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Heat - Shrinkable Products

PWC-SR- Series
4 to 1 (Highly Over Expanded Semi-Rigid Dual Wall)

PWC-SR-421 series Shrink Tubing is a Semi-Rigid cross linked polyolefin heat shrinkable tubing with an internal meltable sealant. Both the outer jacket and the adhesive are highly flame retardant. A shrink ration in excess of 4-1 allows a few sizes to cover a wide range of component and splice diameters. Recommended for applications requiring fluid and temperature resistance, environmental sealing and outstanding electrical properties.


Part Number Size Expanded ID Recovered ID Recovered Wall
InchmmInchmmInchmm
PWC421-SR-228-01 .2285.80.0501.26.0471.20
PWC421-SR-295-02 .2957.50.0651.64.0601.52
PWC421-SR-429-03 .42911.90.0942.40.0751.91
PWC421-SR-701-04 .70117.80.1754.45.0952.41
Available with adhesive in 4 foot lengths. Standard color is Black.

PhysicalTest MethodTypical Value
Tensile Strength (psi)ASTM-D6381500 Min.
Elongation(%)ASTM-D638250 Min.
Cold Impact (-55C) ASTM-D746 No Cracking
Heat Shock (4 Hrs @ 250C) Mil-I-23053 No Cracking
Secant Modulus ASTM-D882 2.5 x 10(4) Max.
Longitudinal Change Mil-I-23053 +5 / -15
Dielectric Strength ASTM-D876 300 Min.
Volume Resistivity ASTM-D876 10(10) ohm-cm
Corrosion UL224 No Corrosion
Water Absorption(%) (23C@24Hrs) ASTM-D570 1.0 Max.
Flammability UL224 Pass
Operating Temperature Range UL224 -40C / +135C
Voltage Rating UL224 600 Volt
*Above values are typical performance data and should not be used as design data

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