Tyco Electronics Corporation 300 Constitutional Drive Menlo Park, CA 94025 USA Specification This Issue: Date: Replaces: RT-350 Issue 17 April 9, 2004 Issue 16 THERMOFIT(R) RNF-100 TUBING Polyolefin, Flexible, Heat-Shrinkable 1. SCOPE This specification covers the requirements for two types of flexible electrical insulating, extruded tubing whose diameter will reduce to a predetermined size upon the application of heat in excess of 121C (250F). 1.1 TYPE 1 Type 1 tubing shall be flame-retardant and shall be black, white, red, yellow, or blue unless otherwise specified. 1.2 TYPE 2 Type 2 tubing shall not be flame-retardant and shall be clear. 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 ASTM D 910 MIL-PRF-5606 MIL-T-83133 MIL-STD-104 2.2 Gasoline, Aviation, Grades 80/87, 100, and 115/145 Hydraulic Fluid, Petroleum Base, Aircraft, Missile and Ordnance Turbine Fuel, Aviation, Grade JP-8 Limits for Electrical Insulation Color OTHER PUBLICATIONS American Society for Testing and Materials (ASTM) D 910 Standard Spec. for Aviation Gasolines 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.) 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 Varembe, CH-1211 Geneva 20, Switzerland or via the ISO website at http://www.iso.ch/iso/en/ISOOnline.frontpage) If this document is printed it becomes uncontrolled. Check for the latest revision. Page 2 SPECIFICATION RT-350 ISSUE 17 3. REQUIREMENTS 3.1 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. 3.2 PROPERTIES The tubing shall meet 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 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. 4.2 SAMPLING INSTRUCTIONS 4.2.1 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 4.2.2 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. 4.3 TEST PROCEDURES Condition test specimens and measurement gauges at 23 3C (73 5F) 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 5C (392 9F) 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. SPECIFICATION RT-350 ISSUE 17 4.3.1 Page 3 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 5C (392 9F) oven, cool to 23 3C (73 5F) 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 = Where: 4.3.2 L1 - L0 x 100 L0 C = Longitudinal Change [Percent] L0 = Length Before Conditioning [Inches (mm)] L1 = Length After Conditioning [Inches (mm)] 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. 4.4 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 defects and 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 or in lengths of 48 +1, -0 inches (1220 +25.4, -0 mm) 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. If this document is printed it becomes uncontrolled. Check for the latest revision. Page 4 SPECIFICATION RT-350 ISSUE 17 TABLE 1 Tubing Dimensions Size 3/64 1/16 3/32 1/8 3/16 1/4 3/8 1/2 3/4 1 1-1/4 1-1/2 2 3 4 5 As Supplied Inside Diameter Minimum mm. in. .046 1.17 .063 1.60 .093 2.36 .125 3.17 .187 4.74 .250 6.35 .375 9.50 .500 12.70 .750 19.05 1.000 25.40 1.250 31.75 1.500 38.10 2.000 50.80 3.000 76.20 4.000 101.60 5.000 127.00 Inside Diameter Maximum mm. in. .023 0.58 .031 0.79 .046 1.17 .062 1.57 .093 2.36 .125 3.17 .187 4.74 .250 6.35 .375 9.50 .500 12.70 .625 14.30 .750 19.05 1.000 25.40 1.500 38.10 2.000 50.80 2.500 63.50 As Recovered Wall Thickness Minimum Maximum mm. mm. in. in. .013 0.33 .019 0.48 .014 0.35 .020 0.50 .017 0.43 .023 0.58 .017 0.43 .023 0.58 .017 0.43 .023 0.58 .022 0.56 .028 0.71 .022 0.56 .028 0.71 .022 0.56 .028 0.71 .027 0.69 .033 0.84 .030 0.76 .040 1.01 .034 0.86 .046 1.17 .034 0.86 .046 1.17 .038 0.96 .052 1.32 .042 1.06 .058 1.47 .046 1.16 .064 1.63 .051 1.30 .069 1.75 TABLE 2 Mandrel Dimensions for Bend Testing Tubing Size 3/64 to 1/4 inclusive 3/8 to 5 inclusive Mandrel Diameter mm. in. 5/16 7.9 3/8 9.5 If this document is printed it becomes uncontrolled. 