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9250; 9250C

FAR-Rated High Temperature-Resistant Light-Blocking Sheet

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Design Options

Full Range of Colors
Wide Range Available
500 lb

Boltaron® 9250 and 9250C are proprietary, thin gauge thermoplastic sheet products that combine maximum light-blocking characteristics with high temperature resistance for aircraft window shades.

9250 is a single color sheet, and 9250C features a double color construction. They offer durability and uniform thermoforming characteristics, and resist abrasion, stains and many chemicals.

Both also meet stringent FAR flammability criteria.


  • Maximum light-blocking in thin gauges
  • High temperature resistance
  • Meets FAR flame test criteria
  • Single and double color construction


  • Aircraft window shades

Performance Details

FAR Ratings

  • FAR 25.853(a)(i) (Flammability) (Vertical burn, 60 sec) Pass
  • FAR 25.853(a)(ii) (Flammability) (Vertical burn, 12 sec) Pass


  • Name Test Method Imperial Metric
  • Specific Gravity ASTM D792 1.47
  • Tensile Strength ASTM D638 7,400 psi 51 MPa
  • Flexural Strength ASTM D790 11,000 psi 75.9 MPa
  • Flexural Modulus ASTM D790 380,000 psi 2,620 MPa
  • Izod Impact Notched ASTM D256 73°F 2.0 ft-lb/in 106.8°C 265 J/m
  • Hardness Rockwell ASTM D785 119
  • Heat Deflection Annealed ASTM D648 200-205°F @ 264 PSI 93-96°C @1.8 MPa
  • Thermal Expansion ASTM D696 1.67 x 10-5/°F 3 x 10-5/°C
  • Forming Temperature 380 - 420°F 193 - 215°C

* Independent lab tests. All tests at 73 °F (23 °C) in dry conditions unless otherwise noted.

Sheet Sizes

  • Name Imperial Metric
  • Lengths 120 in 3,048 mm
  • Widths 48 in to 1,220 mm
  • Gauges from 0.047 to 0.060 in from 1.2 to 1.52 mm
  • Custom Sizes Blank sizes, gauges on request