7" Hose | McMaster-Carr

Combining the heat resistance of metal with the flexibility of fabric, this fiberglass hose has a special coating that stands up to high temperatures. Hose is for use with smoke, water-based paint fumes, and welding fumes.

Neoprene-coated hose meets UL 94 HB and UL 94 V-0 for flame retardance and can also handle sparks.

Silicone-coated hose handles a wider temperature range than neoprene-coated hose.

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

Hose with Unfinished Ends

								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 Fiberglass
7"	7 3/16"	7"	50%	5 in. of Hg @ 72° F	9 psi @ 72° F	0.023"	Ribbed	Right Hand	Metal	UL 94 HB, UL 94 V-0	25	00000000	000000	000000
Red Silicone-Coated Fiberglass
7"	7 3/16"	7"	50%	5 in. of Hg @ 72° F	9 psi @ 72° F	0.023"	Ribbed	Right Hand	Metal	__	25	00000000	00000	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
7"	7 9/16"	7"	2 psi @ 72° F	0.047"	Smooth	Right Hand	Plastic	100	0000000	000000	000000

Flexible Duct Hose with Wear Strip for Corrosive Fumes

PTFE-Coated Fiberglass Hose

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.

PTFE-coated fiberglass hose is for use with smoke, butyl acetate fumes, and nitric acid fumes.

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
Gray PTFE-Coated Fiberglass
7"	7 5/16"	10 1/2"	25%	0.5 in. of Hg @ 72° F	1.7 psi @ 72° F	0.016"	Ribbed	Left Hand	Metal	__	25	00000000	000000	000000
Clear PFA Plastic
7"	7 5/16"	10 1/2"	20%	2 in. of Hg @ 72° F	3.2 psi @ 72° F	0.005"	Ribbed	Left Hand	Metal	UL 94 V-0	25	00000000	000000	000000

Blo-R-Vac Very Flexible Duct Hose for Fumes

Blue Hose

Clear Hose

Very Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Blue or Clear
Temperature Range: 20° to 160° F

Rugged, yet pliable PVC makes this a good general purpose hose for venting smoke, propane fumes, and water-based paint fumes. Blue hose is also for use with welding fumes. It meets UL 94 V-0 for flame retardance. Clear hose lets you see inside your line.

								Spiral
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Specifications Met	Max. Continuous Lg., ft.		Per Ft.
Per Foot
Blue PVC
7"	7 5/16"	2"	20%	2.8 in. of Hg @ 72° F	3.9 psi @ 72° F	0.02"	Ribbed	Right Hand	Metal	UL 94 V-0	50	0000000	000000
Clear PVC
7"	7 5/16"	2"	20%	2.8 in. of Hg @ 72° F	3.9 psi @ 72° F	0.02"	Ribbed	Right Hand	Metal	__	50	00000000	00000
													Each
Full Coil
Blue PVC
7"	7 5/16"	2"	20%	2.8 in. of Hg @ 72° F	3.9 psi @ 72° F	0.02"	Ribbed	Right Hand	Metal	UL 94 V-0	50	00000000	000000
Clear PVC
7"	7 5/16"	2"	20%	2.8 in. of Hg @ 72° F	3.9 psi @ 72° F	0.02"	Ribbed	Right Hand	Metal	__	50	000000000	000000

Bend-and-Stay Very Flexible Metal Duct Hose for Fumes

Very Flexible
Compatible Clamps: Worm-Drive and Twin-Ring Clamps
Temperature Range: Aluminum: -100° to 400° F; 304 Stainless Steel: -400° to 800° F

Form elbows and bends with this hose and it will hold its shape without support. Hose is not for continuous flexing. Use with smoke, sparks, paint fumes, welding fumes, and oil fumes.

Aluminum is lighter than stainless steel and has good corrosion resistance.

304 stainless steel is more durable than aluminum and has very good corrosion resistance.

Aluminum
ID	OD	Bend Radius	Material Thick.	Interior Surface Texture	Construction		2 ft.	5 ft.	10 ft.
7"	7 3/8"	8"	0.008"	Ribbed	Crimped Seam	000000	000000	000000	0000000
304 Stainless Steel
7"	7 3/8"	7 1/2"	0.005"	Ribbed	Crimped Seam	000000	00000	000000	000000

Economical Very Flexible Duct Hose for Fumes

Very Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Gray
Temperature Range: -20° to 250° F

Hose has a single thin layer of PVC-coated fiberglass for venting smoke, water-based paint fumes, and welding fumes.