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Nominal mm. in. .016 0.40 .017 0.43 .020 0.50 .020 0.50 .020 0.50 .025 0.64 .025 0.64 .025 0.64 .030 0.76 .035 0.88 .040 1.01 .040 1.01 .045 1.14 .050 1.27 .055 1.39 .060 1.52 SPECIFICATION RT-350 ISSUE 17 Page 5 TABLE 3 Requirements PROPERTY PHYSICAL Dimensions UNIT Longitudinal Change Tensile Strength Percent psi (MPa) Ultimate Elongation Secant Modulus (Expanded) Percent psi (MPa) Specific Gravity Low Temperature Flexibility 4 hours at -55 1C (-67 2F) ----- Heat Shock 4 hours at 250 3C (482 5F) --- Heat Resistance 168 hours at 175 2C (347 4F) Followed by test for: Ultimate Elongation Color Color Stability 48 hours at 175 2C (347 4F) ELECTRICAL Dielectric Strength Volume Resistivity Inches (mm) Followed by test for: Ultimate Elongation TEST METHOD Section 4.3.1 ASTM D 2671 In accordance with Table 1 +0, -5 1500 minimum (10.3) 200 minimum 2.5 x 104 maximum (172) 1.35 maximum No cracking In accordance with Table 1 +0, -5 1500 minimum (10.3) 200 minimum 2.5 x 104 maximum (172) 1.0 maximum No cracking --- No dripping, flowing or cracking --- No dripping, flowing or cracking --- ASTM D 2671 Percent ----- 150 minimum MIL-STD-104 MIL-STD-104 150 minimum ----- MIL-STD-104 ASTM D 2671 Volts/mil (volts/mm) ohm-cm 500 minimum (19,680) 1014 minimum 500 minimum (19,680) 1016 minimum NOTE 1 ASTM D 2671 ASTM D 2671 No removal of copper No pitting or blackening of copper No brittleness, glazing, cracking, or severe discoloration of tubing ASTM D 2671 Procedure A ASTM D 2671 Procedure B --- No removal of copper No pitting or blackening of copper No brittleness, glazing, cracking, or severe discoloration of tubing Percent 200 minimum 200 minimum CHEMICAL Copper Mirror Corrosion 16 hours at 175 -2C (347 4F) Copper Contact Corrosion --168 hours at 160 2C (320 4F) Copper Stability 168 hours at 160 2C (320 4F) REQUIREMENT TYPE 1 TYPE 2 If this document is printed it becomes uncontrolled. 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Section 4.3.2 ASTM D 2671 ASTM D 2671 ASTM D 2671 Table 2 ASTM D 2671 Procedure C Table 2 ASTM D 2671 Page 6 SPECIFICATION RT-350 ISSUE 17 TABLE 3 Requirements (continued) PROPERTY CHEMICAL (continued) Flammability UNIT TYPE 1 TYPE 2 TEST METHOD --- --- ASTM D 2671 Procedure B Water Absorption 24 hours at 23C (73F) Fluid Resistance 24 hours at 23C (73F) in: JP-8 Fuel (MIL-T-83133) Skydrol* 500 Hydraulic Fluid (MIL-PRF-5606) Aviation Gasoline (100) (ASTM D 910) Water Followed by tests for: Dielectric Strength Percent Selfextinguishing within 1 minute, 25% maximum flag burn 0.5 maximum 0.2 maximum ASTM D 2671 --- --- --- ASTM D 2671 Volts/mil (volts/mm) psi (MPa) 400 minimum (15,760) 1000 minimum (6.9) 400 minimum (15, 760) 1000 minimum (6.9) Tensile Strength Fungus Resistance Followed by tests for: Tensile Strength Ultimate Elongation Dielectric Strength ISO 846 Method B psi (Mpa) percent Volts per mil (volts per mm) 1500 minimum (10.3) 200 minimum 500 minimum (19,680) 1500 minimum (10.3) 200 minimum 500 minimum (19,680) Section 4.3.2 ASTM D 2671 ASTM D 2671 *Trademark of the Monsanto Company NOTE 1: Recover the specimens on the metal mandrels for 10 minutes, minimum, at 175 3C (347 5F) or until the tubing is completely shrunk on the mandrels. 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