Polyken 338 FSK Insulation Jacketing Tape [Overstock]

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Polyken 338 FSK Insulation Jacketing Tape is a Foil, Scrim, Kraft laminate tape coated with a synthetic rubber adhesive suitable for used to seal and patch FSK duct boards and blankets. Provides extra strength seal to maintain vapor barrier integrity. Used for sealing insulation and repairing in cooler / refrigeration applications. Polkyen 333 is high strength & tear resistant; UV , moisture and mold resistant; and provides for a super high tack, aggressive bond to surfaces. Diamond pattern matches most FSK boards and blankets.

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Technical Specifications

Polyken 338 FSK Insulation Jacketing Tape [Overstock] Specifications

  • Adhesive: synthetic rubber   How are adhesives different?
  • Carrier/Backing: foil/tri-directional fiberglass scrim/Kraft paper
  • Release Liner: unbleached natural Kraft paper
  • Thickness: 8 mils (carrier, adhesive)    What is a mil?
  • Adhesion: 70 ounces per inch (to stainless steel)
  • Tensile Strength: 30 pounds per inch (longitudinal)
  • Service/Operating Temperature: 40°F to 200°F
  • Smoke Developed Index: 15
  • Flame Spread Index: 15
  • VOC Content: < 1 g/L
  • Certifications: UL723; can contribute toward satisfying EQ Credit 4.1 (Low Emitting Materials) under LEED
  • Core: 3" diameter
* specifications are those given by manufacturers and are not tested for accuracy
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Ordering Options
Quantity:    Rolls or Cases? View Complete Pricing on all Available Sizes
Color: Silver
Roll Size: ** 2 in. x 50 yds.
$ Price per item will display once
the above selections are made.
** Adhesive tape products are NOT guaranteed to be splice-free. Sizes shipped will typically be the tape industry standard metric-cut sizes, i.e. 24mm for each 1 inch of nominal tape width ordered (rolls are approximately 5% narrower than the nominal size). Please contact us to inquire about pricing for full-cut widths; e.g. a 6 inch roll cut to 152mm instead of 144mm.
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Pricing Table
2 in. x 50 yds.
Actual Size: 48mm x 46m
338/25024SINGLE ROLL

(1 to 23 rolls)


(24 to 119 rolls)


(120 to 239 rolls)


(>= 240 rolls)

$5.99 $12.87


$4.98 $11.87


$4.92 $11.80


$4.86 $11.73


* see individual roll price to left

$119.52 $284.88


$118.08 $283.20


$116.64 $281.52


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