Acetal Hollow Rods | McMaster-Carr

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	Material Material

Acetal Plastic

Delrin® Acetal Plastic

	Comparable To Comparable To

	System of Measurement System of Measurement

Inch

	OD OD

	ID ID

	Wall Thickness Wall Thickness

	Shape Shape

	Round Tube

	Color Color

	White
	Black
	Brown

	Flexibility Flexibility

	Semi-Rigid

	Length Length

	Performance Properties Performance Properties

Electrical Insulator

Food Contact

High Strength

Low Thermal Expansion

	Hardness Rating Hardness Rating

Hard

	Tolerance Rating Tolerance Rating

Oversized

Tight

	Friction Rating Friction Rating

Very Slippery

Slippery

	For Use With For Use With

Methyl Ethyl Ketone (MEK)

Mineral Oil

Vegetable Oil

Water

	Specifications Met Specifications Met

	Environment Environment

Food and Beverage

	Maximum Temperature Maximum Temperature

Less than 250° F

	Hardness Hardness

Rockwell M50-M90

Rockwell R115-R118

Rockwell R120-R122

	Clarity Clarity

Opaque

	Dielectric Strength Dielectric Strength

420-500 V/mil

450 V/mil

450-500 V/mil

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

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About Plastic

Color: White or Black
Temperature Range:
6" Lengths: 0° to 180° F
All other sizes: -20° to 180° F
Tensile Strength: 7,690 psi (Good)
Impact Strength: 1-1.5 ft.-lbs./in. (Poor)
Hardness: Rockwell R120-R122 (Hard)
For Use Outdoors: No
Specifications Met: See table

Easy to machine to close tolerances, these dimensionally stable tubes resist expanding when exposed to heat and moisture. They have a naturally slippery surface along with excellent wear resistance. Use them to make precision gears, bushings, and bearings. Delrin® acetal resin, also known as acetal homopolymer, is stronger and stiffer than acetal copolymer.

Tight-tolerance tubes that are 6” long are also known as bushing stock. You can slide them over rods to increase the OD, or into shafts to decrease the ID. Their precise sizing also allows ascending sizes to fit inside of each other to increase the wall thickness.

Tubes with an oversized OD also have an undersized ID for finishing to the sizes listed.

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

Tight-Tolerance Tubes

						White
OD	OD Tolerance	ID	ID Tolerance	Specifications Met	Lengths, ft.		Per Ft.
1/32" Wall Thick. (-0.01" to 0.01")
1/8"	-0.010" to 0.010"	1/16"	-0.010" to 0.010"	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	3, 5	00000000	00000
3/16"	-0.010" to 0.010"	1/8"	-0.010" to 0.010"	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	3, 5	00000000	0000
1/16" Wall Thick. (-0.01" to 0.01")
1/4"	-0.010" to 0.010"	1/8"	-0.010" to 0.010"	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	3, 5	00000000	0000
3/8"	-0.010" to 0.010"	1/4"	-0.010" to 0.010"	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	3, 5	00000000	0000
1/2"	-0.010" to 0.010"	3/8"	-0.010" to 0.010"	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	3, 5	00000000	0000
5/8"	-0.010" to 0.010"	1/2"	-0.010" to 0.010"	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	1, 3, 5	00000000	0000
3/4"	-0.010" to 0.010"	5/8"	-0.010" to 0.010"	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	1, 3, 5	00000000	0000
7/8"	-0.010" to 0.010"	3/4"	-0.010" to 0.010"	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	1, 3, 5	00000000	0000
1/8" Wall Thick. (-0.01" to 0.01")
5/8"	-0.010" to 0.010"	3/8"	-0.010" to 0.010"	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	1, 3, 5	00000000	0000
3/4"	-0.010" to 0.010"	1/2"	-0.010" to 0.010"	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	1, 3, 5	00000000	0000
7/8"	-0.010" to 0.010"	5/8"	-0.010" to 0.010"	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	1, 3, 5	00000000	0000
1"	-0.010" to 0.010"	3/4"	-0.010" to 0.010"	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	1, 3, 5	00000000	0000

						White
OD	OD Tolerance	ID	ID Tolerance	Specifications Met	Lg.		Each
1/8" Wall Thick. (-0.005" to 0.005")
1/2"	-0.005" to 0.005"	1/4"	-0.005" to 0.005"	ASTM D4181, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	6"	0000000	000000
3/4"	-0.005" to 0.005"	1/2"	-0.005" to 0.005"	ASTM D4181, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	6"	0000000	00000
1"	-0.005" to 0.005"	3/4"	-0.005" to 0.005"	ASTM D4181, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	6"	0000000	00000
1 1/4"	-0.005" to 0.005"	1"	-0.005" to 0.005"	ASTM D4181, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	6"	0000000	00000
1 1/2"	-0.005" to 0.005"	1 1/4"	-0.005" to 0.005"	ASTM D4181, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	6"	0000000	000000
1 3/4"	-0.005" to 0.005"	1 1/2"	-0.005" to 0.005"	ASTM D4181, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	6"	0000000	000000
2"	-0.005" to 0.005"	1 3/4"	-0.005" to 0.005"	ASTM D4181, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	6"	0000000	000000
2 1/4"	-0.005" to 0.005"	2"	-0.005" to 0.005"	ASTM D4181, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	6"	0000000	000000
2 1/2"	-0.005" to 0.005"	2 1/4"	-0.005" to 0.005"	ASTM D4181, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	6"	0000000	000000

