Rectangular Tube Insulation

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Export Control Classification Number (ECCN)

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48 Products

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	4062N117	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	4062N118	000000

Chemical-Resistant PVC Rectangular Tubes

When working near chemicals such as acids and alkalies, these tubes offer 360° protection to wires, cords, and anything that can slide through them. They’re made of PVC Type 1, a material that’s easy to thermoform, plus it is an excellent insulator.

	Outside		Inside
	Ht.	Wd.	Ht.	Wd.	Lg., ft.	Fabrication	Temp., ° F	Color	Flammability Rating		Each
0.060" Thick Wall (-0.006" to 0.006" Tolerance)



		3/4"	3/4"	0.63"	0.63"	5	Extruded	5 to 140	Gray	UL 94 V-0	85095K67	000000


		0.078" Thick Wall (-0.008" to 0.008" Tolerance)



				1"	1"	0.844"	0.844"	5	Extruded	5 to 140	Gray	UL 94 V-0	85095K74	00000


				1"	2"	0.922"	1.922"	5	Extruded	5 to 140	Gray	UL 94 V-0	85095K91	00000
				1 3/8"	1 3/8"	1.219"	1.219"	5	Extruded	5 to 140	Gray	UL 94 V-0	85095K76	00000
				2"	2"	1.844"	1.844"	5	Extruded	5 to 140	Gray	UL 94 V-0	85095K82	00000
				3 1/8"	3 1/8"	2.994"	2.994"	5	Extruded	5 to 140	Gray	UL 94 V-0	85095K84	00000


				0.098" Thick Wall (-0.01" to 0.01" Tolerance)



						1 3/8"	2 3/4"	1.277"	2.652"	5	Extruded	5 to 140	Gray	UL 94 V-0	85095K92	00000


						1 3/8"	3 3/8"	1.277"	3.248"	5	Extruded	5 to 140	Gray	UL 94 V-0	85095K93	00000
						2 1/8"	4 1/4"	1.902"	3.902"	5	Extruded	5 to 140	Gray	UL 94 V-0	85095K95	00000
						2 1/4"	3 3/8"	2.188"	3.277"	5	Extruded	5 to 140	Gray	UL 94 V-0	85095K94	00000


						0.118" Thick Wall (-0.012" to 0.012" Tolerance)



								7/8"	7/8"	0.639"	0.639"	5	Extruded	5 to 140	Gray	UL 94 V-0	85095K71	00000

Multipurpose Flame-Retardant Garolite G-10/FR4 Rectangular Tubes

These rectangular tubes are flame retardant, machinable, and electrically insulating. They’re made of epoxy resin, making them good for use with printed circuit boards, insulating washers, and transformer components. With low moisture absorption, these tubes are often used as thermal insulators. Made with fiberglass fabric reinforcement, they’re strong and easier to machine than other glass cloth phenolics. Garolite G-10/FR4 is also called epoxy-grade industrial laminate and phenolic.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Outside				Inside		Temp.							36"
	Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.	Min.	Max., ° F	Tensile Strength, psi	Impact Strength, ft·lbf/in	Hardness	For Use Outdoors	Mil. Spec.		Each
0.063" Thick Wall







				Green

				2.156"	-0.015" to 0.015"	1.156"	-0.015" to 0.015"	2.03"	1.03"	Not Rated	265	32,000 to 40,000	5.5 to 12	Rockwell M100 (Extra Hard)	Yes	MIL-I-24768/27	4501N14	0000000


				1/8" Thick Wall







								Green

								3/4"	-0.015" to 0.015"	3/4"	-0.015" to 0.015"	1/2"	1/2"	Not Rated	265	32,000 to 40,000	5.5 to 12	Rockwell M100 (Extra Hard)	Yes	MIL-I-24768/27	4501N17	000000


								1"	-0.015" to 0.015"	7/8"	-0.015" to 0.015"	3/4"	5/8"	Not Rated	265	32,000 to 40,000	5.5 to 12	Rockwell M100 (Extra Hard)	Yes	MIL-I-24768/27	4501N11	000000


								1/4" Thick Wall







												Green

												1 5/8"	-0.015" to 0.015"	1 1/4"	-0.015" to 0.015"	1 1/8"	3/4"	Not Rated	265	32,000 to 40,000	5.5 to 12	Rockwell M100 (Extra Hard)	Yes	MIL-I-24768/27	4501N12	000000

Clear Scratch- and UV-Resistant Acrylic Rectangular Tubes

When compared to cast acrylic tubes, these extruded acrylic tubes offer nearly the same performance at a fraction of the cost. Use them for sight gauges and protective covers. This scratch- and UV-resistant material stands up to outdoor use better than polycarbonate and maintains clarity over time.

