MW-3/8-48-BLACK-BOX

3M™ Heat Shrink Tubing MW Adhesive-Lined, 2.5:1, Semi-Rigid, Polyolefin Data Sheet Description November 2018 3M™ Heat Shrink Tubing MW is a semi-rigid, 110ºC heat-shrinkable polyolefin tubing that is co-extruded and selectively cross-linked to provide an integral, meltable inner wall. When heated in excess of 135ºC (275ºF), the inner meltable wall of the tubing is simultaneously softened and forced by the shrink action into intimate contact with all underlying surfaces, interstices and small voids. Upon cooling, the 3M MW tubing provides a tough protective and insulating barrier, highly resistant to penetration by moisture and the introduction of chemicals and solvents. Adhesive reflow will occur at temperatures above 80ºC (176ºF). Agency Approvals & Self Certifications Meets requirements of: • AS23053/4, Class 1* • UL Recognized, File E-157227 • For RoHS and REACH information, please visit www.3M.com/regs *Formerly MIL-I-23053/4, MIL-DTL-23053/4 and SAE-AMS-DTL-23053/4 Applications Applications for 3M MW tubing include braided-shield pigtails, electrical wiring, mechanical assemblies, electronic components, electrical wire splices, breakouts, connections, solder joints, delicate wire terminations, end-sealing of electrical cables and rigid tubings. For installation that may require rework, retrofit or repair in the field, 3M MW tubing offers the extra advantage of easy removability. For circuit and component identification purposes, the tubings readily accept marking by means of print-wheel or hot-stamp techniques. Shrink Ratio 3M MW tubing has a 2.5:1 shrink ratio. When fully recovered, the tubing will shrink 40% of its original diameter. The recovered wall thickness of the tubing is proportional to the degree of recovery. The operating temperature range is from -55ºC (-67ºF) to 110ºC (230ºF), with a shrink temperature minimum of 135ºC (275ºF), and will withstand higher operating temperatures for brief periods. 1 of 3  3M™ Heat Shrink Tubing MW Standard Sizes and Dimensions Ordering Size (Nominal) 1/8 3/16 1/4 3/8 1/2 3/4 1 Typical Properties Expanded I.D. (Minimum) In. .125 .187 .250 .375 .500 .750 1.000 (mm) (3,18) (4,75) (6,35) (9,53) (12,70) (19,05) (25,40) Recovered I.D. (Maximum In. .023 .060 .080 .13 .195 .313 .400 (mm) (0,58) (1,52) (2,03) (3,43) (4,95) (7,95) (10,16) Total Recovered Wall Thickness (Nominal) In. .038 .043 .047 .050 .055 .065 .075 (mm) (0,97) (1,09) (1,19) (1,27) (1,40) (1,65) (1,91) Meltable Recovered Wall Thickness In. .020 .025 .027 .030 .035 .040 .040 (mm) (0,51) (0,64) (0,69) (0,76) (0,89) (1,02) (1,02) Not for specifications. Values are typical, not to be considered minimum or maximum. Properties measured at room temperature 73°F (23°C) unless otherwise stated. Physical Property Tensile Strength Ultimate Elongation Longitudinal Change Secant Modulus (2%) Heat Aging (outer wall only) 168 hrs @ 175ºC Heat shock (outer wall only) 4 hrs @ 250 ºC Low Temperature Flexibility (outer wall only) 4 hrs @ -55 ºC Electrical Property Dielectric Strength Volume Resistivity Chemical Property Corrosion Resistance Fungus Resistance Water Absorption Fluid Resistance JR4 Skydrol 600 Solution Gasoline Hydraulic Fluid 2 of 3 Typical Value US units (metric) 2200 PSI 400% +1, -10% 27,000 PSI Elongation 175% No dripping, flowing, cracking No cracking Typical Value US units (metric) 900 V/mil 1015 ohm/cm Typical Value US units (metric) Non-corrosive Non-nutrient 0.1% >1500 PSI @ V/mil @ 600 V/mil 3M™ Heat Shrink Tubing MW Standard Colors Black Also available in Blue, Clear, Red, White and Yellow. Price, MOQ and Lead Time will vary for these colors. Please contact Local Sales Representative or Customer Service Representative for more information. NOTE: The clear tubing is not flame retardant or UL listed. Shelf Life & Storage 3M™ Heat Shrink Tubing MW has a 10-year shelf life from date of manufacture when stored in a humidity controlled storage (10°C/50°F to 27°C/80°F and