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
PVC-Coated Fiberglass
7"	7 1/8"	2"	10%	0.07 in. of Hg @ 72° F	2 psi @ 72° F	0.005"	Ribbed	Right Hand	Metal	NFPA 90A, NFPA 90B, UL 181 Class 1	25	0000000	00000	00000

High-Temperature Rigid Metal Duct Hose for Fumes

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.

304 stainless steel has very good corrosion resistance.

Galvanized Steel
ID	OD	Bend Radius	Interior Surface Texture	Specifications Met		5 ft.	6 ft.	7 ft.	8 ft.	9 ft.	10 ft.	15 ft.	20 ft.	25 ft.
0.016" Material Thick.
7"	7 3/16"	23"	Ribbed	__	0000000	000000	000000	000000	0000000	0000000	0000000	0000000	0000000	0000000
0.02" Material Thick.
7"	7 1/4"	24"	Ribbed	__	0000000	00000	000000	000000	000000	000000	000000	000000	000000	000000
304 Stainless Steel
0.016" Material Thick.
7"	7 3/16"	23"	Ribbed	ASTM A240	00000000	000000	000000	000000	000000	000000	000000	000000	000000	000000
0.02" Material Thick.
7"	7 1/4"	24"	Ribbed	ASTM A240	00000000	000000	000000	000000	000000	000000	000000	000000	00000000	00000000

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
7"	7 7/16"	10 1/2"	60%	10 in. of Hg @ 72° F	7 psi @ 72° F	0.03"	Ribbed	Left Hand	Metal	UL 94 HB	25	000000000	000000	00000
White TPR Rubber
7"	7 7/16"	10 1/2"	60%	10 in. of Hg @ 72° F	7 psi @ 72° F	0.03"	Ribbed	Left Hand	Metal	UL 94 HB	25	00000000	00000	00000

High-Temperature Flexible Duct Hose for Dust

Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Black
Temperature Range: -60° to 300° F

The neoprene coating on this hose holds up under high heat. Hose meets UL 94 V-0 for flame retardance. It has a smooth interior for unrestricted flow. Hose is for use with lint, dust, and sawdust.

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.		1-11	12-Up
Neoprene-Coated Fiberglass
7"	7 1/8"	7"	50%	5 in. of Hg @ 72° F	9 psi @ 72° F	0.024"	Smooth	Left Hand	Metal	UL 94 V-0	12	00000000	000000	000000

Blo-R-Vac Flexible Duct Hose with Wear Strip for Dust

Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Black; Wear Strip is Orange
Temperature Range: -40° to 180° F

This general purpose hose for blowing and vacuum applications has a thick PVC wear strip that protects against damage caused by dragging. Hose is for use with lint, dust, and sawdust. It meets UL 94 HB and UL 94 V-0 for flame retardance.

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

								Spiral
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Specifications Met	Max. Continuous Lg., ft.		Per Ft.
PVC-Coated Polyester
7"	7 5/8"	3 1/2"	70%	10 in. of Hg @ 72° F	15 psi @ 72° F	0.03"	Ribbed	Right Hand	Metal	UL 94 HB, UL 94 V-0	25	0000000	000000

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
7"	7 3/8"	5"	25%	15 in. of Hg @ 72° F	10 psi @ 72° F	0.03"	Ribbed	Right Hand	Metal	25	0000000	000000	000000

Abrasion-Resistant Very Flexible Duct Hose for Dust

Black Hose

Very Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Clear or Black
Temperature Range: -40° to 200° F

A blend of rubber and plastic creates a hose that's flexible, yet tough enough to handle abrasive particles such as grinding dust and sawdust.

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
Black Polyurethane
7"	7 3/8"	6"	20%	8 in. of Hg @ 72° F	10 psi @ 72° F	0.02"	Ribbed	Right Hand	Metal	25	00000000	000000	000000

Very Flexible Duct Hose for Dust

Clear Hose

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.

Clear hose lets you monitor flow.

