Spiral Pipe | McMaster-Carr

	Duct Size Duct Size

	Shape Shape


Straight	Wye

	ID ID

	OD OD

	Material Material

Steel

Stainless Steel

Plastic

	Finish Finish

Galvanized

PVC Coated

	Component Component

Duct

Connector

Reducer

	Gauge Gauge

	Gender Gender

Female

Male

	End Construction End Construction

Plain

Crimped

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

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

RoHS Compliant

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

REACH Compliant

	Length Length

2 ft.

5 ft.

	Color Color

	Gray
	Clear

	For Use With For Use With

Fumes

Dust

	Maximum Vacuum Maximum Vacuum

	Bend Radius Bend Radius

	Compresses To Compresses To

50%

90%

Not Rated

	Compatible Clamps Compatible Clamps

Twin-Ring Hose Clamps

Worm-Drive Clamps

	Maximum Continuous Length Maximum Continuous Length

50ft.

100ft.

	Maximum Temperature Maximum Temperature

140° F

150° F

	Material Thickness Material Thickness

135 Products

About Duct Connections

About Duct Hose

A spiral seam makes this duct strong and rigid. Fittings have male ends with a slightly smaller diameter to press-fit into duct.

Galvanized steel has good corrosion resistance. PVC-coated steel combines the strength of steel with the corrosion resistance of plastic. 304 stainless steel is more corrosion resistant than steel.

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

Duct

			Galvanized Steel				PVC-Coated Steel			304 Stainless Steel
Duct Size	Female ID	End Construction	Gauge		2 ft.	5 ft.	Gauge		5 ft.	Gauge		2 ft.	5 ft.
3	3"	Plain	26	0000000	00	000000	__	000000	00	__	000000	00	00
4	4"	Plain	26	00000000	000000	00000	26	00000000	000000	24	00000000	000000	000000
5	5"	Plain	26	00000000	00000	00000	26	00000000	000000	__	000000	00	00
6	6"	Plain	26	00000000	00000	00000	26	00000000	000000	24	00000000	00000	000000
7	7"	Plain	__	000000	00	00	26	00000000	000000	__	000000	00	00
8	8"	Plain	26	00000000	00000	00000	26	00000000	000000	24	00000000	00000	000000
9	9"	Plain	__	000000	00	00	26	00000000	000000	__	000000	00	00
10	10"	Plain	26	00000000	00000	00000	26	00000000	000000	24	00000000	000000	000000
12	12"	Plain	26	00000000	00000	00000	26	00000000	000000	__	000000	00	00
14	14"	Plain	24	00000000	00000	000000	__	000000	00	__	000000	00	00
16	16"	Plain	24	00000000	00000	000000	__	000000	00	__	000000	00	00

45° Wye Connectors

Wye connectors join or split runs of duct.

				Galvanized Steel
Duct Size	Male OD	Gauge	End Construction		Each
3	2 7/8"	24	Plain	00000000	0000000
4	3 7/8"	24	Plain	00000000	000000
5	4 7/8"	24	Plain	00000000	000000
6	5 7/8"	24	Plain	00000000	00000
8	7 7/8"	24	Plain	00000000	00000
10	9 7/8"	24	Plain	00000000	000000
12	11 7/8"	24	Plain	00000000	000000
14	13 7/8"	24	Plain	00000000	000000
16	15 7/8"	24	Plain	00000000	000000

Straight Connectors

Male

Female

Male straight connectors are required to connect two pieces of duct.

Female straight connectors join two fittings.

