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PTFE Heat Shrink 4 to 1 Shrink Ratio
Approximate Ratio of Expanded ID to Recovery ID - Fractional Inch Sizes

 

STANDARD WALL (in)   STANDARD WALL (mm)
Ordered as Fractional ID Expanded ID Recovered After Heat Shrink Ordered as AWG Size # Expanded ID Min. Recovered After Heat Shrink
ID Max. Wall Thickness ID Max. Wall Thickness
Nom. Tol. Nom. Tol.
5/64 0.078 0.025 0.009 ±.002 5/64 1.98 0.64 0.23 ±.005
1/8 0.125 0.037 0.012 ±.002 1/8 3.18 0.94 0.31 ±.005
3/16 0.187 0.050 0.012 ±.002 3/16 4.75 1.27 0.31 ±.005
1/4 0.250 0.063 0.012 ±.002 1/4 6.35 1.60 0.31 ±.005
5/16  0.312 0.078 0.012 ±.002 5/16 7.92 1.98 0.31 ±.005
3/8 0.375 0.096 0.012 ±.002 3/8 9.53 2.44 0.31 ±.005
7/16 0.438 0.112 0.012 ±.002 7/16 11.13 2.84 0.31 ±.005
1/2 0.500 0.144 0.015 ±.004 1/2 12.70 3.66 0.38 ±.10
9/16 0.562  0.155 0.015 ±.004 9/16 14.27 3.94 0.38 ±.10
5/8 0.625 0.178 0.015 ±.004 5/8 15.88 4.52 0.38 ±.10
11/16 0.687 0.198 0.015 ±.004 11/16 17.45 5.03 0.38 ±.10
3/4 0.750 0.224 0.015 ±.004 3/4 19.05 5.69 0.38 ±.10
7/8 0.875 0.244 0.015 ±.004 7/8 22.23 6.20 0.38 ±.10
1 1.000 0.278 0.015 ±.004 1 25.40 7.06 0.38 ±.10
1-1/4 1.250 0.347 0.015 ±.004 1-1/4 31.75 8.81 0.38 ±.10
1-1/2 1.500 0.400 0.015 ±.004 1-1/2 38.10 10.16 0.38 ±.10
1-3/4 1.750 0.450 0.015 ±.004 1-3/4 44.45 11.43 0.38 ±.10
2 2.000 0.520 0.020 ±.005 2 50.80 13.21 0.51 ±.13
2-1/4 2.250 0.585 0.020 ±.005 2-1/4 57.15 14.86 0.51 ±.13
2-1/2 2.500 0.650 0.020 ±.005 2-1/2 63.50 16.51 0.51 ±.13
2-3/4 2.750 0.710 0.020 ±.005 2-3/4 69.85 18.03 0.51 ±.13
3 3.000 0.775 0.020 ±.005 3 76.20 19.68 0.51 ±.13
3-1/4 3.250 0.835 0.020 ±.005 3-1/4 82.50 21.21 0.51 ±.13
3-1/2 3.500 0.900 0.025 ±.005 3-1/2 88.90 22.86 0.64 ±.13
3-3/4 3.750 0.960 0.025 ±.005 3-3/4 92.95 24.38 0.64 ±.13
4 4.000 1.025 0.025 ±.005 4 101.60 26.03 0.64 ±.13

Complies with AMS-DTL-23053/12. UL File # E64007 / CSA File # 082582

 

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