McMaster-Carr

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	Outside Width Outside Width

1/2"

3/4"

	Outside Height Outside Height

	Material Material

Plastic

Fiberglass

Carbon Fiber

	Wall Thickness Wall Thickness

	Color Color

	Clear		Gray
	Green		Black

	Performance Properties Performance Properties

Low Thermal Expansion

	Clarity Clarity

Clear

Opaque

	Length Length

	For Use With For Use With

	Inside Width Inside Width

	For Use Outdoors For Use Outdoors

Yes

	Impact Strength Impact Strength

	Impact Strength Rating Impact Strength Rating

Excellent

Poor

Not Rated

	Inside Height Inside Height

	Texture Texture


Smooth	Coarse

	Tensile Strength Rating Tensile Strength Rating

Excellent

Good

	Electrical Insulation Rating Electrical Insulation Rating

	Flexibility Flexibility

	Semi-Rigid
	Rigid

	Water Absorption Rating Water Absorption Rating

Good

Poor

Not Rated

	Tolerance Rating Tolerance Rating

Standard

Oversized

	Friction Rating Friction Rating

Slippery

Not Rated

	Flexural Modulus Flexural Modulus

320,000-350,000 psi

420,000-450,000 psi

430,000-490,000 psi

	Dielectric Strength Dielectric Strength

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41 Products

About Composites

About Plastic

Color: Clear
Temperature Range: -40° to 200° F
Tensile Strength: 8,900-9,500 psi (Good)
Impact Strength: 12-18 ft.-lbs./in. (Excellent)
Hardness: Rockwell R118 (Hard)
For Use Outdoors: No
Specifications Met: Made of FDA Listed Material, UL 94HB

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.

Rectangular Tubes

Outside
Ht.	Ht. Tolerance	Wd.	Wd. Tolerance	Lg., ft.		Per Ft.
1/16" Wall Thick. (-0.008" to 0.008")
1/2"	-0.010" to 0.010"	1/2"	-0.010" to 0.010"	6	0000000	00000
3/4"	-0.020" to 0.020"	3/4"	-0.020" to 0.020"	6	0000000	0000
0.08" Wall Thick. (-0.008" to 0.008")
1"	-0.020" to 0.020"	1"	-0.020" to 0.020"	1, 2, 3, 4, 5, 6	0000000	0000
2"	-0.030" to 0.030"	2"	-0.030" to 0.030"	1, 2, 3, 4, 5, 6	0000000	00000

Clear Scratch- and UV-Resistant Acrylic Tubes

Color: Clear
Temperature Range: -40° to 180° F
Tensile Strength; 9,195-11,030 (Good)
Impact Strength: 0.040 ft.-lbs./in.
Hardness: Rockwell M89-M96 (Hard)
For Use Outdoors: Yes
Specifications Met: UL 94HB

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.

For technical drawings and 3-D models, click on a part number.

Rectangular Tubes

Outside
Ht.	Ht. Tolerance	Wd.	Wd. Tolerance	Lg., ft.		Each
1/16" Wall Thick.
1/2"	-0.010" to 0.010"	1/2"	-0.010" to 0.010"	6	0000000	00000
3/4"	-0.010" to 0.010"	3/4"	-0.010" to 0.010"	6	0000000	0000
1"	-0.015" to 0.015"	1"	-0.015" to 0.015"	6	0000000	0000
1/8" Wall Thick.
1 1/4"	-0.015" to 0.015"	1 1/4"	-0.015" to 0.015"	6	0000000	00000
2"	-0.015" to 0.015"	2"	-0.015" to 0.015"	6	0000000	00000

Chemical-Resistant PVC 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. These tubes are oversized on the outside and undersized on the inside to allow for finishing to the sizes listed.

Rectangular Tubes

Color: Gray
Temperature Range: 5° to 140° F
Tensile Strength: 7,000-7,800 psi (Good)
Impact Strength: 0.7-3 ft.-lbs./in. (Poor)
Hardness: Rockwell R110-R120 (Hard)
For Use Outdoors: No
Specifications Met: UL 94V0

Outside				Inside		5 ft. Lg.
Ht.	Ht. Tolerance	Wd.	Wd. Tolerance	Ht.	Wd.		Each
0.06" Wall Thick. (0" to 0.006")
3/4"	-0.020" to 0.020"	3/4"	-0.020" to 0.020"	0.63"	0.63"	00000000	000000
0.078" Wall Thick. (0" to 0.008")
1"	-0.020" to 0.020"	1"	-0.020" to 0.020"	0.844"	0.844"	00000000	00000
1 3/8"	-0.020" to 0.020"	1 3/8"	-0.020" to 0.020"	1.219"	1.219"	00000000	00000
2"	-0.039" to 0.039"	2"	-0.039" to 0.039"	1.844"	1.844"	00000000	00000
3"	-0.039" to 0.039"	3"	-0.039" to 0.039"	2.844"	2.844"	00000000	00000
0.118" Wall Thick. (0" to 0.012")
7/8"	-0.020" to 0.020"	7/8"	-0.020" to 0.020"	0.639"	0.639"	00000000	00000

Structural FRP Fiberglass Square Tubes

Color: Green
Max. Temperature: 140° F
Tensile Strength: 7,000-40,000 psi (Good)
Impact Strength: 4-30 ft.-lbs./in. (Excellent)
Hardness: Barcol 45 (Hard)
For Use Outdoors: Yes

Use these FRP fiberglass square tubes as an alternative to wood in structural applications. Made of fiberglass-reinforced polyester, they are strong and lightweight.

