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Shurtape’s PC 857 delivers first class performance under the toughest conditions. Specifically formulated for Class I flex duct applications, UL 181B-FX Listed PC 857 gives you unbelievable performance in the installation of flex duct connections.

With its aggressive quick stick and adhesion to polyethylene and stainless steel, PC 857 meets or exceeds most UL and flex duct manufacturer requirements, plus city and state codes.

When you need first class performance on Class I flex duct, make PC 857 your first choice to meet UL 181B-FX requirements.

  • Superior shear adhesion holds a 100-gram load without slipping in a 24 hour evaluation after exposure to 150 ̊F for 60 days
  • No adverse effects after exposure for 60 days up to 212 ̊F
  • Highly resistant to mold growth and humidity
  • High shear resistance
  • UL 181B-FX Listed specification printed directly on the tape is easily identified by inspectors
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