Electrical-Grade Fiberglass (GPO3) Square Stock

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Material Grade

Garolite LE

GPO3 Fiberglass

System of Measurement

Thickness

Width

Length

Shape

Color

Performance

Highly Electrically Insulating

Highly Machinable

Ultra Impact Resistant

Material

Flexibility

Maximum Temperature

Backing Type

Texture

Hardness Rating

Reinforcement Material

Resin Material

Clarity

Hardness

Dielectric Strength

200 V/mil to 600 V/mil

RoHS

For Use Outdoors

REACH

Compliant

Tensile Strength

9,040 psi

9,300 psi

10,000 psi to 15,000 psi

Flexural Strength

23,200 psi to 31,000 psi

Not Rated

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

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124 Products

About Composites

Compare our offering of composites to find the right material for you.

Arc-Resistant GPO3 Fiberglass Sheets and Strips

Often used for electrical applications in humid environments, these GPO3 fiberglass sheets and strips are arc and track resistant. They offer better electrical insulation properties than FRP fiberglass. Made of fiberglass-reinforced polyester, they're also called polyester-grade industrial laminate.

Sheets

	Thk.	Thk. Tolerance	Flatness Tolerance	Color	Max. Temp., ° F	Tensile Strength, psi	Impact Strength, ft·lbf/in	Hardness	For Use Outdoors	Flammability Rating		Each
12" Wide × 12" Long



		1/32"	-0.008" to 0.008"	0.600"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	—	0000000	00000


		1/16"	-0.008" to 0.008"	0.300"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	0000
		3/32"	-0.009" to 0.009"	0.300"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		1/8"	-0.01" to 0.01"	0.120"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		3/16"	-0.013" to 0.013"	0.120"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		1/4"	-0.015" to 0.015"	0.120"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		3/8"	-0.02" to 0.02"	0.060"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		1/2"	-0.024" to 0.024"	0.060"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		3/4"	-0.029" to 0.029"	0.060"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
		1"	-0.033" to 0.033"	0.03"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


		12" Wide × 24" Long



				1/32"	-0.008" to 0.008"	1.200"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	—	0000000	00000


				1/16"	-0.008" to 0.008"	0.600"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				3/32"	-0.009" to 0.009"	0.600"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				1/8"	-0.01" to 0.01"	0.240"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				3/16"	-0.013" to 0.013"	0.240"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				1/4"	-0.015" to 0.015"	0.240"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				3/8"	-0.02" to 0.02"	0.120"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				1/2"	-0.024" to 0.024"	0.120"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
				3/4"	-0.029" to 0.029"	0.120"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
				1"	-0.033" to 0.033"	0.060"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000


				24" Wide × 24" Long



						1/32"	-0.008" to 0.008"	1.200"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	—	0000000	00000


						1/16"	-0.008" to 0.008"	0.600"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
						3/32"	-0.009" to 0.009"	0.600"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
						1/8"	-0.01" to 0.01"	0.240"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
						3/16"	-0.013" to 0.013"	0.240"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
						1/4"	-0.015" to 0.015"	0.240"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
						3/8"	-0.02" to 0.02"	0.120"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
						1/2"	-0.024" to 0.024"	0.120"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
						3/4"	-0.029" to 0.029"	0.120"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
						1"	-0.033" to 0.033"	0.060"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000


						24" Wide × 36" Long



								1/32"	-0.008" to 0.008"	1.800"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	—	0000000	00000


								1/16"	-0.008" to 0.008"	0.900"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
								3/32"	-0.009" to 0.009"	0.900"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
								1/8"	-0.01" to 0.01"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
								3/16"	-0.013" to 0.013"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
1/4"								-0.015" to 0.015"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
3/8"	-0.02" to 0.02"							0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
1/2"	-0.024" to 0.024"							0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
3/4"	-0.029" to 0.029"							0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
1"	-0.033" to 0.033"							0.090"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000


36" Wide × 72" Long



								1/32"	-0.008" to 0.008"	3.600"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	—	0000000	000000