Galvanized Steel
Duct Size	Female ID	Male OD	End Construction	Gauge		Each
Male
3	__	2 7/8"	Plain	24	0000000	000000
4	__	3 7/8"	Plain	24	0000000	00000
5	__	4 7/8"	Plain	24	0000000	00000
6	__	5 7/8"	Plain	24	0000000	00000
8	__	7 7/8"	Plain	24	0000000	00000
10	__	9 7/8"	Plain	24	0000000	00000
12	__	11 7/8"	Plain	24	0000000	00000
14	__	13 7/8"	Plain	22	0000000	00000
16	__	15 7/8"	Plain	22	0000000	00000
Female
3	3"	__	Plain	24	00000000	0000
4	4"	__	Plain	24	00000000	0000
5	5"	__	Plain	24	00000000	0000
6	6"	__	Plain	24	00000000	0000
8	8"	__	Plain	24	00000000	0000
10	10"	__	Plain	24	00000000	00000
12	12"	__	Plain	24	00000000	00000
14	14"	__	Plain	22	00000000	00000
16	16"	__	Plain	22	00000000	00000
PVC-Coated Steel
Male
4	__	3 7/8"	Plain	26	00000000	00000
5	__	4 7/8"	Plain	26	00000000	00000
6	__	5 7/8"	Plain	26	00000000	00000
7	__	6 7/8"	Plain	26	00000000	00000
8	__	7 7/8"	Plain	26	00000000	00000
9	__	8 7/8"	Plain	26	00000000	00000
10	__	9 7/8"	Plain	26	00000000	00000
12	__	11 7/8"	Plain	26	00000000	00000
304 Stainless Steel
Male
4	__	3 7/8"	Plain	24	0000000	00000
6	__	5 7/8"	Plain	24	0000000	00000
8	__	7 7/8"	Plain	24	0000000	00000
10	__	9 7/8"	Plain	24	0000000	00000

Straight Reducers

Reducers connect duct with different diameters.

Duct Size		Male OD
(A)	(B)	(A)	(B)	End Construction	Gauge		Each
Galvanized Steel
4	3	3 7/8"	2 7/8"	Plain	24	0000000	000000
5	4	4 7/8"	3 7/8"	Plain	24	0000000	00000
6	4	5 7/8"	3 7/8"	Plain	24	0000000	00000
6	5	5 7/8"	4 7/8"	Plain	24	0000000	00000
8	6	7 7/8"	5 7/8"	Plain	24	0000000	00000
10	6	9 7/8"	5 7/8"	Plain	24	0000000	00000
10	8	9 7/8"	7 7/8"	Plain	24	0000000	00000
12	10	11 7/8"	9 7/8"	Plain	24	0000000	00000
12	6	11 7/8"	5 7/8"	Plain	24	0000000	00000
12	8	11 7/8"	7 7/8"	Plain	24	0000000	00000
14	12	13 7/8"	11 7/8"	Plain	24	0000000	00000
16	14	15 7/8"	13 7/8"	Plain	24	0000000	00000
PVC-Coated Steel
5	4	4 7/8"	3 7/8"	Plain	20	00000000	00000
6	4	5 7/8"	3 7/8"	Plain	20	00000000	00000
6	5	5 7/8"	4 7/8"	Plain	20	00000000	00000
7	6	6 7/8"	5 7/8"	Plain	20	00000000	00000
8	6	7 7/8"	5 7/8"	Plain	20	00000000	00000
8	7	7 7/8"	6 7/8"	Plain	20	00000000	00000
9	8	8 7/8"	7 7/8"	Plain	20	00000000	00000
10	8	9 7/8"	7 7/8"	Plain	20	00000000	000000
10	9	9 7/8"	8 7/8"	Plain	20	00000000	000000
12	10	11 7/8"	9 7/8"	Plain	20	00000000	000000
304 Stainless Steel
6	4	5 7/8"	3 7/8"	Plain	20	0000000	00000
8	6	7 7/8"	5 7/8"	Plain	20	0000000	000000
10	6	9 7/8"	5 7/8"	Plain	20	0000000	000000
10	8	9 7/8"	7 7/8"	Plain	20	0000000	000000

Sure-Seal Spiral Duct and Fittings

Fittings have gaskets which create a tight seal—you don't need to seal joints with coating or tape. Fittings have male ends with a slightly smaller diameter to press-fit into duct. These duct and fittings are compatible with Crush-Resistant Spiral Duct and Fittings.

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

Duct

				Galvanized Steel
Duct Size	Female ID	Lg., ft.	Gauge		Each
4	4"	5	26	0000000	000000
6	6"	5	26	0000000	00000
8	8"	5	26	0000000	00000
10	10"	5	26	0000000	00000
12	12"	5	26	0000000	00000

Straight Connectors

Straight connectors are required to connect two pieces of duct.