Outside				Inside
Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.	Straightness Tolerance		Each
5 ft. Lg.
1/8" Wall Thick. (-0.019" to 0.019")
1"	-0.094" to 0.094"	1"	-0.094" to 0.094"	3/4"	3/4"	0.03” per ft.	0000000	000000
1 1/4"	-0.094" to 0.094"	1 1/4"	-0.094" to 0.094"	1"	1"	0.03” per ft.	0000000	00000
1 1/2"	-0.094" to 0.094"	1 1/2"	-0.094" to 0.094"	1 1/4"	1 1/4"	0.03” per ft.	0000000	00000
1 3/4"	-0.094" to 0.094"	1 3/4"	-0.094" to 0.094"	1 1/2"	1 1/2"	0.03” per ft.	0000000	00000
2"	-0.094" to 0.094"	2"	-0.094" to 0.094"	1 3/4"	1 3/4"	0.03” per ft.	0000000	00000
1/4" Wall Thick. (-0.038" to 0.038")
2"	-0.094" to 0.094"	2"	-0.094" to 0.094"	1 1/2"	1 1/2"	0.03” per ft.	0000000	00000
2 1/2"	-0.094" to 0.094"	2 1/2"	-0.094" to 0.094"	2"	2"	0.03” per ft.	0000000	00000
3"	-0.094" to 0.094"	3"	-0.094" to 0.094"	2 1/2"	2 1/2"	0.03” per ft.	0000000	00000
4"	-0.094" to 0.094"	4"	-0.094" to 0.094"	3 1/2"	3 1/2"	0.03” per ft.	0000000	000000
3/8" Wall Thick. (-0.056" to 0.056")
6"	-0.094" to 0.094"	6"	-0.094" to 0.094"	5 1/4"	5 1/4"	0.03” per ft.	0000000	000000
10 ft. Lg.
1/8" Wall Thick. (-0.019" to 0.019")
1"	-0.094" to 0.094"	1"	-0.094" to 0.094"	3/4"	3/4"	0.03” per ft.	0000000	00000
1 1/4"	-0.094" to 0.094"	1 1/4"	-0.094" to 0.094"	1"	1"	0.03” per ft.	0000000	00000
1 1/2"	-0.094" to 0.094"	1 1/2"	-0.094" to 0.094"	1 1/4"	1 1/4"	0.03” per ft.	0000000	00000
1 3/4"	-0.094" to 0.094"	1 3/4"	-0.094" to 0.094"	1 1/2"	1 1/2"	0.03” per ft.	0000000	00000
2"	-0.094" to 0.094"	2"	-0.094" to 0.094"	1 3/4"	1 3/4"	0.03” per ft.	0000000	00000
1/4" Wall Thick. (-0.038" to 0.038")
2"	-0.094" to 0.094"	2"	-0.094" to 0.094"	1 1/2"	1 1/2"	0.03” per ft.	0000000	000000
2 1/2"	-0.094" to 0.094"	2 1/2"	-0.094" to 0.094"	2"	2"	0.03” per ft.	0000000	000000
3"	-0.094" to 0.094"	3"	-0.094" to 0.094"	2 1/2"	2 1/2"	0.03” per ft.	0000000	000000
4"	-0.094" to 0.094"	4"	-0.094" to 0.094"	3 1/2"	3 1/2"	0.03” per ft.	0000000	000000
3/8" Wall Thick. (-0.056" to 0.056")
6"	-0.094" to 0.094"	6"	-0.094" to 0.094"	5 1/4"	5 1/4"	0.03” per ft.	0000000	000000

Ultra-Strength Lightweight Carbon Fiber Square Tubes

Color: Black
Temperature Range: 0° F to 250° F
Tensile Strength: 120,000-175,000 psi (Excellent)
Impact Strength: Not Rated
Hardness: Not Rated
For Use Outdoors: No

Often used to build frames and structures, these square tubes are made of carbon fiber, the strongest composite we offer. Carbon fiber is comparable in strength to 6061 aluminum yet lighter in weight.

Outside				Inside
Wd.	Wd. Tolerance	Ht.	Ht. Tolerance	Wd.	Ht.		Each
12" Lg.
0.04" Wall Thick. (-0.02" to 0.02")
0.83"	-0.02" to 0.02"	0.83"	-0.02" to 0.02"	3/4"	3/4"	0000000	000000
1.08"	-0.02" to 0.02"	1.08"	-0.02" to 0.02"	1"	1"	0000000	00000
0.06" Wall Thick. (-0.02" to 0.02")
1.37"	-0.02" to 0.02"	1.37"	-0.02" to 0.02"	1 1/4"	1 1/4"	0000000	00000
32" Lg.
0.04" Wall Thick. (-0.02" to 0.02")
0.83"	-0.02" to 0.02"	0.83"	-0.02" to 0.02"	3/4"	3/4"	0000000	000000
1.08"	-0.02" to 0.02"	1.08"	-0.02" to 0.02"	1"	1"	0000000	000000
0.06" Wall Thick. (-0.02" to 0.02")
1.37"	-0.02" to 0.02"	1.37"	-0.02" to 0.02"	1 1/4"	1 1/4"	0000000	000000

Terms and Conditions and Privacy Policy

About Composites

About Plastic

Clear Impact-Resistant Polycarbonate Tubes

Clear Scratch- and UV-Resistant Acrylic Tubes

Chemical-Resistant PVC Tubes

Structural FRP Fiberglass Square Tubes

Ultra-Strength Lightweight Carbon Fiber Square Tubes