Tyco Electronics Corporation 300 Constitutional Drive Menlo Park, CA 94025 USA Specification This Issue: Date: Replaces: RT-511 Issue 7 January 25, 2010 Issue 6 THERMOFIT(R) NT-FR TUBING Neoprene, Fluid Resistant, Flexible, Heat-Shrinkable 1.0 SCOPE This specification covers the requirements for one type of highly flexible, electrically insulating, extruded tubing whose diameter will reduce to a predetermined size upon the application of heat in excess of 135C (275F). 2.0 APPLICABLE DOCUMENTS This specification takes precedence over documents references 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-H-5606 MIL-L-7808 MIL-A-8243 MIL-L-23699 MIL-F-46162 MIL-H-46170 Hydraulic Fluid, Petroleum Base, Aircraft, Missile, and Ordnance Lubricating Oil, Aircraft Turbine Engine, Synthetic Base Anti-Icing and Deicing - Defrosting Fluid Lubricating Oil, Aircraft Turbine Engines, Synthetic Base Fuel, Diesel, Referee Grade Hydraulic Fluid, Rust Inhibited, Fire-Resistant, Synthetic Hydrocarbon Base SAE-MIL-DTL-81333 Turbine Fuels, Aviation, Kerosene Types, NATO F-34 (JP-8), NATO F-35, and JP8+100 Federal A-A-694 P-C-437 Sodium Chloride, Technical Cleaning Compound, High Pressure (Steam) Cleaner If this document is printed it becomes uncontrolled. Check for the latest revision. Page 2 2.2 SPECIFICATION RT-511 ISSUE 7 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 Method of 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). 3.0 REQUIREMENTS 3.1 MATERIAL The tubing shall be fabricated from a stabilized, flame resistant, modified neoprene 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 the requirements of Table 3. 4.0 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. If this document is printed it becomes uncontrolled. Check for the latest revision. SPECIFICATION RT-511 ISSUE 7 4.1.2 Page 3 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 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 Range 1/8 through 7/8 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 175 5C (347 9F) oven. 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 over 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. Page 4 4.3.1 SPECIFICATION RT-511 ISSUE 7 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 175 5C (347 9F) oven, cooled to 23 3C (73 5F), 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 = Where: 4.3.2 C L0 L1 = = = L1 - L0 x 100 L0 Longitudinal Change [Percent] Length Before Conditioning [Inches (mm)] Length After Conditioning [Inches (mm)] 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 sizes 3/8 and smaller, the specimens shall be full sections of tubing. For sizes 1/2 and larger, the specimens shall be 1/4-inch (6.3-mm) wide strips. 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 (51 mm) for strip 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 -70 3C (-94 5F) for 4 hours. For tubing sizes 5/8 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 5/8, the specimens shall be 1/4inch (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 (6.28 rad) in 10 2 seconds. The specimens then shall be visually examined for evidence of cracking. If this document is printed it becomes uncontrolled. Check for the latest revision. SPECIFICATION RT-511 ISSUE 7 4.3.4 Page 5 Heat Shock Three 6-inch (150-mm) specimens of tubing shall be conditioned for 4 hours in a 200 3C (392 5F) oven. After conditioning, the specimens shall be removed form 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 121 3C (250 5F) oven. After conditioning, the specimens shall be removed from the oven, cooled to 23 3C (73 5F), 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 25 3C (77 5F). The specimens on the mandrels then shall be conditioned for 168 hours in a 121 3C (250 5F) oven. After conditioning, the specimens shall be removed form the oven, cooled to 23 3C (73 5F). The copper mandrels shall then be removed form 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 elongation in accordance with 4.3.2. 4.3.7 Dielectric Strength The dielectric strength shall be determined in accordance with 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, Method A. The specimens shall be conditioned for 16 hours at 150 3C (302 5F). If this document is printed it becomes uncontrolled. Check for the latest revision. Page 6 4.3.9 SPECIFICATION RT-511 ISSUE 7 Fluid Resistance Six specimens, three 6-inch tubing specimens 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 3C (73 5). 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 resubmitted for acceptance. Before resubmitting, full particulars concerning the rejection and the action taken to correct the defect shall be furnished to the inspector. 