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SMW 2.5:1 DUAL WALL - WALL MELTS - M23053/4 Class 1

POLYOLEFIN TUBING 
2.5:1 SHRINK RATIO
110°C Operating Temperature 
DESCRIPTION:

WEICO's SMW series is a semi-rigid, 110°C heat-shrinkable tubing that
is co-extruded and selectively cross-linked to provide an integral, meltable
inner wall. On the application of heat in excess of 135°C, SMW tubing
automatically shrinks and closely conforms to the contours of the underlying
substrate. 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 SMW tubing represents a tough
protective and insulating barrier highly resistant to penetration by moisture and
the attack of chemicals and solvents.

CHARACTERISTICS:

SMW Polyolefin tubing has a 2.5:1 minimum shrink ratio. SMW tubing meets
MIL-I-23053/4, class 1 and is rated for continuous operation from -55°C to +110°C.
It will withstand elevated temperatures for short periods.
 

SPECIFICATIONS:

 

PACKAGING:

  • 4 foot lengths
  • Cut to customer specifications

COLOR:

  • Black
*See Table For Actual Recovered Dimensions


*Click on a part number below for pricing and ordering online

TYPICAL PROPERTIES
SMW Series
 
PHYSICAL
Tensile Strength: 2200 PSI
Ultimate Elongation: 400%
Longitudinal Change: +1%, -10%
Secant Modulus (2%): 27,000 PSI
Specific Gravity: 1.00
*Heat Aging: (168 hrs. @ 175°C) - Elongation 175%
*Heat Shock: (4 hrs. @ 225°C) - No dripping, flowing, cracking
*Low Temp. Flexibility: (4 hrs. @ -55°C) - No cracking
*Flammability: Non-Flame Retardent
Abrasion Resistance: Good

ELECTRICAL
Dielectric Strength: 900 V/mil
Volume Resistivity: 10 ohm-cm

CHEMICAL
Corrosion Resistance: Non-Corrosive
Fluid Resistance:
Fuels and Oils - Good
Solvents - Good
Acids & Alkalies - Excellent
Water Absorbtion: 0.1%
Fungus Resistance: Non-nutrient
Item Name MILITARY NO. M23053/4 EXPANDED ID. MIN (INCHES) RECOVERED ID. MAX (INCHES) MELTABLE NOM. RECOVERED WALL THICK. (INCHES) TOTAL NOM. RECOVERED WALL THICK. (INCHES) Compare
SMW-1/8 -101-0 .125 .023 .020 .038
SMW-3/16 -102-0 .187 .060 .025 .043
SMW-1/4 -103-0 .250 .080 .027 .047
SMW-3/8 -104-0 .375 .135 .030 .050
SMW-1/2 -105-0 .500 .195 .035 .055
SMW-3/4 -106-0 .750 .313 .040 .065
SMW-1 -107-0 1.00 .400 .040 .075