION RT-1148 ISSUE 8 Page 5 5.0 5.1 Preparation For Delivery Form Unless otherwise specified, the tubing shall be supplied on spools. 5.2 Packaging The tubing shall be packaged in accordance with good commercial practice. The exterior shipping container shall not be less than 125-pound-test fiberboard. 5.3 Marking Each bundle or container of tubing shall be permanently and legibly marked with the size, quantity, manufacturer's identification and a lot number. If this document is printed it becomes uncontrolled. Check for the latest revision. (c)2005 Tyco Electronics Corporation. All rights reserved Page 6 SPECIFICATION RT-1148 ISSUE 8 TABLE 1 TUBING DIMENSIONS Expanded As Supplied Inside Diameter Minimum mm. in. Inside Diameter Maximum mm. in. 1/4 0.250 6.35 0.125 3.18 0.028 0.71 0.042 1.06 0.035 0.88 3/8 0.375 9.53 0.187 4.75 0.028 0.71 0.042 1.06 0.035 0.88 1/2 0.500 12.70 0.250 6.35 0.028 0.71 0.042 1.06 0.035 0.88 5/8 0.625 15.87 0.312 7.92 0.035 0.88 0.049 1.24 0.042 1.06 3/4 0.750 19.05 0.375 9.53 0.035 0.88 0.049 1.24 0.042 1.06 7/8 0.875 22.22 0.437 11.09 0.035 0.88 0.055 1.39 0.045 1.14 1 1.000 25.40 0.500 12.70 0.038 0.96 0.060 1.52 0.049 1.24 1-1/4 1.250 31.75 0.625 15.87 0.040 1.00 0.070 1.77 0.055 1.39 1-1/2 1.500 38.10 0.750 19.05 0.040 1.00 0.070 1.77 0.055 1.39 2 2.000 50.80 1.000 25.40 0.048 1.21 0.082 2.08 0.065 1.63 3 3.000 76.20 1.500 38.10 0.048 1.21 0.082 2.08 0.065 1.63 Size Recovered Dimensions -- After Heating Wall Thickness Minimum Maximum mm. mm. in. in. TABLE 2 Mandrel Dimensions Tubing 1/4 to 3/8 inclusive 1/2 to 3 inclusive Mandrel Diameter in. mm. 5/16 7.9 7/16 11.1 If this document is printed it becomes uncontrolled. Check for the latest revision. (c)2005 Tyco Electronics Corporation. All rights reserved Nominal mm. in. SPECIFICATION RT-1148 ISSUE 8 Page 7 TABLE 3 Requirements PROPERTY PHYSICAL Dimensions Longitudinal Change Tensile Strength Tensile Stress at 100% elongation Ultimate Elongation Specific Gravity Hardness Low Temperature Flexibility 4 hours at -65 5C (-85 9F) Heat Shock 4 hours at 225 5C (437 9F) Heat Resistance 168 hours at 150 3C (302 5F) Followed by test for: Tensile Strength Ultimate Elongation Copper Stability 168 hours at 150 2C (302 4F) Followed by test for: Ultimate Elongation ELECTRICAL Dielectric Strength UNIT REQUIREMENT TEST METHOD inches (mm) percent psi (MPa) psi (MPa) percent Section 4.3.1 ASTM D 2671 Section 4.3.2 ASTM D 2671 Shore A --- In accordance with Table 1 -10 to +2 2500 (17.2) minimum 1500 (10.3) maximum 350 minimum 1.5 maximum 80 10 No cracking ASTM D 2671 ASTM D 2240 Section 4.3.3 --- No dripping, flowing or cracking Section 4.3.4 --- --- Section 4.3.5 psi percent 2000 (13.8) minimum 300 minimum No brittleness, glazing or cracking of tubing; no pitting or blackening of copper 200 minimum Section 4.3.2 percent Section 4.3.6 Section 4.3.2 300 (11,800) minimum Section 4.3.7 Volume Resistivity Volts/mil (Volts/mm) ohm-cm 1010 minimum ASTM D 257 CHEMICAL Flammability seconds Self-extinguishing within 15 seconds; no dripping or flowing; no burning or charring of indicator Noncorrosive ASTM D 2671 Corrosive Effect 16 hours at 175 3C (347 5F) Fungus Resistance Fluid Resistance 24 hours at 25 3C (77 5F) in: Cleaning Compound (A-A-59133) Gasoline Automotive (ASTM D 4814) JP-8 Fuel (MIL-DTL-83133) Water Followed by tests for: Tensile Strength Ultimate Elongation Weight Increase --- Rating of 1 or less --- psi (MPa) percent percent 1800 (11.0) minimum 300 minimum 20 maximum If this document is printed it becomes uncontrolled. Check for the latest revision. (c)2005 Tyco Electronics Corporation. All rights reserved Section 4.3.8 ASTM D 2671 ASTM G 21 Section 4.3.9 Section 4.3.2 Section 4.3.9 Page 8 SPECIFICATION RT-1148 ISSUE 8 TABLE 3 Requirements CHEMICAL (Continued) Fluid Resistance 24 hours at 50 3C (122 5F) in: Deicing Fluid (SAE-AMS-1424) Hydraulic Fluid (MIL-PRF-46170) Diesel Fuel (A-A-52557) 5% Salt Solution (ASTM D 632) Followed by tests for: Tensile Strength Ultimate Elongation Weight Increase Fluid Resistance 24 hours at 100 3C (212 5F) in: Hydraulic Fluid (MIL-PRF-46170) Followed by tests for: Tensile Strength Ultimate Elongation Weight Increase --- --- Section 4.3.9 psi (MPa) percent percent --- 1800 (11.0) minimum 300 minimum 10 maximum --- Section 4.3.2 psi (MPa) percent percent 1800 (11.0) minimum 300 minimum 10 maximum If this document is printed it becomes uncontrolled. Check for the latest revision. (c)2005 Tyco Electronics Corporation. All rights reserved Section 4.3.9 Section 4.3.9 Section 4.3.2 Section 4.3.9