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Printashrink SPF (FLAT)

Printashrink SPF (FLAT) is a flattened 2:1 ratio, MIL-SPEC and UL approved heatshrink polyolefin with a working temperature of 135°C. It has excellent printability qualities and is ideal for identification in aerospace, military and defence applications. It is fire retardant and available in several colours and sizes up to 50.8mm ID and can be cut and printed as required.

This continuous 2:1 heatshrink polyolefin tube is supplied flat making it compatible with most printers. It is a UL/CSA approved sleeve which meets MIL-SPEC requirements. It has a 135°C working temperature and excellent electrical, chemical and physical properties. It is available on bulk and smaller reels to suit any print set up and is used in in aerospace, military and defence, as well as other professional applications. We offer our full range of printing and cutting services on this high quality sleeve making it perfect for identification, branding and marking requirements.

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 - 50.8
  • Packing: Reels, mini-reels, mini-packs, cut to length, kits, cut sleeves
  • Print: Yes, full range of text and logos
  • Approvals: SAE-AMS-DTL-23053/5 class 1&3, SAE AS81531:1531:1998 4.6.2, MIL-STD-202F 215J, UL224 125° 600V VW-1, CSA certified, RoHS compliant
  • Applications / Industries:
    • General
    • Commercial
    • Electrical
    • Electronics
    • Industrial
    • Mechanical
    • Automotive
    • Military-defence
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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