	Outside
	Ht.	Wd.	Lg., ft.	Fabrication	Temp., ° F	Color	Flammability Rating		Each
1/16" Thick Wall



		1/2"	1/2"	6	Extruded	-40 to 180	Clear	UL 94 HB	8516K33	00000


		3/4"	3/4"	6	Extruded	-40 to 180	Clear	UL 94 HB	8516K35	0000
		1"	1"	6	Extruded	-40 to 180	Clear	UL 94 HB	8516K37	00000


		1/8" Thick Wall



				1 1/4"	1 1/4"	6	Extruded	-40 to 180	Clear	UL 94 HB	8516K11	00000


				2"	2"	6	Extruded	-40 to 180	Clear	UL 94 HB	8516K39	00000
				2 1/4"	2 1/4"	6	Extruded	-40 to 180	Clear	UL 94 HB	8516K41	00000

High-Strength Buna-N Rectangular Tubes

Applications for these tubes include jackets, seals, and insulation. Buna-N is also known as nitrile, NBR, and acrylonitrile butadiene. It resists fuel oil, hydraulic oil, ethylene glycol, and grease.

								6" Long		12" Long		36" Long
Wd.	Ht.	ID	Hardness	Temp., ° F	For Use Outdoors	Color	Specs. Met		Each		Each		Each



	3/4"	3/4"	1/4"	Durometer 75A (Hard)	-20 to 225	No	Black	ASTM D2000 Type B Class G	———	0	———	0	1427T113	000000


	1"	1"	3/8"	Durometer 75A (Hard)	-20 to 225	No	Black	ASTM D2000 Type B Class G	———	0	———	0	1427T123	00000
	1 1/4"	1 1/4"	5/8"	Durometer 75A (Hard)	-20 to 225	No	Black	ASTM D2000 Type B Class G	———	0	1427T132	000000	1427T133	00000
	1 1/2"	1 1/2"	7/8"	Durometer 75A (Hard)	-20 to 225	No	Black	ASTM D2000 Type B Class G	———	0	1427T152	00000	1427T153	000000
	2"	2"	3/8"	Durometer 75A (Hard)	-20 to 225	No	Black	ASTM D2000 Type B Class G	1427T161	000000	1427T162	00000	1427T163	000000

Clear Ultra-Impact-Resistant Polycarbonate Rectangular Tubes

Comparable to Lexan, Hyzod, Tuffak, and Makrolon, these polycarbonate tubes are half the weight of glass and maintain excellent impact resistance across a wide temperature range. Use them to make instrument gauge covers and display racks.

	Outside
	Ht.	Wd.	Fabrication	Temp., ° F	Color	Flammability Rating	Choose a Length, ft.		Per Ft.
1/16" Thick Wall (-0.008" to 0.008" Tolerance)



		1/2"	1/2"	Extruded	-40 to 200	Clear	UL 94 HB	6	3161T11	00000


		3/4"	3/4"	Extruded	-40 to 200	Clear	UL 94 HB	6	3161T21	0000


		0.080" Thick Wall (-0.008" to 0.008" Tolerance)



				1"	1"	Extruded	-40 to 200	Clear	UL 94 HB	1, 2, 3, 4, 5, 6	3161T31	00000


				2"	2"	Extruded	-40 to 200	Clear	UL 94 HB	1, 2, 3, 4, 5, 6	3161T41	00000

Multipurpose Neoprene Rectangular Tubes

Use these tubes as jackets, seals, insulation, and more. Neoprene is a good general-purpose rubber that resists oil, water, and scrapes. It’s also called chloroprene.

									6" Long		12" Long		36" Long
	Wd.	Ht.	ID	Hardness	Temp., ° F	For Use Outdoors	Color	Specs. Met		Each		Each		Each
1/4" Thick Wall (-0.039" to 0.039" Tolerance)



		3/4"	3/4"	1/4"	Durometer 75A (Hard)	-20 to 200	No	Black	ASTM D2000 Type B Class C	1520T21	00000	1520T31	000000	1520T41	000000


		5/16" Thick Wall (-0.039" to 0.039" Tolerance)



				1"	1"	3/8"	Durometer 75A (Hard)	-20 to 200	No	Black	ASTM D2000 Type B Class C	1520T22	00000	1520T32	00000	1520T42	00000


				1 1/4"	1 1/4"	5/8"	Durometer 75A (Hard)	-20 to 200	No	Black	ASTM D2000 Type B Class C	1520T23	00000	1520T33	00000	1520T43	00000
				1 1/2"	1 1/2"	7/8"	Durometer 75A (Hard)	-20 to 200	No	Black	ASTM D2000 Type B Class C	1520T25	00000	1520T35	00000	1520T45	00000