How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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About Plastic and Rubber Tubing
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About Hose
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About Duct Hose
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High-Temperature Coolant Hose
- Temperature Range: -65° to 350° F
- Material: Silicone Rubber
- Color: Blue
- For Clamp Type: Worm Drive
Silicone rubber gives this hose, often called radiator hose, the ability to handle high-heat conditions. Hose with steel wire reinforcement resists kinking.
For technical drawings and 3-D models, click on a part number.
Coolant Hose
- Temperature Range: 0° to 210° F
- Material: Buna-N Rubber
- Color: Black with Green Stripe
- For Clamp Type: Worm Drive
Commonly known as radiator hose, this hose is for low-pressure coolant applications.
For technical drawings and 3-D models, click on a part number.
Per Ft. | ||||||
|---|---|---|---|---|---|---|
| ID | OD | Max. Pressure | Max. Continuous Lg., ft. | 1-24 | 25-Up | |
| 2 3/8" | 2 7/8" | 35 psi @ 72° F | 25 | 00000000 | 000000 | 000000 |
Flexible Coolant Hose
- Temperature Range: -20° to 210° F
- Maximum Vacuum: 28" of Hg @ 72° F
- Material: Buna-N Rubber with Neoprene Rubber Cover
- Color: Black with Yellow Stripe
- For Clamp Type: Worm Drive
With a tighter bend radius than other coolant hose, this hose can easily twist and turn around equipment.
For technical drawings and 3-D models, click on a part number.
Per Ft. | |||||||
|---|---|---|---|---|---|---|---|
| ID | OD | Bend Radius | Max. Pressure | Max. Continuous Lg., ft. | 1-24 | 25-Up | |
| 2 3/8" | 2 7/8" | 7 1/8" | 30 psi @ 72° F | 25 | 0000000 | 000000 | 000000 |
Extreme-Temperature Coolant Hose
- Temperature Range: -65° to 500° F
- Material: Silicone Rubber
- Color: Red
- For Clamp Type: Worm Drive
Reinforced by aramid fabric, this silicone rubber hose handles higher temperatures than any other coolant hose we offer. It’s designed to handle the heat of a turbocharged engine. The reinforcement also makes it last longer than standard silicone rubber coolant hose when exposed to extreme vibration.
For technical drawings and 3-D models, click on a part number.
| ID | OD | Max. Pressure | Internal Reinforcement | Lg., ft. | Each | |
| 2 3/8" | 2 5/8" | 30 psi @ 72° F | Aramid Fabric | 3 | 0000000 | 000000 |
Ultra-High-Vacuum Hose with Flanges
Often found in semiconductor manufacturing and other demanding industrial applications, this hose handles nearly perfect vacuum. Sharp edges on the flanges dig into a copper gasket (sold separately) as you bolt the flanges together, creating a tighter seal than fittings with a rubber gasket. This allows the hose to maintain the ultra-high vacuum necessary for vacuum coating, heat treating, leak testing, and analyzing gases. The flanges are commonly referred to as ConFlat (CF) and UHV fittings. Thanks to its ribbed interior, this hose is flexible enough to connect misaligned components. That's why it's also called a bellows. The ribbing reduces vibration between components, such as vacuum pumps, valves, and chambers. Both the hose and flanges are made of stainless steel, so they resist rusting.
One of the flanges rotates, so you can easily match up the bolt holes with another flange. Make sure your mating flanges are the same size as these flanges.
Bolt kits are required to make a complete connection.
For technical drawings and 3-D models, click on a part number.
- Temperature Range: -200° to 900° F
- Maximum Vacuum: 10 -13 torr @ 72° F
- Material: 321 Stainless Steel
- Fitting Material: 304 Stainless Steel
Bolt Hole | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | Flange OD | High-Vacuum Flange Size | High Vacuum Connection Type | ID | OD | Wall Thickness | Bend Radius | Bolt Circle Dia. | Dia. | No. of | Each | |
Fixed Flange × Rotating Flange | ||||||||||||
6" Lg. | ||||||||||||
| 2 1/2" | 4 1/2" | 63 | CF | 2 3/8" | 3 1/4" | 0.008" | 4 1/4" | 3 5/8" | 21/64" | 8 | 00000000 | 0000000 |
12" Lg. | ||||||||||||
| 2 1/2" | 4 1/2" | 63 | CF | 2 3/8" | 3 1/4" | 0.008" | 4 1/4" | 3 5/8" | 21/64" | 8 | 00000000 | 000000 |
24" Lg. | ||||||||||||
| 2 1/2" | 4 1/2" | 63 | CF | 2 3/8" | 3 1/4" | 0.008" | 4 1/4" | 3 5/8" | 21/64" | 8 | 00000000 | 000000 |
36" Lg. | ||||||||||||
| 2 1/2" | 4 1/2" | 63 | CF | 2 3/8" | 3 1/4" | 0.008" | 4 1/4" | 3 5/8" | 21/64" | 8 | 00000000 | 000000 |
| For Tube OD | For Flange OD | Gasket Material | Specifications Met | Each | |
| 2 1/2" | 4 1/2" | Copper | ASTM F68 | 0000000 | 00000 |
| For Flange OD | For High-Vacuum Flange Size | Bolt Dia. | Thread Size  | No. of Bolts Included | No. of Nuts Included | No. of Washers Included | Bolt Material | Each | |
| 4 1/2" | 63 | 5/16" | 5/16"-24 | 8 | 8 | 16 | 18-8 Stainless Steel | 0000000 | 000000 |
Hard Plastic Tubing for Food and Beverage
Strong, hard walls give this tubing extra support in high-pressure and vacuum applications. It’s made of FDA listed materials, so it’s suitable for use with food and beverage. Free of plasticizers like DEHP, it won’t impart tastes or odors to the fluid passing through it.
PVC tubing has harder walls than polyethylene tubing and can handle higher pressures. It meets NSF/ANSI Standard 51 for food contact. Tubing is rigid and will not bend. It is clear, so you can easily monitor flow.
For technical drawings and 3-D models, click on a part number.
- Rigid
- Compatible with Socket Connect Tube Fittings
- Hard (Durometer 80D)
- Temperature Range: -40° to 140° F
- Specifications Met: FDA Compliant 21 CFR 175.300, NSF/ANSI 51
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.
For technical drawings and 3-D models, click on a part number.