5.0 PREPARATION FOR DELIVERY 5.1 PACKAGING Packaging shall be in accordance with good commercial practice. The shipping container shall be not less than 125 pound-test fiberboard. 5.2 MARKING Each container of tubing shall be permanently and legibly marked with the size, quantity, manufacturer's identification, and lot number. If this document is printed it becomes uncontrolled. Check for the latest revision. SPECIFICATION RT-511 ISSUE 7 Page 7 TABLE 1 Tubing Dimensions Size 1/8 3/16 1/4 3/8 1/2 5/8 3/4 7/8 1 1-1/4 1-1/2 1-3/4 2 3 AS SUPPLIED Inside Diameter Minimum mm. in. .125 3.18 .187 4.75 .250 6.35 .375 9.52 .500 12.70 .625 15.87 .750 19.05 .875 22.22 1.000 25.40 1.250 31.75 1.500 38.10 1.750 44.45 2.000 50.80 3.000 76.20 Inside Diameter Maximum mm. in. .061 1.55 .100 2.54 .143 3.63 .214 5.45 .286 7.25 .357 9.06 .428 10.88 .500 12.70 .570 14.48 .714 18.13 .857 21.76 1.000 25.40 1.140 28.96 1.710 43.54 RECOVERED Wall Thickness Minimum Maximum mm. mm. in. in. .019 0.48 .035 0.91 .023 0.58 .043 1.09 .025 0.63 .045 1.14 .030 0.76 .050 1.27 .033 0.83 .063 1.60 .037 0.93 .067 1.70 .042 1.06 .072 1.82 .050 1.27 .080 2.03 .050 1.27 .090 2.28 .067 1.70 .107 2.71 .075 1.90 .115 2.92 .087 2.20 .127 3.22 .090 2.28 .130 3.30 .105 2.65 .145 3.67 Nominal mm. in. .027 0.69 .033 0.83 .035 0.88 .040 1.01 .048 1.21 .052 1.32 .057 1.44 .065 1.65 .070 1.77 .087 2.20 .095 2.41 .107 2.71 .110 2.79 .125 3.18 TABLE 2 Mandrel Dimensions for Bend Testing Tubing Size 1/8 through 5/8 through 1-1/4 through 3 Mandrel Diameter 1/2 1 2 in. 3/8 5/8 7/8 1-1/8 If this document is printed it becomes uncontrolled. Check for the latest revision. mm. 9.5 15.9 22.2 28.6 Page 8 SPECIFICATION RT-511 ISSUE 7 TABLE 3 Requirements PROPERTY PHYSICAL Dimensions Longitudinal Change Tensile Strength Tensile Stress at 100 percent elongation Ultimate Elongation Specific Gravity Hardness Low Temperature Flexibility 4 hours at -70 3C (-94 5F) Heat Shock 4 hours at 200 3C (392 5F) Heat Resistance (Aging) 168 hours at 121 3C (250 5F) Followed by tests for: Tensile Strength Ultimate Elongation Copper Stability 168 hours at 121 3C (250 5F) Followed by test for: Ultimate Elongation ELECTRICAL Dielectric Strength Volume Resistivity CHEMICAL Corrosive Effect 16 hours at 150 3C (302 5F) Flammability Fungus Resistance Followed by tests for: Tensile Strength Ultimate Elongation Dielectric Strength UNIT REQUIREMENT TEST METHOD Inches (mm) Percent psi (MPa) psi (MPa) In accordance with Table 1 +1, -8 1500 minimum (10.3) 1500 maximum(10.3) Section 4.3.1 ASTM D 2671 Percent --Shore A --- 250 minimum 1.5 maximum 80 5 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 (MPa) Percent --- 1200 minimum (8.3) 175 minimum No brittleness, glazing or cracking of tubing; no pitting or blackening of copper. 175 minimum Section 4.3.2 ASTM D 2671 Section 4.3.6 Volts/mil (Volts/mm) ohm-cm 300 minimum (11,800) Section 4.3.7 ASTM D 2671 ASTM D 257 --- Noncorrosive Seconds Self-extinguishing within 15 seconds psi (Mpa) percent Volts per mil (volts per mm) 1500 minimum (10.3) 250 minimum 300 minimum (11,800) Percent 1011 minimum If this document is printed it becomes uncontrolled. Check for the latest revision. Section 4.3.2 ASTM D 2671 Section 4.3.2 Section 4.3.8 ASTM D 2671 ASTM D 2671 Procedure A ISO 846 Method B Section 4.3.2 ASTM D 2671 ASTM D 2671 SPECIFICATION RT-511 ISSUE 7 Page 9 TABLE 3 Requirements (continued) PROPERTY CHEMICAL (continued) Fluid Resistance 24 hours at 25 3C (77 5F) Hydraulic Fluid (MIL-H-5606) Lubricating Oil (MIL-L-23699) Hydraulic Fluid (MIL-H-46170) Isopropyl Alcohol De-Icing Fluid (MIL-A-8243) Water Cleaning Fluid (P-C-437) Followed by tests for: Tensile Strength Ultimate Elongation Weight Increase Fluid Resistance 24 hours at 25 3C (77 5F) in: JP-8 Fuel (MIL-T-83133) Aviation Gasoline 100/130 (MIL-G-5572) Lubricating Oil (MIL-L-7808) Diesel Fuel (MIL-F-46162) Followed by tests for: Tensile Strength Ultimate Elongation Weight Increase Fluid Resistance 24 hours at 71 3C (160 5F) in: Hydraulic Fluid (MIL-H-46170) Followed by tests for: Tensile Strength Ultimate Elongation Weight Increase UNIT REQUIREMENT TEST METHOD --- --- Section 4.3.9 psi (MPa) Percent Percent --- 1000 minimum (6.9) 250 minimum 5 maximum --- Section 4.3.2 psi (MPa) Percent Percent --- 1000 minimum (6.9) 250 minimum 20 maximum --- psi (MPa) Percent Percent 1000 minimum (6.9) 250 minimum 1/8 through 7/8: 20 maximum 1 through 3: 15 maximum If this document is printed it becomes uncontrolled. Check for the latest revision. Section 4.3.9 Section 4.3.9 Section 4.3.2 Section 4.3.9 Section 4.3.9 Section 4.3.2 Section 4.3.9