3 5/16" Tubing | McMaster-Carr

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20 Products

About Hose

About Duct Hose

Rigid
Compatible Clamps: U-Bolt Clamps
Max. Temperature: Galvanized Steel: 750° F; Aluminum: 450° F; 304 Stainless Steel: 1500° F; 316 Stainless Steel: 1200° F

Metal interlocked strips create a rigid, durable hose that stays strong under high temperatures. Hose is for use with smoke, welding fumes, and oil fumes.

Galvanized steel offers fair corrosion resistance.

Galvanized Steel
ID	OD	Bend Radius	Interior Surface Texture	Other Lengths, ft.		5 ft.	6 ft.	7 ft.	8 ft.	9 ft.	10 ft.	15 ft.	20 ft.	25 ft.
0.026" Material Thick.
3"	3 5/16"	12"	Ribbed	1 to 50	0000000	000000	000000	000000	0000000	0000000	0000000	0000000	0000000	0000000

Flexible Duct Hose with Wear Strip for Corrosive Fumes

PFA Hose

Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Gray or Clear; Wear Strip is Silver
Temperature Range: -65° to 500° F

Not only does this hose stand up to corrosive fumes, it has a metal spiral on the outside that acts as a wear strip to protect against damage.

PFA plastic hose is clear so you can see inside your line. It meets UL 94 V-0 for flame retardance. Use with smoke, paint fumes, sodium hydroxide fumes, and sulfuric acid fumes.

								Spiral					Per Ft.
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Specifications Met	Max. Continuous Lg., ft.		1-24	25-Up
Clear PFA Plastic
3"	3 5/16"	4 1/2"	20%	3 in. of Hg @ 72° F	7 psi @ 72° F	0.005"	Ribbed	Left Hand	Metal	UL 94 V-0	25	00000000	000000	000000

Extreme-Temperature Flexible Duct Hose with Wear Strip for Fumes

Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Gray; Wear Strip is Silver
Temperature Range: -100° to 800° F

Glass fabric withstands extreme temperatures like stainless steel, but is much more flexible. Hose has a metal spiral that acts as a wear strip to protect against damage. Hose is for use with smoke and water-based paint fumes.

								Spiral				Per Ft.
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Max. Continuous Lg., ft.		1-24	25-Up
Alumina-Coated Glass Fabric
3"	3 5/16"	4 1/2"	25%	4 in. of Hg @ 72° F	6.8 psi @ 72° F	0.02"	Ribbed	Left Hand	Metal	25	00000000	000000	000000

Puncture- and Abrasion-Resistant Duct Hose for Metal Chips and Shavings

Clear Hose

Black Hose

Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Clear or Black
Temperature Range: -65° to 200° F

Blow jagged, abrasive materials through this hose without worrying about punctures or tears. It's made of extra-thick polyurethane.

Clear hose lets you monitor flow.

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

								Spiral				Per Ft.
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Max. Continuous Lg., ft.		1-24	25-Up
Clear Polyurethane
3"	3 5/16"	5"	75%	29 in. of Hg @ 72° F	30 psi @ 72° F	0.06"	Ribbed	Left Hand	Metal	25	0000000	000000	000000
Black Polyurethane
3"	3 5/16"	3"	30%	29 in. of Hg @ 72° F	29 psi @ 72° F	0.03"	Ribbed	Right Hand	Metal	25	00000000	00000	00000

Continuous-Flex Duct Hose for Wood Chips and Plastic Pellets

Flexible
Compatible Clamps: Worm-Drive and Quick-Release Clamps
Color: Black
Temperature Range: -40° to 250° F

The neoprene coating on this hose withstands continuous motion without weakening. Hose is also for use with cardboard fibers. It meets UL 94 V-0 for flame retardance.

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

								Spiral					Per Ft.
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Specifications Met	Max. Continuous Lg., ft.		1-24	25-Up
Neoprene-Coated Nylon
3"	3 5/16"	1"	25%	29 in. of Hg @ 72° F	30 psi @ 72° F	0.026"	Ribbed	Right Hand	Metal	UL 94 V-0	25	0000000	000000	000000

Flame-Resistant Duct Hose for Wood Chips and Plastic Pellets

Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Semi-Clear
Temperature Range: -65° to 225° F

Hose meets UL 94 V-2 for flame retardance. The walls are semi-clear so you get a glimpse of what’s running through your line. Hose is also for use with cardboard fibers.

