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3M™ Very Low Outgassing High Shear Polyester Tape 8439

  • Product code: 8439
  • Manufacturer: 3M
  • Package size:
  • Shelf Life: 18 months

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3M™ Very Low Outgassing High Shear Polyester Tape 8439 is silver colored polyester film tape for the demanding requirements of hard disk drive and related electronics manufacturing. The metalized polyester backing offers low static and diffusivity and is complimented with a very low outgassing acrylic adhesive. This product offers a high level of permanence, yet is cleanly removable from most substrates even after extended heat treatments.

FEATURES

  • 1 mil metalized polyester backing
  • High purity acrylic adhesive

APPLICATIONS

  • Perimeter sealing of hard disk drive clamshells.
  • Temporary porthole sealing of hard disk drive clamshells.
  • Process aid.
  • General purpose sealing.
  • Other applications which require a low outgassing polyester film tape.
Property Values Unit
Tensile Strength 29 lb./in.
Elongation @ Break 120 %
Yield Point 10 %
16 lb./in.
Caliper Backing 1.0  mil
Caliper Adhesive 1.0  mil
Caliper Total 2.0  mil
Static < 100  volts
Shelf Life 18 months

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