ASTM D6778 Acetal | McMaster-Carr

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ASTM

ASTM D6778

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Warning: Products have one, but not necessarily all, of the selected characteristics.

	Shape Shape


Sheet and Bar	Rod and Disc

Round Tube

	System of Measurement System of Measurement

Inch

	Length Length

	Diameter Diameter

	Thickness Thickness

	Color Color

	White
	Black
	Brown

	Performance Properties Performance Properties

High Strength

Multipurpose

Wear Resistant

Low Thermal Expansion

	OD OD

	ID ID

	Material Material

Plastic

	Flexibility Flexibility

	Semi-Rigid

	Comparable To Comparable To

Delrin® Acetal Resin

	Friction Rating Friction Rating

Very Slippery

	Width Width

12"

24"

	For Use With For Use With

Methyl Ethyl Ketone (MEK)

Mineral Oil

Vegetable Oil

Water

	Filler Material Filler Material

Plastic

	Tolerance Rating Tolerance Rating

Oversized

Standard

Tight

	Wall Thickness Wall Thickness

	Maximum Temperature Maximum Temperature

180° F

185° F

	Minimum Temperature Minimum Temperature

-40° F

-20° F

	Impact Strength Rating Impact Strength Rating

Poor

	Clarity Clarity

Opaque

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123 Products

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.

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

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 Rods and Discs

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: ASTM D6100, ASTM D6778, UL 94 HB

While just as dimensionally stable and machinable as standard Delrin® acetal resin rods and discs, these have a PTFE filler to make them more slippery and wear resistant. Fabricate them into pump components, gears, and bearings. Delrin® acetal resin is also known as acetal homopolymer.

Rods

Dia.	Dia. Tolerance	Lengths, ft.		Per Ft.
1/4"	0.000" to 0.002"	1, 2, 3, 4, 5	0000000	00000
3/8"	0.000" to 0.002"	1, 2, 3, 4, 5	0000000	0000
1/2"	0.000" to 0.002"	1, 2, 3, 4, 5	0000000	0000
5/8"	0.000" to 0.002"	1, 2, 3, 4, 5	0000000	0000
3/4"	0.000" to 0.002"	1, 2, 3, 4, 5	0000000	00000
1"	0.000" to 0.002"	1, 2, 3, 4, 5	0000000	00000
1 1/8"	0.000" to 0.005"	1, 2, 3, 4	0000000	00000
1 1/4"	0.000" to 0.005"	1, 2, 3, 4	0000000	00000
1 1/2"	0.000" to 0.005"	1, 2, 3, 4	0000000	00000
1 3/4"	0.000" to 0.008"	1, 2, 3, 4	0000000	00000
2"	0.000" to 0.008"	1, 2, 3, 4	0000000	00000
2 1/4"	0.000" to 0.250"	1, 2, 3, 4	0000000	00000
2 1/2"	0.000" to 0.250"	1, 2, 3, 4	0000000	00000
3"	0.000" to 0.250"	1, 2, 3, 4	0000000	000000
3 1/2"	0.000" to 0.250"	1, 2, 3, 4	0000000	000000
4"	0.000" to 0.250"	1, 2, 3, 4	0000000	000000
5"	0.000" to 0.250"	1, 2, 3, 4	0000000	000000

Discs

		1/2" Lg.		1" Lg.		3" Lg.		6" Lg.
Dia.	Dia. Tolerance		Each		Each		Each		Each
3"	0.000" to 0.250"	0000000	000000	0000000	000000	0000000	000000	0000000	000000
4"	0.000" to 0.250"	0000000	00000	0000000	00000	0000000	000000	0000000	000000
6"	0.000" to 0.250"	0000000	00000	0000000	00000	0000000	000000	0000000	000000

Slippery Wear-Resistant Easy-to-Machine Delrin® Acetal AF Resin Sheets and Strips

The addition of PTFE provides a more slippery, wear-resistant surface than standard Delrin® acetal resin. These sheets and strips resist expanding when exposed to heat and moisture, so they can be machined to close tolerances. Fabricate them into pump components, gears, and bearings. Delrin® acetal resin is also known as acetal homopolymer.

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

Sheets

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: ASTM D6778, UL 94 HB

6" × 6"
Thick.	Thick. Tolerance		Each
1/8"	-0.01" to 0.01"	00000000	000000
1/4"	0" to 0.025"	00000000	00000
3/8"	0" to 0.025"	00000000	00000
1/2"	0" to 0.025"	00000000	00000
5/8"	0" to 0.025"	00000000	00000
3/4"	0" to 0.025"	00000000	00000
1"	0" to 0.025"	00000000	000000
12" × 12"
1/8"	-0.01" to 0.01"	00000000	00000
1/4"	0" to 0.025"	00000000	000000
3/8"	0" to 0.025"	00000000	000000
1/2"	0" to 0.025"	00000000	000000
5/8"	0" to 0.025"	00000000	000000
3/4"	0" to 0.025"	00000000	000000
1"	0" to 0.025"	00000000	000000
12" × 24"
1/8"	-0.01" to 0.01"	00000000	000000
1/4"	0" to 0.025"	00000000	000000
3/8"	0" to 0.025"	00000000	000000
1/2"	0" to 0.025"	00000000	000000
5/8"	0" to 0.025"	00000000	000000
3/4"	0" to 0.025"	00000000	000000
1"	0" to 0.025"	00000000	000000
12" × 48"
1/8"	-0.01" to 0.01"	00000000	000000
1/4"	0" to 0.025"	00000000	000000
3/8"	0" to 0.025"	00000000	000000
1/2"	0" to 0.025"	00000000	000000
5/8"	0" to 0.025"	00000000	000000
3/4"	0" to 0.025"	00000000	00000000
1"	0" to 0.025"	00000000	00000000
24" × 24"
1/8"	-0.01" to 0.01"	00000000	000000
1/4"	0" to 0.025"	00000000	000000
3/8"	0" to 0.025"	00000000	000000
1/2"	0" to 0.025"	00000000	000000
5/8"	0" to 0.025"	00000000	000000
3/4"	0" to 0.025"	00000000	00000000
1"	0" to 0.025"	00000000	00000000

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

About Plastic

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

Slippery Wear-Resistant Easy-to-Machine Delrin® Acetal AF Resin Rods and Discs

Slippery Wear-Resistant Easy-to-Machine Delrin® Acetal AF Resin Sheets and Strips

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