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

								Spiral					Per Ft.
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Specifications Met	Max. Continuous Lg., ft.		1-24	25-Up
Polyurethane
3"	3 5/16"	3"	35%	29 in. of Hg @ 72° F	29 psi @ 72° F	0.03"	Ribbed	Right Hand	Metal	UL 94 V-2	50	000000	000000	000000

Antistatic Duct Hose for Dry Food

Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Clear
Temperature Range: -20° to 200° F

Blow grain, sugar, flour, and powders through this hose—it's made of FDA listed materials. Hose has a metal spiral that dissipates static when used in a grounded system. The walls are clear so you can monitor flow.

								Spiral						Per Ft.
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Specifications Met	Surface Resistivity, ohms	Max. Continuous Lg., ft.		1-49	50-Up
Polyurethane
3"	3 5/16"	3 1/2"	50%	29 in. of Hg @ 72° F	12 psi @ 72° F	0.035"	Ribbed	Right Hand	Metal	FDA Compliant 21 CFR 177.2600	10¹¹	50	000000	000000	000000

Blo-R-Vac Flexible Duct Hose for Dust

Black Hose

White Hose

Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Black, White, or Blue
Temperature Range: -40° to 250° F

A good general purpose hose for blowing and vacuum applications, this hose is for use with grinding dust, sawdust, and lint.

TPR rubber hose meets UL 94 HB for flame retardance.

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

								Spiral					Per Ft.
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Specifications Met	Max. Continuous Lg., ft.		1-24	25-Up
Inch
Black TPR Rubber
3"	3 5/16"	4 1/2"	50%	28 in. of Hg @ 72° F	10 psi @ 72° F	0.03"	Ribbed	Left Hand	Metal	UL 94 HB	25	00000000	00000	00000
White TPR Rubber
3"	3 5/16"	4 1/2"	50%	28 in. of Hg @ 72° F	10 psi @ 72° F	0.03"	Ribbed	Left Hand	Metal	UL 94 HB	25	000000000	0000	0000

Flexible Duct Hose for Clean Environments

Flexible
Compatible Clamps: Worm-Drive Clamps
Color: White
Temperature Range: -20° to 325° F

This white hose makes dirt and other contaminants easy to spot. Hose is for use with lint, dust, and sawdust and can also be used in food industry or pharmaceutical applications.

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

								Spiral				Per Ft.
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Max. Continuous Lg., ft.		1-24	25-Up
Acrylic-Coated Polyester
3"	3 5/16"	2 1/2"	25%	29 in. of Hg @ 72° F	29 psi @ 72° F	0.03"	Ribbed	Right Hand	Metal	25	0000000	000000	000000

Very Flexible Duct Hose for Dust

Black Hose

Very Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Clear or Black
Temperature Range: Clear: -20° to 180° F; Black: -40° to 250° F

The small bend radius makes this hose easy to wrap around corners and install in tight spaces. It is for use with lint, dust, and sawdust.

Black hose meets UL 94 V-0 for flame retardance.

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

								Spiral					Per Ft.
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Specifications Met	Max. Continuous Lg., ft.		1-24	25-Up
Black Neoprene-Coated Polyester
3"	3 5/16"	1 1/2"	25%	29 in. of Hg @ 72° F	30 psi @ 72° F	0.03"	Ribbed	Right Hand	Metal	UL 94 V-0	25	0000000	000000	00000

Static-Control Very Flexible Duct Hose for Dust

Very Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Black
Specifications Met: UL 94 V-0
Temperature Range: -40° to 250° F

The neoprene coating on this hose contains carbon to dissipate static when hose is installed in a grounded system. Hose is for use with lint, dust, and sawdust. It meets UL 94 V-0 for flame retardance.

								Spiral					Per Ft.
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Surface Resistivity, ohms	Max. Continuous Lg., ft.		1-24	25-Up
Neoprene-Coated Polyester
3"	3 5/16"	2 1/2"	35%	29 in. of Hg @ 72° F	29 psi @ 72° F	0.03"	Ribbed	Right Hand	Metal	10³	25	0000000	000000	000000

High-Pressure Wet-Food and Beverage Hose

Temperature Range: -40° to 240° F
Maximum Vacuum: 29" of Hg @ 72° F
Material: Chlorobutyl rubber with an EPDM rubber cover
Color: Gray
Compatible Hose Fittings: Cam-and-Groove

Strong yarn reinforces this hose to give it a higher pressure rating than other food and beverage hose. Also known as brewer’s and vintner’s hose, the hose material is FDA compliant. Hose is not for continuous steam service.