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
Clear PVC
7"	7 5/16"	1 1/2"	35%	4 in. of Hg @ 72° F	7 psi @ 72° F	0.015"	Ribbed	Left Hand	Metal	__	25	00000000	000000	00000
Black Neoprene-Coated Polyester
7"	7 3/8"	1 1/2"	20%	14 in. of Hg @ 72° F	8 psi @ 72° F	0.03"	Ribbed	Right Hand	Metal	UL 94 V-0	25	0000000	00000	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/sq.	Max. Continuous Lg., ft.		1-49	50-Up
Neoprene-Coated Polyester
7"	7 3/8"	5"	25%	14 in. of Hg @ 72° F	14 psi @ 72° F	0.03"	Ribbed	Right Hand	Metal	10³	50	0000000	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
7"	7 7/16"	7 1/2"	50%	18 in. of Hg @ 72° F	12 psi @ 72° F	0.035"	Ribbed	Left Hand	Metal	25	0000000	000000	000000
7"	7 1/2"	7"	70%	18 in. of Hg @ 72° F	26 psi @ 72° F	0.06"	Ribbed	Left Hand	Metal	25	0000000	00000	00000
Black Polyurethane
7"	7 7/16"	7"	30%	12 in. of Hg @ 72° F	16 psi @ 72° F	0.03"	Ribbed	Right Hand	Metal	25	00000000	00000	00000
7"	7 9/16"	7"	50%	12 in. of Hg @ 72° F	22 psi @ 72° F	0.045"	Ribbed	Right Hand	Metal	25	00000000	00000	00000

Static-Control Duct Hose for Metal Chips and Shavings

Flexible
Color: Black
Temperature Range: -40° to 140° F

SBR rubber is blended with carbon, which dissipates static electricity without the need for a grounding wire.

							Spiral					Per Ft.
ID	OD	Bend Radius	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Surface Resistivity, ohms-cm	Max. Continuous Lg., ft.		1-99	100-Up
SBR Rubber
7"	7 3/4"	14"	27 in. of Hg @ 72° F	30 psi @ 72° F	0.217"	Smooth	Right Hand	Plastic	10⁷	50	0000000	000000	000000

Blo-R-Vac Duct Hose for Wood Chips and Plastic Pellets

Clear Hose

Blue Hose

Flexible
Compatible Clamps: Worm-Drive and Quick-Release Clamps
Color: Clear or Blue
Temperature Range: 20° to 160° F

A thick layer of PVC with a metal spiral lets this hose handle particles heavier than dust, including cardboard fibers.

Clear hose lets you monitor flow.

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

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

								Spiral
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Specifications Met	Max. Continuous Lg., ft.		Per Ft.
Per Foot
Clear PVC
7"	7 1/2"	2"	50%	5 in. of Hg @ 72° F	13 psi @ 72° F	0.045"	Ribbed	Right Hand	Metal	__	50	0000000	000000
Blue PVC
7"	7 1/2"	2"	50%	5 in. of Hg @ 72° F	13 psi @ 72° F	0.045"	Ribbed	Right Hand	Metal	UL 94 V-0	50	0000000	00000
													Each
Full Coil
Clear PVC
7"	7 1/2"	2"	50%	5 in. of Hg @ 72° F	13 psi @ 72° F	0.045"	Ribbed	Right Hand	Metal	__	50	00000000	000000
Blue PVC
7"	7 1/2"	2"	50%	5 in. of Hg @ 72° F	13 psi @ 72° F	0.045"	Ribbed	Right Hand	Metal	UL 94 V-0	50	00000000	000000

Abrasion-Resistant Duct Hose with Wear
Strip for Wood Chips and Plastic Pellets

Flexible
Compatible Clamps: Worm-Drive and Bolt Clamps
Temperature Range: -20° to 250° F
Color: Black; Wear Strip is Silver

Tough both inside and out, this durable polyurethane hose has a metal spiral that acts as a wear strip to protect against damage. Hose is made of FDA listed materials and is for use with dry food such as rice and grain. It 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
7"	7 5/8"	10"	25%	6 in. of Hg @ 72° F	16 psi @ 72° F	0.03"	Ribbed	Left Hand	Metal	FDA Compliant 21 CFR 177.2600	25	00000000	000000	000000

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
7"	7 7/16"	2"	30%	16 in. of Hg @ 72° F	26 psi @ 72° F	0.026"	Ribbed	Right Hand	Metal	UL 94 V-0	25	0000000	000000	000000

Bend-and-Stay Metal Duct Hose for Wood Chips and Plastic Pellets

Flexible
Compatible Clamps: Worm-Drive Clamps
Temperature Range: -100° to 500° F

Lightweight, yet strong, this aluminum hose bends and maintains its shape without support. Hose is also for use with cardboard fibers.

