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Medium NACA Duct (1 Outlet), for 3" Hose

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High Temp 1-Ply Silicone Air Duct Hose, 450F, Orange Only

Silicone Rubber Air Duct Hose is popular for brake cooling ducts due to its high temperature capability (maximum 450° F continuous / 500° F intermittent). Lower-temperature applications can use our Neoprene Air Duct Hose (Part No. 3620).

This hose is extremely flexible and pliable, but a bronze coated spring-steel wire support helix prevents it from collapsing. The fiberglass fabric cover and fiberglass cord are both impregnated and coated with silicone rubber. Lengths can be screwed together to form a continuous length if you've got leftovers around. Red-orange color only. This silicone duct hose is not made in any other color.

Note: These ducts are manufactured in 12 foot nominal lengths but only measure 12 feet when stretched tightly. The actual lengths will generally measure several inches less than nominal when relaxed.

Silicone Air Duct Hose
Nominal ID	1.5 Inch	2 Inch	2.5 Inch	3 Inch	3.5 Inch	4 Inch	4.5 Inch	5 Inch	5.5 Inch
Pressure Rating*	18 psi	15 psi	14 psi	13 psi	12.5 psi	12 psi	11 psi	10 psi	9.5 psi
Vacuum Rating*	18 in Hg	14 in Hg	12.5 in Hg	11 in Hg	10 in Hg	10 in Hg	8.5 in Hg	7.5 in Hg	6 in Hg
Centerline Bend Radius	1.2"	1.72"	2.15"	2.55"	3.1"	3.6"	4.15"	4.6"	5.2"

* Pressure and vacuum ratings are all for straight lengths of hose at 72° F. Temp range -65° F to +450° F.

The 3 Inch size is most popular for brake ducting on racecars. This size fits most of our NACA ducts and air inlet ducts.

Enter desired order quantities below, then click the "Add selected quantities to cart" button.