Oversized Tubes

				White		Black
OD	ID	Lengths, ft.	Specifications Met		Per Ft.		Per Ft.
1/16" Wall Thick.
1/4"	1/8"	3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	00000	00000000	00000
5/8"	1/2"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	0000	00000000	0000
1/8" Wall Thick.
1/2"	1/4"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	0000	00000000	0000
3/4"	1/2"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	0000	00000000	0000
7/8"	5/8"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	0000	00000000	0000
1 1/4"	1"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	0000	00000000	0000
1 1/2"	1 1/4"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	00000	00000000	00000
1 3/4"	1 1/2"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	00000	00000000	00000
2"	1 3/4"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	00000	00000000	00000
2 1/4"	2"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	00000	00000000	00000
3/16" Wall Thick.
5/8"	1/4"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	0000	00000000	0000
1/4" Wall Thick.
3/4"	1/4"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	0000	00000000	0000
1"	1/2"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	0000	00000000	00000
1 1/4"	3/4"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	00000	00000000	00000
1 1/2"	1"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	00000	00000000	00000
1 3/4"	1 1/4"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	00000	00000000	00000
2"	1 1/2"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	00000	00000000	00000
2 1/2"	2"	1, 3, 5	ASTM D6778, FDA Compliant 21 CFR 177.2480, NSF/ANSI 51	00000000	00000	00000000	00000

Slippery Wear-Resistant Easy-to-Machine Delrin® Acetal AF Resin Tubes

Color: Brown
Temperature Range: -40° to 185° F
Tensile Strength: 7,690-8,100 psi (Good)
Impact Strength: 0.7-1 ft.-lbs./in. (Poor)
Hardness: Rockwell R115-R118 (Hard)
For Use Outdoors: No
Specifications Met: See table

PTFE is added to these Delrin® acetal resin tubes to make the surface even more slippery and wear resistant. They resist expanding when exposed to heat and moisture, so they can be machined to close tolerances. Fabricate them into pump components, gears, and bearings. The OD is oversized and the ID is undersized for finishing to the sizes listed. Delrin® acetal resin is also known as acetal homopolymer.

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

Oversized Tubes

1/16" Wall Thick.
OD	ID	Specifications Met	Lengths, ft.		Per Ft.
0.25"	1/8"	ASTM D6778, UL 94 HB	1, 2, 3, 4, 5	0000000	00000
0.625"	1/2"	ASTM D6778, UL 94 HB	1, 2, 3, 4, 5	0000000	00000
1/8" Wall Thick.
0.5"	1/4"	ASTM D6778, UL 94 HB	1, 2, 3, 4, 5	0000000	00000
0.75"	1/2"	ASTM D6778, UL 94 HB	1, 2, 3, 4, 5	0000000	00000
1.25"	1"	ASTM D6778, UL 94 HB	1, 2, 3, 4, 5	0000000	00000
3/16" Wall Thick.
0.625"	1/4"	ASTM D6778, UL 94 HB	1, 2, 3, 4, 5	0000000	00000
1/4" Wall Thick.
0.75"	1/4"	ASTM D6778, UL 94 HB	1, 2, 3, 4, 5	0000000	00000
1"	1/2"	ASTM D6778, UL 94 HB	1, 2, 3, 4, 5	0000000	00000
1.25"	3/4"	ASTM D6778, UL 94 HB	1, 2, 3, 4, 5	0000000	00000
1.5"	1"	ASTM D6778, UL 94 HB	1, 2, 3, 4, 5	0000000	00000
2"	1 1/2"	ASTM D6778, UL 94 HB	1, 2, 3, 4, 5	0000000	00000

Wear-Resistant Easy-to-Machine Acetal Tubes

Color: White
Temperature Range: -20° to 180° F
Tensile Strength: 6,400-9,500 psi (Good)
Impact Strength: 1-1.8 ft.-lbs./in. (Poor)
Hardness: Rockwell M50-M90 (Hard)
For Use Outdoors: No
Specifications Met: UL 94 HB, FDA Compliant 21 CFR 177.2470

These naturally slippery acetal copolymer tubes offer similar wear resistance to Delrin® acetal but at an economical price. Use them to make gears, bearings, and bushings. The OD is oversized and the ID is undersized for finishing to the sizes listed.

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

Oversized Tubes

1/16" Wall Thick.
OD	ID	Lengths, ft.		Each
1/4"	1/8"	5	0000000	00000
				Per Ft.
5/8"	1/2"	1, 2, 3, 4, 5	0000000	0000
1/8" Wall Thick.
1/2"	1/4"	1, 2, 3, 4, 5	0000000	0000
5/8"	3/8"	1, 2, 3, 4, 5	0000000	0000
3/4"	1/2"	1, 2, 3, 4, 5	0000000	0000
1 1/4"	1"	1, 2, 3, 4, 5	0000000	00000
3/16" Wall Thick.
5/8"	1/4"	1, 2, 3, 4, 5	0000000	0000
1/4" Wall Thick.
3/4"	1/4"	1, 2, 3, 4, 5	0000000	0000
1"	1/2"	1, 2, 3, 4, 5	0000000	00000
1 1/4"	3/4"	1, 2, 3, 4, 5	0000000	00000
1 1/2"	1"	1, 2, 3, 4, 5	0000000	00000
2"	1 1/2"	1, 2, 3, 4, 5	0000000	00000

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About Plastic

Wear-Resistant Easy-to-Machine Delrin® Acetal Resin Tubes

Slippery Wear-Resistant Easy-to-Machine Delrin® Acetal AF Resin Tubes

Wear-Resistant Easy-to-Machine Acetal Tubes