PRODUCT SEARCH
Weico P/N:
Alpha / Belden :
Mil Spec:
UL Styles:
Design Parameters:
Chat software by BoldChat

SPO 2:1 SHRINK RATIO - M23053/5 Class 1,2 & 3

POLYOLEFIN TUBING
2:1 SHRINK RATIO
135°C Operating Temperature
DESCRIPTION:

WEICO's SPO series is a flexible cross-linked polyolefin heat shrinkable
tubing with a two to one shrink ratio.  When heated to 121°C or higher and
allowed to freely recover, the tubing will shrink to fifty percent of its supplied diameter.
SPO offers an outstanding balance or properties - electrical, physical, and chemical -
that make them the most popular choice for a wide variety of commercial and military
applications.  Rated for 135°C continuous operation and engineered for superior flame
resistant properties, these tubings are typically used as a shrink fit electrical insulation
over cable splices and terminations.  They are also excellent for light weight wire harness
coverings, wire marking and bundling, component packaging and fire-resistant coverings.
Polyolefin clear tubings provide excellent visibility for component packaging.  All polyolefin
tubings are split-resistant, mechanically tough, easily marked and they resist cold flow.

CHARACTERISTICS:

SPO polyolefin tubing has a 2:1 shrink ratio. When freely recovered, the tubing will shrink to
50% of its supplied diameter.  SPO tubing meets MIL-I-23053/5, class 1, 2, and 3. It is UL
Recognized and CSA certified to 600 volts @ 125°C. Class 3 material is also UL VW-1 and
CSA OFT. SPO tubing is rated for continuous operation from -55°C to +135°C and can withstand
elevated temperatures to 300°C.

SPECIFICATIONS:

  • UL recognized, CSA certified
  • MIL-I-23053/5 Class 1, 2, 3 (Class 3 must be specified at time of ordering)
  • AMS-3636B (Colors) Nonflammable
  • AMS-3637B (Clear) Non self-extinguishing
  • UL VW-1 and CSA OFT (Must be specified at time of ordering)
  • Typical Properties

PACKAGING:

  • 4 foot lengths
  • Spools
  • Cut to customer specifications

Click Here To Download The Spec Sheet

COLOR:

  • 0 black
  • 2 red
  • 4 yellow
  • 5 green
  • 6 blue
  • 9 white
  • C clear 

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

TYPICAL PROPERTIES
SPO Series
 
PHYSICAL
Tensile Strength: 2400 PSI
Ultimate Elongation: 400%
Longitudinal Change:
Classes 1, 2 - ±5%
Class 3 - +1%, -10%
Secant Modulus (2%): 13,000 PSI
Specific Gravity:
Class 1 - 1.3
Class 2 - 0.93
Class 3
- 1.5
Heat Aging: (336 hrs. @ 175°C) - Elongation 175%
Heat Shock: (4 hrs. @ 250°C) - No dripping, cracking, passes mandrel wrap test
Low Temp. Flexibility: (4 hrs. @ -55°C) - No cracking
Flammability:
Class 1 - Self-extinguishing, meets UL 224 All-Tubing Flame Test
Class 2 - Non Self-extinguishing
Class 3 - Self-extinguishing, meets UL 224 VW-1 Test
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 - Excellent
Acids & Alkalies - Excellent
Water Absorbtion: 0.2%
Fungus Resistance: Non-nutrient
Item Name MILITARY NO. M23053/5 (CLEAR) MILITARY NO. M23053/5 (COLORS) MILITARY NO. M23053/5 (CLASS) EXPANDED ID. MIN. RECOVERED ID. MAX. RECOVERED NOM. WALL THICK. (IN) Compare
SPO-3/64 -201-X -101-X -301-X .046 .023 .016
SPO-1/16 -202-X -102-X -302-X .063 .031 .017
SPO-3/32 -203-X -103-X -303-X .093 .046 .020
SPO-1/8 -204-X -104-X -304-X .125 .062 .020
SPO-3/16 -205-X -105-X -305-X .187 .093 .020
SPO-1/4 -206-X -106-X -306-X .250 .125 .025
SPO-3/8 -207-X -107-X -307-X .375 .187 .025
SPO-1/2 -208-X -108-X -308-X .500 .250 .025
SPO-3/4 -209-X -109-X -309-X .750 .375 .030
SPO-1 -210-X -110-X -310-X 1.00 .500 .035
SPO-1 1/2 -211-X -111-X -311-X 1.50 .750 .040
SPO-2 -212-X -112-X -312-X 2.00 1.000 .045
SPO-3 -213-X -113-X -313-X 3.00 1.500 .050
SPO-4 -214-X -114-X -314-X 4.00 2.000 .055

X-Denotes color coding