Order Qty	Part No.	Desc.	Price	Status
1.50 inch Inside Diameter
	3621-1.50-3 FOOT Condition: New SKU: 76833	High Temp Silicone Air Duct, 1-Ply, 1.5 inch ID, 3 ft length	$36.99	In Stock
	3621-1.50-6 FOOT Condition: New SKU: 76834	High Temp Silicone Air Duct, 1-Ply, 1.5 inch ID, 6 ft length	$68.99	In Stock
	3621-1.50-12 FOOT Condition: New SKU: 76832	High Temp Silicone Air Duct, 1.5 inch ID, 12 ft length	$129.99	In Stock
2.00 inch Inside Diameter
	3621-2.00-3 FOOT Condition: New SKU: 52079	High Temp Silicone Air Duct, 1-Ply, 2 inch ID, 3 foot length	$34.99	In Stock
	3621-2.00-6 FOOT Condition: New SKU: 38675	High Temp Silicone Air Duct, 1-Ply, 2 inch ID, 6 foot length	$65.99	In Stock
	3621-2.00-12 FOOT Condition: New SKU: 38676	High Temp Silicone Air Duct, 1-Ply, 2 inch ID, 12 ft length	$123.99	In Stock
2.25 inch Inside Diameter
	3621-2.25-3 FOOT Condition: New SKU: 84501	High Temp Silicone Air Duct, 2.25 inch ID, 3 ft length	$43.99	In Stock
	3621-2.25-6 FOOT Condition: New SKU: 84502	High Temp Silicone Air Duct, 2.25 inch ID, 6 ft length	$82.99	In Stock
	3621-2.25-12 FOOT Condition: New SKU: 84503	High Temp Silicone Air Duct, 2.25 inch ID, 12 ft length	$154.99	In Stock
2.50 inch Inside Diameter
	3621-2.50-3 FOOT Condition: New SKU: 35310	High Temp Silicone Air Duct, 1-Ply, 2.5 inch ID, 3 ft length	$38.99	In Stock
	3621-2.50-6 FOOT Condition: New SKU: 36717	High Temp Silicone Air Duct, 1-Ply, 2.5 inch ID, 6 ft length	$72.99	In Stock
	3621-2.50-12 FOOT Condition: New SKU: 36718	High Temp Silicone Air Duct, 2.5 inch ID, 12 ft length	$135.99	In Stock
3.00 inch Inside Diameter
	3621-3.00-3 FOOT Condition: New SKU: 35311	High Temp Silicone Air Duct, 1-Ply, 3 inch ID, 3 foot length	$41.99	In Stock
	3621-3.00-6 FOOT Condition: New SKU: 36719	High Temp Silicone Air Duct, 1-Ply, 3 inch ID, 6 foot length	$78.99	In Stock
	3621-3.00-12 FOOT Condition: New SKU: 36720	High Temp Silicone Air Duct, 1-Ply, 3 inch ID, 12 ft length	$147.99	In Stock
3.50 inch Inside Diameter
	3621-3.50-3 FOOT Condition: New SKU: 76837	High Temp Silicone Air Duct, 1-Ply, 3.5 inch ID, 3 ft length	$45.99	In Stock
	3621-3.50-6 FOOT Condition: New SKU: 76838	High Temp Silicone Air Duct, 1-Ply, 3.5 inch ID, 6 ft length	$85.99	In Stock
	3621-3.50-12 FOOT Condition: New SKU: 76836	High Temp Silicone Air Duct, 3.5 inch ID, 12 ft length	$162.99	In Stock
4.00 inch Inside Diameter
	3621-4.00-3 FOOT Condition: New SKU: 35312	High Temp Silicone Air Duct, 1-Ply, 4 inch ID, 3 foot length	$48.99	In Stock
	3621-4.00-6 FOOT Condition: New SKU: 38216	High Temp Silicone Air Duct, 1-Ply, 4 inch ID, 6 foot length	$92.99	In Stock
	3621-4.00-12 FOOT Condition: New SKU: 38217	High Temp Silicone Air Duct, 1-Ply, 4 inch ID, 12 ft length	$172.99	In Stock
4.50 inch Inside Diameter
	3621-4.50-3 FOOT Condition: New SKU: 76841	High Temp Silicone Air Duct, 1-Ply, 4.5 inch ID, 3 ft length	$57.99	Not In Stock notify me when available
	3621-4.50-6 FOOT Condition: New SKU: 76842	High Temp Silicone Air Duct, 1-Ply, 4.5 inch ID, 6 ft length	$109.99	Not In Stock notify me when available
	3621-4.50-12 FOOT Condition: New SKU: 76840	High Temp Silicone Air Duct, 4.5 inch ID, 12 ft length	$204.99	Not In Stock notify me when available
5.00 inch Inside Diameter
	3621-5.00-3 FOOT Condition: New SKU: 35314	High Temp Silicone Air Duct, 1-Ply, 5 inch ID, 3 foot length	$61.99	In Stock
	3621-5.00-6 FOOT Condition: New SKU: 38214	High Temp Silicone Air Duct, 1-Ply, 5 inch ID, 6 foot length	$115.99	In Stock
	3621-5.00-12 FOOT Condition: New SKU: 38215	High Temp Silicone Air Duct, 1-Ply, 5 inch ID, 12 ft length	$217.99	In Stock
5.50 inch Inside Diameter
	3621-5.50-3 FOOT Condition: New SKU: 76845	High Temp Silicone Air Duct, 1-Ply, 5.5 inch ID, 3 ft length	$66.99	In Stock
	3621-5.50-6 FOOT Condition: New SKU: 76846	High Temp Silicone Air Duct, 1-Ply, 5.5 inch ID, 6 ft length	$126.99	In Stock
	3621-5.50-12 FOOT Condition: New SKU: 76844	High Temp Silicone Air Duct, 5.5 inch ID, 12 ft length	$237.99	In Stock

Customers who purchased this item also purchased
Stainless Steel Worm-Drive Hose Clamp with Metal Lining	Small NACA Duct (1 Outlet), for 2.5" Hose	Air Inlet, Extra-Small Rectangle, 6 x 3.5 inch, for 3" Hose	Air Inlet, Small Bumper Mount (1 Outlet), for 3" Hose	Medium NACA Duct (1 Outlet), for 3" Hose

High Temp 1-Ply Silicone Air Duct Hose, 450F, Orange Only

Order Qty

Part No.

Desc.

Price

Status

1.50 inch Inside Diameter

2.00 inch Inside Diameter

2.25 inch Inside Diameter

2.50 inch Inside Diameter

3.00 inch Inside Diameter

3.50 inch Inside Diameter

4.00 inch Inside Diameter

4.50 inch Inside Diameter

5.00 inch Inside Diameter

5.50 inch Inside Diameter

Customers who purchased this item also purchased

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Cooling Air Ducting Hose