1478 Glastic UTS (GPO-2) Sheet

Note: This is a variation of Glastic UTS (GPO-2) Sheet (320ºF Fiberglass Reinforced Polyester Laminate).

  • NEMA GPO-2
  • High Strength
  • Flame-Resistant Meets UL94 VO
  • Cost-Effective
  • Outstanding Punchability
  • Asbestos-Free

Glastic® Grade UTS 141 & 1478 are NEMA GPO-2 fiberglass-reinforced laminates. Both Electrical Insulation Laminates are UL94 V0, and are ideal for applications requiring flame and heat resistance, as well as applications requiring higher retention of properties after heat aging.
Grade UTS 141 is a UL Recognized material with a temperature index of 130ºC Electrical and 130ºC Mechanical.
Grade UTS 1478 is a UL Recognized material with a temperature index of 130ºC Electrical and 160ºC Mechanical.
They are both available in a standard red color. Both grades arcell nameasily fabricated, offering an exceptional capability for punching in their thinner thicknesses. Glastic Grade 141 is available from 1/32 through 1/16 inch. Grade 1478 is available in thicknesses from 3/32 through 1/2 inch thick.
Glastic Grade Laminates 141 & 1478 are ideal for a wide variety of applications, including intricate punchings for switches, switch plates, controls, control panels, and terminal boards.


Specific Gravity1.8
Coefficient of Thermal Expansion ( in/in/ºC )2 x 10-5
Arc Resistance ( sec )130
Standard ColorRed
UL Temperature Index for Electrical ( ºC )130
UL Subject 94VO
Flexural Strength ( psi )24600
Water Absorption0.6 % by Wt.
Tensile Strength ( psi )8900
Compressive Strength ( psi )39000
Shear Strength ( psi )13400
Thermal Conductivity ( BTU-in/hr-ft²-ºF )1.8
Tensile Modulus ( psi )1.9 x 106
Flexural Strength at 130ºC ( psi )14900
Oxygen Index36.0 % Oxygen
IZOD Impact Strength (Notched) ( ft lb/in )10.7
IEC Track Resistance (CTI) ( V )500+
UL High Voltage Track Rate ( in/min )0
Permittivity, 60 Hz4.1
Dissipation Factor, 60 Hz0.011
Insulation Resistance ( ohm )270 x 1012
UL Temperature Index for Mechanical ( ºC )160
UL Recognition File NumberE81928
Military SpecificationL-P 509/GPO-2
Electrical Strength - Perpendicular S/T in Air ( vpm )433
Strength - Perpendicular S/T in Oil ( vpm )567
Electrical Strength - Parallel S/S in Oil ( kV )51
Permittivity, MHz3.9
Dissipation Factor, MHz0.010
UL Hot Wire Ignition ( sec )300+
UL High Amp Ignition200+ #Exposure
Ignition Time ( min )81
Burn Time ( min )48
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