				Galvanized Steel
Duct Size	Male OD	Gauge	Gasket Material		Each
4	3 7/8"	24	EPDM Rubber	0000000	000000
6	5 7/8"	24	EPDM Rubber	0000000	00000
8	7 7/8"	24	EPDM Rubber	0000000	00000
10	9 7/8"	24	EPDM Rubber	0000000	00000
12	11 7/8"	24	EPDM Rubber	0000000	00000

Reducers

Reducers connect duct with different diameters.

Duct Size		Male OD				Galvanized Steel
(A)	(B)	(A)	(B)	Gauge	Gasket Material		Each
6	4	5 7/8"	3 7/8"	20	EPDM Rubber	0000000	000000
8	6	7 7/8"	5 7/8"	20	EPDM Rubber	0000000	00000
10	6	9 7/8"	5 7/8"	20	EPDM Rubber	0000000	00000
10	8	9 7/8"	7 7/8"	20	EPDM Rubber	0000000	00000
12	10	11 7/8"	9 7/8"	20	EPDM Rubber	0000000	00000
12	8	11 7/8"	7 7/8"	20	EPDM Rubber	0000000	00000

Standard Duct and Fittings

No need for clamps or connectors—duct and fittings press-fit together. Male ends are crimped or tapered, making them slightly smaller than a female end for simple assembly.

304 stainless steel is more corrosion resistant than steel and aluminum.

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

Duct

Closed Duct

Closed duct is stronger than open duct because it has a seam that is already locked in place.

					304 Stainless Steel
Duct Size	Female ID	Male OD	Gauge	End Construction		2 ft.	5 ft.
Closed Duct
4	4"	3 7/8"	24	Crimped	00000000	0000000	00
5	5"	4 7/8"	24	Crimped	0000000	000000	00
6	6"	5 7/8"	24	Crimped	0000000	00000	0000000
7	7"	6 7/8"	24	Crimped	0000000	000000	000000
8	8"	7 7/8"	24	Crimped	0000000	000000	000000
10	10"	9 7/8"	24	Crimped	0000000	000000	000000
12	12"	11 7/8"	24	Crimped	0000000	000000	000000

Smooth-Flow Flexible Duct Hose for Dust

Hose

Hose Cuff

Flexible
Compatible Clamps: Worm-Drive and Twin-Ring Clamps
Color: Gray
Temperature Range: -40° to 150° F

The smooth interior prevents dust from getting trapped and building up inside the hose. Hose is for use with lint, dust, and sawdust.

Warning: Hose should not be used for applications that generate a static charge.

Duct Hose														Hose Cuffs
								Spiral				Per Ft.			Each
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Max. Continuous Lg., ft.		1-49	50-Up		1-9	10-Up
Polyethylene
1/2"	3/4"	1 1/2"	90%	29 in. of Hg @ 72° F	15 psi @ 72° F	0.033"	Smooth	Left Hand	Plastic	50	0000000	00000	00000	000000	00	00
5/8"	7/8"	1 1/2"	90%	29 in. of Hg @ 72° F	15 psi @ 72° F	0.033"	Smooth	Left Hand	Plastic	50	0000000	0000	0000	000000	00	00
3/4"	1"	1 1/2"	90%	29 in. of Hg @ 72° F	15 psi @ 72° F	0.035"	Smooth	Left Hand	Plastic	50	0000000	0000	0000	000000	00	00
1"	1 5/16"	2 1/2"	90%	29 in. of Hg @ 72° F	15 psi @ 72° F	0.038"	Smooth	Left Hand	Plastic	50	0000000	0000	0000	000000	00	00
1 1/4"	1 11/16"	3"	90%	29 in. of Hg @ 72° F	13 psi @ 72° F	0.043"	Smooth	Left Hand	Plastic	50	0000000	0000	0000	000000	00	00
1 1/2"	1 15/16"	3"	90%	29 in. of Hg @ 72° F	9 psi @ 72° F	0.048"	Smooth	Left Hand	Plastic	50	0000000	0000	0000	0000000	00000	00000
2"	2 1/2"	5 1/2"	90%	20 in. of Hg @ 72° F	5 psi @ 72° F	0.053"	Smooth	Left Hand	Plastic	50	0000000	0000	0000	0000000	0000	0000
2 1/2"	3 1/8"	6"	90%	12 in. of Hg @ 72° F	4 psi @ 72° F	0.055"	Smooth	Left Hand	Plastic	50	0000000	0000	0000	000000	00	00
3"	3 1/2"	6 1/2"	90%	5 in. of Hg @ 72° F	3 psi @ 72° F	0.055"	Smooth	Left Hand	Plastic	50	0000000	0000	0000	000000	00	00
4"	4 1/2"	11"	90%	2 in. of Hg @ 72° F	1 psi @ 72° F	0.058"	Smooth	Left Hand	Plastic	50	0000000	0000	0000	000000	00	00

