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AP-280 Jars


Zip-Chem® AP 280 is a two-component kit that is comprised of uncatalyzed silicone resin with a select grade of aluminum powder that is packaged separately.

Once the silicon resin and aluminum powder are thoroughly mixed and applied to the substrate, AP 280 will thicken to a "putty-like" consistency. This putty-like consistency will exhibit a high degree of flexibility and adhesion while functioning as an excellent heat sink.

Application of Product

AP 280 is listed on the QPL for DPM 5979.

AP 280 was also formulated specifically for use when changing the static port heater element on DC-9 and MD-80 powerplants.

The non-curing and pressure sensitive putty/aluminum mix should be applied with a spatula at approximately 15 mils thick. Next, the mix should stand for 1 - 2 hours to gain "tack". Finally, the mix should be manipulated to lay the heater element into the putty compound.


AP 280 will maintain an excellent bond while exhibiting vibration resistance and flexibility over a very broad temperature range from -100°F to 550°F in continuous service.

AP 280 is pre-ratioed and both components should be mixed completely just prior to being applied to an area.

Physical Properties

  • Dielectric Constant ASTM D150: 2.95 @ 100 Hz, 2.90 @ 100,000 Hz
  • Dielectric Strength ASTM D 149: 900 v/mil
  • Dissipation Factor ASTM D150: 0.004@100 Hz, 0.003 @ 100,000 Hz
  • Flash Point: 27°F (80°F)
  • Service Temperature: -100°F to 550°F continuous
  • Shelf Life: The un-mixed kit has a 6 month shelf-life from the date of packaging
  • Solids: 52% prior to mixing
  • Storage Conditions: Store in a cool, dry, and well ventilated place at a temperature between 40°F and 100°F
  • Viscosity: 5500 cps prior to mixing
  • Volume Resistivity ASTM D257: 4 X 10-¹³ OHM-CM


1 Oz Kit of Silicone Resin and Aluminum Powder Packaged in Separate Containers (008671).

5 Oz Kit of Silicone Resin and Aluminum Powder Packaged in Separate Containers (002788).

Download technical data sheet of AP 280 by clicking on the TDS button below

Contact Zip-Chem® Products

Contact Zip-Chem® Products to request AP 280 packaging and the AP 280 SDS.

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