								1/16"	-0.008" to 0.008"	1.800"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
								3/32"	-0.009" to 0.009"	1.800"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
								1/8"	-0.01" to 0.01"	0.720"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
								3/16"	-0.013" to 0.013"	0.720"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
								1/4"	-0.015" to 0.015"	0.720"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
		3/8"						-0.02" to 0.02"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
		1/2"	-0.024" to 0.024"					0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
		3/4"	-0.029" to 0.029"					0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
		1"	-0.033" to 0.033"					0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000


		48" Wide × 96" Long



								1/16"	-0.008" to 0.008"	2.400"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000


								3/32"	-0.009" to 0.009"	2.400"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
								1/8"	-0.01" to 0.01"	0.960"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
								3/16"	-0.013" to 0.013"	0.960"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
								1/4"	-0.015" to 0.015"	0.960"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
								3/8"	-0.02" to 0.02"	0.480"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
								1/2"	-0.024" to 0.024"	0.480"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	000000
				3/4"				-0.029" to 0.029"	0.480"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	00000000
				1"	-0.033" to 0.033"			0.240"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	00000000	00000000

Strips

	Thk. Tolerance	Flatness Tolerance	Color	Max. Temp., ° F	Tensile Strength, psi	Impact Strength, ft·lbf/in	Hardness	For Use Outdoors	Flammability Rating		Each
3" Wide × 36" Long



	1/8"	-0.01" to 0.01"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000


	1/4"	-0.015" to 0.015"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
	3/8"	-0.02" to 0.02"	0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
	1/2"	-0.024" to 0.024"	0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
	1"	-0.033" to 0.033"	0.090"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


	3" Wide × 72" Long



			1/8"	-0.01" to 0.01"	0.720"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


			1/4"	-0.015" to 0.015"	0.720"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
			3/8"	-0.02" to 0.02"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
			1/2"	-0.024" to 0.024"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
			1"	-0.033" to 0.033"	0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


			6" Wide × 36" Long



					1/8"	-0.01" to 0.01"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


					1/4"	-0.015" to 0.015"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
					3/8"	-0.02" to 0.02"	0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
					1/2"	-0.024" to 0.024"	0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
					1"	-0.033" to 0.033"	0.090"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


					6" Wide × 72" Long



							1/8"	-0.01" to 0.01"	0.720"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


							1/4"	-0.015" to 0.015"	0.720"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
							3/8"	-0.02" to 0.02"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
							1/2"	-0.024" to 0.024"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
							1"	-0.033" to 0.033"	0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000


							12" Wide × 36" Long



									1/8"	-0.01" to 0.01"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


									1/4"	-0.015" to 0.015"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
									3/8"	-0.02" to 0.02"	0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
									1/2"	-0.024" to 0.024"	0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
									1"	-0.033" to 0.033"	0.090"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000


12" Wide × 72" Long



									1/8"	-0.01" to 0.01"	0.720"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000


									1/4"	-0.015" to 0.015"	0.720"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	00000
									3/8"	-0.02" to 0.02"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
									1/2"	-0.024" to 0.024"	0.360"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000
									1"	-0.033" to 0.033"	0.180"	Red	265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	UL 94 V-0	0000000	000000

Arc-Resistant GPO3 Fiberglass Square Tubes

Route and insulate wire using these square fiberglass tubes, which fit better along edges and around corners than round tubes. Use them for electrical applications in humid locations. They’re arc and track resistant, and better electrical insulators than FRP fiberglass. Made of fiberglass-reinforced polyester, they’re also known as polyester-grade industrial laminate.

