CRN
Semirigid, flame-retardant, polyolefin
heat-shrinkable tubing
Heat-shrinkable CRN tubing is ideally CRN tubing has a broad range of uses CRN tubing is abrasion-resistant.
suited for wire strain-relief applications. including component protective covering Its superior chemical properties
It provides excellent strain-relief and and packaging. The flame-retardant permit satisfactory performance
insulation of weak points such as wire material is fabricated from radiation- after exposure to common chemicals
splices and terminations. CRN tubing crosslinked polyolefin and exhibits and solvents.
helps ensure a reliable connection excellent mechanical and chemical
because it transfers the flex stress properties. It meets major military Only a few sizes of CRN tubing are
away from typically sensitive points and industrial specifications for an required to cover a wide range of
such as solder and crimp joints. all-purpose, semirigid tubing. substrate diameters.
Temperature rating
Full recovery temperature: 135C
Continuous operating temperature: 55C to 135C
Specifications*
Type Raychem Military UL CSA
CRN Type 1 (colors) RT-360 Type 1 AMS-DTL-23053/6 Cl. 1 E35586 LR31929 (Black only)
CRN Type 2 (clear) RT-360 Type 2 AMS-DTL-23053/6 Cl. 2
*When ordering, always specify latest issue.
Dimensions (millimeters/inches)
W
Expanded as supplied
Fully recovered after heating
D d
Inside diameter Wall thickness
D (min.) d (max.) W
Expanded Recovered after Recovered after
Size as supplied heating heating**
3/64 1.2 0.046 0.6 0.023 0.51 0.08 0.020 0.003
1/16 1.6 0.063 0.8 0.031 0.51 0.08 0.020 0.003
3/32 2.4 0.093 1.2 0.046 0.51 0.08 0.020 0.003
1/8 3.2 0.125 1.6 0.062 0.51 0.08 0.020 0.003
3/16 4.8 0.187 2.4 0.093 0.64 0.08 0.025 0.003
1/4 6.3 0.250 3.2 0.125 0.64 0.08 0.025 0.003
3/8 9.5 0.375 4.8 0.187 0.76 0.08 0.030 0.003
1/2 12.7 0.500 6.4 0.250 0.76 0.08 0.030 0.003
3/4 19.0 0.750 9.5 0.375 0.89 0.12 0.035 0.005
**Wall thickness will be less if tubing recovery is restricted during shrinkage.
Ordering information
Colors Standard Black
Nonstandard Clear (not flame-retardant)
Size selection Always order the largest size that will shrink snugly over the component being covered.
Standard packaging 4-foot lengths
Ordering description Specify product name, size, and color; for example, CRN 1/4-0 (0 = Black).Specification values
Property Unit Requirement Requirement Method of test
Type 1 (Colors) Type 2 (Clear)
PhysicalDimensions mm (inches) See reverse See reverse ASTM D 2671
Longitudinal change percent 5 maximum 5 maximum ASTM D 2671
Tensile strength psi (MPa) 2000 (13.8) minimum 2000 (13.8) minimum ASTM D 2671
Ultimate elongation percent 200 minimum 200 minimum ASTM D 2671
4 4
Secant modulus psi (MPa) 2.5 x 10 (172) minimum 2.5 x 10 (172) minimum ASTM D 2671
(expanded)
Specific gravity 1.35 maximum 1.0 maximum ASTM D 792
Low-temperature flexibility No cracking No cracking AMS-DTL 23053
(4 hours at 55C/67F) ASTM D 2671
Procedure C
Heat shock No dripping, No dripping, AMS-DTL 23053
(4 hours at 250C/482F) flowing, or cracking flowing, or cracking ASTM D 2671
Heat resistance ASTM D 2671
(168 hours at 175C/347F)
Followed by test for:
Ultimate elongation percent 150 minimum 150 minimum ASTM D 2671
Electrical Dielectric strength volts/mil (volts/mm) 500 (19,680) minimum 500 (19,680) minimum ASTM D 2671
14 16
Volume resistivity ohm-cm 10 minimum 10 minimum ASTM D 2671
Chemical Copper mirror corrosion No removal of copper No removal of copper ASTM D 2671
(16 hours at 150C/302F) Procedure A
Copper contact corrosion No pitting or blackening No pitting or blackening ASTM D 2671
(168 hours at 150C/302F) of copper of copper Procedure B
Flammability Self-extinguishing Not applicable ASTM D 2671
within 1 minute; 25% Procedure B
of indicator burned
or charred; no falling,
burning particles.
Fungus resistance ISO 846
Method B
Followed by tests for:
Tensile strength psi (MPa) 2000 (13.8) minimum 2000 (13.8) minimum ASTM D 2671
Ultimate elongation percent 200 minimum 200 minimum ASTM D 2671
Dielectric strength volts/mil (volts/mm) 500 (19,680) minimum 500 (19,680) minimum ASTM D 2671
Water absorption percent 0.5 maximum 0.2 maximum ASTM D 2671
(24 hours at 23C/73F)
Fluid resistance ASTM D 2671
(24 hours at 23C/73F) in:
JP-8 Fuel (MIL-T-5624)
Skydrol* 500
Hydraulic fluid
(MIL-H-5606)
Aviation gasoline (100/130)
(MIL-G-5572)
Water
Followed by tests for:
Dielectric strength volts/mil (volts/mm) 400 (15,760) minimum 400 (15,760) minimum ASTM D 2671
Tensile strength psi (MPa) 1600 (11.0) minimum 1600 (11.0) minimum ASTM D 2671
Note: Consult RT-360 for specific details about test procedures.
Raychem is a trademark of Tyco Electronics Corporation.
*Trademark of the Monsanto Company.
Users should independently evaluate the suitability of the product for their application.
Tyco Electronics Corporation
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All information, including illustrations, is believed to be reliable. Users, however, should independently evaluate the suitability of each product for their application. Tyco Electronics Corporation makes
no warranties as to the accuracy or completeness of the information, and disclaims any liability regarding its use. Tyco Electronics Corporations only obligations are those in the Standard Terms and
Conditions of Sale for these products and in no case will Tyco Electronics Corporation be liable for any incidental, indirect, or consequential damages arising from the sale, resale, use, or misuse of the
product. Tyco Electronics Corporations Specifications are subject to change without notice. In addition, Tyco Electronics Corporation reserves the right to make changes in materials or processing
without notification to the Buyer which do not affect compliance with any applicable specification.
For more information about this product visit www.tycoelectronics.com
1988, 2002 Tyco Electronics Corporation Printed in USA 1654055 Revised 04/04