Component - Plastics		E121855
Guide Information
FORMEX, DIV OF ILLINOIS TOOL WORKS INC
2325 Kenyon Road, Bartlett IL 60103
FORMEX GS-(a)(b)(f2)
Polypropylene (PP), furnished as sheets

Color	Min. Thk (mm)	Flame Class	HWI	HAI	RTI Elec (°C)	RTI Imp (°C)	RTI Str (°C)
ALL	0.05	VTM-0	0	0	115	-	115
	0.10	VTM-0	0	0	115	-	115
	0.20	VTM-0	0	0	115	-	115
	0.37	V-0	0	0	115	-	115
	0.71	V-0	0	0	115	-	115
	3.0	V-0	0	0	115	-	115

Comparative Tracking Index (CTI):	0	Inclined Plane Tracking (IPT) kV:	-
Dielectric Strength (kV/mm):	1.5	Volume Resistivity (10x ohm-cm):	0
High-Voltage Arc Tracking Rate (HVTR):	42	Surface Resistivity (10x ohms/square):	-
Dimensional Change (%):	-	High Volt, Low Current Arc Resis (D495):	15

(a) -	One to three digit suffix indicating nominal thickness in mils.
(b) -	May have additional suffix letter(s) indicating color.
(f2) -	Subjected to one or more of the following tests: Ultraviolet Light, Water Exposure or Immersion in accordance with UL 746C, where the acceptability for outdoor use is to be determined by UL.
NOTE -	HVTR, CTI and D495 are not dependent on thickness
ANSI/UL 94 small-scale test data does not pertain to building materials, furnishings and related contents. ANSI/UL 94 small-scale test data is intended solely for determining the flammability of plastic materials used in the components and parts of end-product devices and appliances, where the acceptability of the combination is determined by UL.

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Last Revised:	2026-08-18