Perma-Mark Home Page, www.perma-mark.com Perma-Mark Industries
17 River Street
Beverly, MA
USA      01915
Phone: (978) 236-1050
Fax: (978) 236-1075

PM-DW-1

Specifications
Ratio UL Specs MIL Specs
Semi-rigid Dual Wall with Encapsulant 3 to 1 Ratio MIL-DTL-23053/4 Class 1
Cross Reference Chart
3M/ECC Alpha Raychem Sumitomo
MW FIT-300 SCL W5DL
General Information
Description Usages Operating Temp Shrink Temp Packaging
Semi-Rigid, dual wall polyolefin heat-shrinkable tubing. When heated the inner liner melts and flows too encapsulate (not adhesive lined) components or splices contained within. Recommended in applications for connections and wire harnesses where filling voids and intersectices is of importance. Provides good strain relief because it does not adhere to the substrate material. It can be removed for repair of components. -55 C to +110 C 130 C Bag
Physical Properties
Property (units) Test Method Requirements
Tensile Strength (psi) ASTM D638 1500 min
Elongation (%) ASTM D638 200 min
Cold Impact (-55 C) ASTM D746 No Cracking
Heat Shock (250 C, 4 Hrs.) MIL-DTL-23053 No Cracking
Secant Modulus (psi) ASTM D882 25000 max
Longitudinal Change MIL-DTL-23053 +1, -10
Electrical Properties
Property (units) Test Method Requirements
Dielectric strength (volts/mil) ASTM 2671 500 min
Volume resistivity (ohm-cm) ASTM D876 1.0 x 1015
Chemical Properties
Property (units) Test Method Requirements
Corrosion (121 C, 16 Hrs.) MIL-DTL-23053 No Corrosion
Water Absorption (%) ASTM D570 0.5 max
Fluid Resistance (23 C, 24 Hrs.) Te MIL-DTL-23053 1000 min
Measurement Chart Click here to view Measurement Information.