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

Aluminum
ID	OD	Bend Radius	Compresses To	Material Thick.	Interior Surface Texture	Construction	Specifications Met		10 ft.	15 ft.	30 ft.
7"	7 3/8"	4 1/2"	20%	0.005"	Ribbed	Crimped Seam	UL 181 Class 0	000000	000000	000000	0000000

Crush-Resistant Duct Hose for Air

Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Blue
Temperature Range: -40° to 225° F

Step on this polypropylene hose and the flexible plastic spiral will pop back up unharmed.

							Spiral				Per Ft.
ID	OD	Bend Radius	Compresses To	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Max. Continuous Lg., ft.		1-49	50-Up
Polypropylene
7"	7 1/2"	6"	45%	8 psi @ 72° F	0.014"	Ribbed	Left Hand	Plastic	50	0000000	000000	000000

Bend-and-Stay Metal Duct Hose for Air

Very Flexible
Compatible Clamps: Worm-Drive Clamps
Temperature Range: -100° to 435° F

Unlike fabric duct hose, this lightweight aluminum hose can bend around corners and hold its shape. Hose is not for continuous flexing. The hose may need support.

Aluminum
ID	OD	Bend Radius	Compresses To	Material Thick.	Interior Surface Texture	Lg., ft.		Each
7"	7 1/16"	10 1/2"	30%	0.005"	Ribbed	8	00000000	000000

Easy-Store Duct Hose for Air

Very Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Silver
Temperature Range: 0° to 200° F

The most compressible hose we offer, this duct hose collapses to 5% of its length for easy storage.

Duct Hose

						Spiral
ID	OD	Bend Radius	Compresses To	Material Thick.	Interior Surface Texture	Direction	Material	Specifications Met	Lg., ft.		Each
Polyester Hose with Metalized Film Cover
7"	7 3/8"	7"	5%	0.001"	Ribbed	Left Hand	Metal	NFPA 90A, NFPA 90B, UL 181 Class 1	25	00000000	000000

Connectors

Slide these connectors into the end of your hose and secure with a clamp to create longer lengths.

Galvanized Steel
For Hose ID	ID	OD	Lg.	Specifications Met		Each
7"	6 31/32"	7"	5 3/8"	ASTM A653-07-CS Type B	00000000	000000

Insulated Bend-and-Stay Metal Duct Hose for Air

Very Flexible
Compatible Clamps: Worm-Drive Clamps
Color: Silver
Temperature Range: -100° to 435° F

Bend this hose into position in heating and cooling applications where it’s important to maintain the temperature of the air inside the hose. Unlike fabric duct hose, this lightweight aluminum hose holds its shape once it’s curved around corners. It’s insulated with a layer of fiberglass, so it keeps air flowing through at a consistent temperature even when it’s routed through hot or cold spaces. The metalized film cover seals out moisture, protecting the insulation underneath.

This hose is not meant to be continuously flexed. Lengths beyond 6 ft. may need support.

									Spiral		Insulation
ID	OD	Bend Radius	Compresses To	Max. Airflow, fpm	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Material	R Value	Thick.	Specifications Met	Lg., ft.		Each
Aluminum Hose with Metalized Film Cover
7"	10 1/16"	5 1/2"	25%	5,000	0.88 in. of Hg @ 72° F	0.4 psi @ 72° F	0.006"	Ribbed	Right Hand	Metal	Fiberglass	4.2	1 1/2"	NFPA 90A/90B, UL 181 Class 1	8	0000000	0000000

Duct Hose Connectors

Slide these connectors into the ends of duct hose and secure with a clamp.

Aluminum is lightweight.

Galvanized steel has fair corrosion resistance.

304 stainless steel offers very good corrosion resistance.

Couplers

Inch
For Hose ID	Lg.	Shape	Temperature Range, ° F	Material Thick.		Each
Aluminum
7"	4"	Straight	-100° to 400°	0.04"	0000000	000000
304 Stainless Steel
7"	4"	Straight	-400° to 800°	0.02"	0000000	00000

Wyes

Galvanized Steel
For Hose ID	Lg.	Shape	Temperature Range, ° F	Material Thick.		Each
7"	4"	Wye	-100° to 550°	0.012"	0000000	000000