All-Plastic Flexible Duct Hose for Fumes

Flexible
Compatible Clamps: Worm-Drive and Twin-Ring Clamps
Color: Gray
Temperature Range: 0° to 150° F

Unlike other duct hose that has a metal spiral, this hose has a plastic spiral that will not rust. Hose is for use with smoke, water-based paint fumes, and welding fumes. It has a smooth interior for unrestricted flow.

							Spiral
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Material Thick.	Interior Surface Texture	Direction	Material	Lg., ft.		Per Ft.
PVC
1"	1 1/4"	2"	50%	5 in. of Hg @ 72° F	0.035"	Smooth	Right Hand	Plastic	5, 10, 20, 25, 50, 100	0000000	00000
1 1/2"	1 3/4"	2"	50%	5 in. of Hg @ 72° F	0.04"	Smooth	Right Hand	Plastic	5, 10, 20, 25, 50, 100	0000000	0000
2"	2 5/16"	3"	50%	5 in. of Hg @ 72° F	0.047"	Smooth	Right Hand	Plastic	5, 10, 20, 25, 50, 100	0000000	0000
2 1/2"	2 13/16"	4"	50%	5 in. of Hg @ 72° F	0.047"	Smooth	Right Hand	Plastic	5, 10, 20, 25, 50, 100	0000000	0000
3"	3 7/16"	7"	50%	5 in. of Hg @ 72° F	0.047"	Smooth	Right Hand	Plastic	5, 10, 25, 50, 100	0000000	00000
4"	4 7/16"	8"	50%	5 in. of Hg @ 72° F	0.047"	Smooth	Right Hand	Plastic	5, 10, 15, 20, 25, 30, 50, 100	0000000	00000
6"	6 1/2"	10"	50%	5 in. of Hg @ 72° F	0.047"	Smooth	Right Hand	Plastic	5, 10, 20, 30	0000000	00000

Clear Flexible Duct Hose with Wear Strip for Fumes

Flexible
Compatible Clamps: Twin-Ring Hose Clamps
Color: Clear; Wear Strip is Black
Temperature Range: -13° to 140° F

Vent smoke, water-based paint fumes, and welding fumes with this hose that gives you a clear view inside your line. It has a smooth interior for unrestricted flow and a wear strip to protect against damage caused by dragging. Hose should not be compressed.

						Spiral				Per Ft.
ID	OD	Bend Radius	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Max. Continuous Lg., ft.		1-99	100-Up
PVC
2 1/2"	2 13/16"	2 1/2"	6 psi @ 72° F	0.035"	Smooth	Right Hand	Plastic	100	0000000	00000	00000
3"	3 3/8"	3"	6 psi @ 72° F	0.039"	Smooth	Right Hand	Plastic	100	0000000	0000	0000
4"	4 7/16"	4"	5 psi @ 72° F	0.039"	Smooth	Right Hand	Plastic	100	0000000	0000	0000
5"	5 9/16"	5"	3 psi @ 72° F	0.047"	Smooth	Right Hand	Plastic	100	0000000	00000	0000
6"	6 9/16"	6"	3 psi @ 72° F	0.047"	Smooth	Right Hand	Plastic	100	0000000	00000	00000
7"	7 9/16"	7"	2 psi @ 72° F	0.047"	Smooth	Right Hand	Plastic	100	0000000	00000	00000
8"	8 9/16"	8"	2 psi @ 72° F	0.047"	Smooth	Right Hand	Plastic	50	0000000	00000	00000