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#SH421 DAFLON 4:1 Shrinkable PTFE Tubing (MIL-I-23053/12, AMS-DTL-23053/12)


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Description: DAFLON SH421 Shrinkable PTFE Tubing recovers to approximately 25% of its expanded size when heated to the gel point (621°F). Thus it is now possible to use shrinkable PTFE tubing, with its excellent chemical and physical properties, over objects which require more than the standard 2:1 shrink down ratio.

Note: Tubing should be allowed to recover at least 50%.

Conforms to Mil-I-23053/12, Class 5, and AMS-3584,.PTFE resins meet UL94 V-0.

This series is RoHS compliant.

DAFLON 4:1 Shrinkable PTFE Tubing
DABURN
Cat. No.
Minimum
I.D. As Supplied
Recovered (After Heating)Standard
Package
MIL. Spec.
23053/12
I.D. MaxNom. Wall Thickness*
SizeIN.MM.IN.MM.IN.MM.
SH421-5/64 5/64" 0.078 1.98 0.025 0.64 0.009 0.23 100' -501
SH421-1/8 1/8" 0.125 3.18 0.038 0.97 0.010 0.25 100' -502
SH421-3/16 3/16" 0.187 4.75 0.050 1.27 0.012 0.30 100' -503
SH421-1/4 1/4" 0.250 6.35 0.063 1.60 0.012 0.30 100' -504
SH421-5/16 5/16" 0.312 7.92 0.079 2.00 0.012 0.30 100' -505
SH421-3/8 3/8" 0.375 9.53 0.096 2.44 0.012 0.30 100' -506
SH421-1/2 1/2" 0.500 12.7 0.144 3.66 0.015 0.39 100' -508
SH421-5/8 5/8" 0.625 15.88 0.178 4.52 0.015 0.39 100' -510
SH421-3/4 3/4" 0.750 19.05 0.225 5.72 0.015 0.39 100' -512
SH421-7/8 7/8" 0.872 22.23 0.244 6.20 0.015 0.39 100' -513
SH421-1" 1" 1.000 25.40 0.278 7.06 0.015 0.39 100' -514
SH421-1 1/4" 1 1/4" 1.250 31.75 0.347 8.81 0.015 0.39 100' -515

*When full recovery is allowed.

Standard Package:
100' in 2-4 ft lengths. Tubing may be ordered cut to length.
Standard Color:
Natural (clear).
Properties
Operating Temperature:
-75°C TO +260°C/-85°F to +500°F
Shrinking Temperature Nom:
327°C/621°F
Shrink Ratio:
4:1
Longitudinal Change, Max.:
+20%

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