	Outside				Inside									5 ft. Long
	Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.	Straightness Tolerance	Color	Temp. Range, ° F	Tensile Strength, psi	Impact Strength, ft·lbf/in	Hardness	For Use Outdoors		Each
UL 94 V-0







				1/8" Thick Wall (-0.02" to 0.02")

				1 1/2"	-0.062" to 0.062"	1 1/2"	-0.062" to 0.062"	1 1/4"	1 1/4"	0.050"/1 ft.	Red	-50 to 265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	00000000	000000




						1/4" Thick Wall (-0.02" to 0.02")

						2"	-0.062" to 0.062"	2"	-0.062" to 0.062"	1 1/2"	1 1/2"	0.050"/1 ft.	Red	-50 to 265	10,000 to 15,000	8.2 to 12	Barcol 50 (Hard)	No	00000000	000000

Easy-to-Machine Garolite LE Sheets and Strips

Using nothing more than standard high-speed steel tooling, these Garolite LE sheets and strips can be machined into intricate parts. Garolite LE is made of a phenolic resin with a fine-weave linen fabric reinforcement. It is sometimes referred to as industrial laminate, phenolic, and Bakelite.

Sheet

	Temp.								6" × 6"		12" × 12"		24" × 24"
	Min.	Max., ° F	Tensile Strength, psi	Impact Strength, ft·lbf/in	Hardness	For Use Outdoors	Mil. Spec.	Flammability Rating		Each		Each		Each
1/32" Thick (-0.005" to 0.005")







				Brown

				Not Rated	235	Not Rated	Not Rated	Rockwell M100 (Extra Hard)	No	MIL-I-24768/15	—	———	0	00000000	00000	00000000	000000


				1/16" Thick (-0.006" to 0.006")







								Brown

								Not Rated	235	9,040	1.07	Rockwell M100 (Extra Hard)	No	MIL-I-24768/15	UL 94 HB	———	0	00000000	00000	00000000	00000


								1/8" Thick (-0.008" to 0.008")







												Brown

												Not Rated	235	9,300	1.11	Rockwell M100 (Extra Hard)	No	MIL-I-24768/15	UL 94 HB	0000000	00000	00000000	00000	00000000	00000


												3/16" Thick (-0.01" to 0.01")







																Brown

																Not Rated	235	9,300	1.11	Rockwell M100 (Extra Hard)	No	MIL-I-24768/15	UL 94 HB	0000000	00000	00000000	00000	00000000	000000


																1/4" Thick (-0.012" to 0.024")







																				Brown

																				Not Rated	235	9,300	1.11	Rockwell M100 (Extra Hard)	No	MIL-I-24768/15	UL 94 HB	0000000	00000	00000000	00000	00000000	000000


5/16" Thick (-0.015" to 0.029")







																				Brown

																				Not Rated	235	9,300	1.11	Rockwell M100 (Extra Hard)	No	MIL-I-24768/15	UL 94 HB	0000000	00000	00000000	00000	00000000	000000


																				3/8" Thick (-0.017" to 0.034")







																				Brown

																				Not Rated	235	9,300	1.11	Rockwell M100 (Extra Hard)	No	MIL-I-24768/15	UL 94 HB	0000000	00000	00000000	00000	00000000	000000


																				1/2" Thick (-0.021" to 0.042")







																				Brown

																				Not Rated	235	Not Rated	0.99	Rockwell M100 (Extra Hard)	No	MIL-I-24768/15	UL 94 HB	0000000	00000	00000000	00000	00000000	000000


																				3/4" Thick (-0.027" to 0.054")







																				Brown

																				Not Rated	235	Not Rated	0.99	Rockwell M100 (Extra Hard)	No	MIL-I-24768/15	UL 94 HB	0000000	00000	00000000	000000	00000000	000000


																1" Thick (-0.033" to 0.065")







																				Brown

																				Not Rated	235	Not Rated	0.99	Rockwell M100 (Extra Hard)	No	MIL-I-24768/15	UL 94 HB	0000000	00000	00000000	000000	00000000	000000


1 1/4" Thick (0" to 0.073")







																				Brown

																				Not Rated	235	Not Rated	0.99	Rockwell M100 (Extra Hard)	No	MIL-I-24768/15	UL 94 HB	0000000	00000	00000000	000000	———	0


																				1 1/2" Thick (0" to 0.081")







																				Brown

																				Not Rated	235	Not Rated	0.99	Rockwell M100 (Extra Hard)	No	MIL-I-24768/15	UL 94 HB	0000000	00000	00000000	000000	00000000	000000