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Printashrink SPF-L

Printashrink SPF-L is a flattened 135°C, UL approved, 2:1 shrink ratio heatshrink polyolefin. It is in the form of printable labels organised on ladder-style carriers which meet MIL-SPEC requirements. They are fire retardant and available in a range of colours and sizes up to 50.8mm ID and can be printed as required.

This flattened 2:1 heatshrink polyolefin tube can be supplied on a number of differently sized and structured ladder-style carriers making it compatible with most printers. It is a UL/CSA approved sleeve which meets MIL-SPEC requirements, has a 135°C working temperature and excellent electrical, chemical and physical properties. These attributes make it perfect for aerospace, military, defence, and many other professional applications. Its surface and profile are designed for thermal transfer printing and it is available in varying sleeve lengths to suit any print requirement and set up. We can supply unprinted or pre-printed as required.

Technical Data

  • Shrink Ratio: 2:1
  • Shrink Temperature: +85°C
  • Operating Temperature: -40°C - +135°C
  • Flame Retardant: Yes
  • Colours:
    • Yellow,
    • White,
    • Other colours available upon request
  • Sizes: 2.4 x 13, 19, 25, 38, 50 - 50.8 x 13, 19, 25, 38, 50
  • Packing: Rolls, mini-packs
  • Approvals: MIL-STD-202F method 215J, UL224 125C 600V VW-1, CSA 25C 600V VW-1, SAE-AMS-DTL-23053/5 class 1&3 (mark performance: SAE AS81531:1998 point 4.6.2) RoHS Compliant
Properties Typical Values Test Methods
Operating Temperature -40°C - + 135°C
Minimum shrink temperature 85°C
Shrink Ratio 2:1
Tensile Strength ≥14MPa ASTM D 638
Ultimate elongation ≥ 400% ASTM D 638
Specific gravity 1.34g/cm³ ASTM D 792
Longitudinal change 0% - -2% SAE-AMS-DTL-23053
Secant Modulus 65MPa ASTM D 882
Flammability VW-1 pass UL224
Heat shock (4hrs) No dripping, cracking or flowing SAE-AMS-DTL-23053
Low temperature flexibility (4hrs @ -55°C) No cracking SAE-AMS-DTL-23053
Heat ageing (168hrs) Elongation ≥ 400% SAE-AMS-DTL-23053
Dielectric strength ≥ 37 kV/mm UL 224
Volume resistivity 3.1 x 10¹⁴ Ω cm ASTM D 876
Voltage rating 600V UL 224
Dielectric Voltage withstands 2.5kV for 60s UL 224
Copper corrosion Pass SAE-AMS-DTL-23053
Copper stability Pass SAE-AMS-DTL-23053
Fluid resistance Gasoline, hydraulic fluid, lubricating oil, tensile 25-14MPa SAE-AMS-DTL-23053
Fungus resistance Pass, no growth ASTM G 21

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