						Per Ft.
ID	OD	Bend Radius	Specifications Met	Max. Continuous Lg., ft.		1-99	100-Up
250 psi @ 72° F Max. Pressure
2 1/2"	3 5/16"	13"	3-A Certified 18-03, FDA Compliant 21 CFR 177.2600	100	000000000	000000	000000

High-Pressure Wet-Food and Beverage Hose with Sanitary Fittings

Temperature Range: -40° to 240° F
Maximum Vacuum: 29" of Hg @ 72° F
Maximum Pressure: 250 psi @ 72° F
Material: Chlorobutyl Rubber with EPDM Rubber Cover
Color: Gray
Specifications Met: 3-A Certified 18-03

Strong yarn reinforces this hose to give it a higher pressure rating than other food and beverage hose. Hose is not for continuous steam service. Fittings are also known as tri-clamp fittings. They attach to other quick-clamp fittings with a gasket and a clamp.

316 Stainless Steel Quick-Clamp Sanitary × 316 Stainless Steel Quick-Clamp Sanitary
Flange OD	ID	OD	Bend Radius	Other Lengths		5 ft.	10 ft.	15 ft.	20 ft.	25 ft.	30 ft.	50 ft.
3.047" × 3.047"	2 1/2"	3 5/16"	13"	1 to 100 ft.	000000000	000000000	000000000	000000000	000000000	000000000	000000000	000000000

High-Pressure Wet-Food and Beverage Hose with Cam-and-Groove Socket and Plug

Temperature Range: -40° to 240° F
Maximum Vacuum: 29" of Hg @ 72° F
Material: Chlorobutyl Rubber with EPDM Rubber Cover
Color: Gray
Specifications Met: 3-A Certified 18-03

Strong yarn reinforces this hose to give it a higher pressure rating than other food and beverage hose. Hose is not for continuous steam service. To connect fittings, insert the plug into the socket and push the levers down.

316 Stainless Steel Cam-and-Groove Female Socket × 316 Stainless Steel Cam-and-Groove Male Plug
Coupling Size	ID	OD	Bend Radius	Maximum Pressure	Other Lengths, ft.		5 ft.	10 ft.	15 ft.	20 ft.	25 ft.	30 ft.	50 ft.
2 1/2 × 2 1/2	2 1/2"	3 5/16"	13"	200 psi @ 72° F	2 to 100	000000000	000000000	000000000	000000000	000000000	000000000	000000000	000000000

High-Vacuum Hose with Claw-Clamp Fittings

Hose

Temperature Range: Not Rated
Material:
6" Lengths: 321 Stainless Steel
Other Lengths: 304 Stainless Steel
Fitting Material: 304 Stainless Steel

6" Lg.
For Tube OD	Flange OD	Trade Number	ID	OD	Wall Thickness	Bend Radius	High Vacuum Connection Type	Max. Vacuum		Each
2 1/2"	3.74"	63	2 1/2"	3 5/16"	0.008"	2 3/4"	ISO-K	1 × 10 ^-9 torr @ 72° F	0000000	0000000

Clamps

Double-Claw Clamp

Single-Claw Clamp

Double Claw
For Tube OD	For Flange OD	Trade Number	High Vacuum Connection Type	Material	Max. Vacuum		Each
2 1/2", 3", 4"	3.74", 4.33", 5.12"	63, 80, 100	ISO-K	Aluminum	1 × 10 ^-9 torr @ 72° F	0000000	00000
Single Claw
2 1/2", 3", 4"	3.74", 4.33", 5.12"	63, 80, 100	ISO-K	Aluminum	1 × 10 ^-9 torr @ 72° F	0000000	0000

Rings

Ring

				Material
For Tube OD	For Flange OD	Trade Number	High Vacuum Connection Type	O-Ring	Inner Ring	Max. Vacuum	Max. Temp., °F		Each
2 1/2"	3.74"	63	ISO-K	Viton® Fluoroelastomer Rubber	304 Stainless Steel	1 × 10 ^-9 torr @ 72° F	400°	0000000	000000

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About Hose

About Duct Hose

High-Temperature Rigid Metal Duct Hose for Fumes

Flexible Duct Hose with Wear Strip for Corrosive Fumes

Extreme-Temperature Flexible Duct Hose with Wear Strip for Fumes

Puncture- and Abrasion-Resistant Duct Hose for Metal Chips and Shavings

Continuous-Flex Duct Hose for Wood Chips and Plastic Pellets

Flame-Resistant Duct Hose for Wood Chips and Plastic Pellets

Antistatic Duct Hose for Dry Food

Blo-R-Vac Flexible Duct Hose for Dust

Flexible Duct Hose for Clean Environments

Very Flexible Duct Hose for Dust

Static-Control Very Flexible Duct Hose for Dust

High-Pressure Wet-Food and Beverage Hose

High-Pressure Wet-Food and Beverage Hose with Sanitary Fittings

High-Pressure Wet-Food and Beverage Hose with Cam-and-Groove Socket and Plug

High-Vacuum Hose with Claw-Clamp Fittings