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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Tight-Seal Plastic Barbed Tube Fittings for Air and Water
Minimize leaks in your line—these fittings have a single barb that creates a smooth clamping surface for extra-tight connections. Fittings are nylon for excellent impact and abrasion resistance.
- Temperature Range: -50° to 275° F
- Tubing: Use with firm (Durometer 75A-80A) polyurethane rubber or PVC plastic
- Clarity: Black: Opaque; Off-White: Semi-Clear
| For Tube ID | Material | Max. Pressure | Pkg. Qty. | Choose a Color | Pkg. | |
| 1/16" | Nylon Plastic | Not Rated | 10 | 0000000 | 00000 | |
| 3/32" | Nylon Plastic | Not Rated | 10 | 0000000 | 0000 | |
| 1/8" | Nylon Plastic | Not Rated | 10 | 0000000 | 0000 | |
| 5/32" | Nylon Plastic | Not Rated | 10 | 0000000 | 0000 | |
| 3/16" | Nylon Plastic | Not Rated | 10 | 0000000 | 00000 | |
| 1/4" | Nylon Plastic | Not Rated | 10 | 0000000 | 00000 | |
| 3/8" | Nylon Plastic | Not Rated | 10 | 0000000 | 00000 | |
| 1/2" | Nylon Plastic | Not Rated | 10 | 0000000 | 00000 | |
| 5/8" | Nylon Plastic | Not Rated | 10 | 0000000 | 00000 |
Brass Low-Pressure Barbed Tube Fittings for Air and Water
Made of brass, these fittings resist corrosion from water and are more durable than plastic and aluminum fittings. Use them for low-pressure HVAC systems, drain lines, and other fluid transfer applications, as well as air lines where water vapor and condensate form. The barbs tightly grip tubing for a secure hold. For the best grip, make sure your tubing is squarely cut.
- Temperature Range: See table
- Tubing: See table
For Tube | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Tube ID | Number of Barbs | Material | Max. Pressure | Temp. Range, °F | Lg. | Material | Hardness Rating | Hardness | Each | |
| 1/16" | Single | Brass | 125 psi @ 72° F | -40° to 500° | 13/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 5/64" | Single | Brass | 125 psi @ 72° F | -40° to 500° | 13/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 3/32" | Single | Brass | 125 psi @ 72° F | -40° to 500° | 27/64" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 1/8" | Single | Brass | 125 psi @ 72° F | -40° to 500° | 17/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 0.17" | Multiple | Brass | 100 psi @ 72° F | -65° to 75° | 9/16" | Polyurethane Rubber | Firm | Durometer 95A | 000000000 | 0000 |
| 1/4" | Multiple | Brass | 100 psi @ 72° F | -65° to 75° | 11/16" | Polyurethane Rubber | Firm | Durometer 95A | 000000000 | 0000 |
| 3/8" | Multiple | Brass | 100 psi @ 72° F | -65° to 75° | 13/16" | Polyurethane Rubber | Firm | Durometer 95A | 000000000 | 0000 |
| 4mm | Single | Brass | 125 psi @ 72° F | -40° to 500° | 17/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 6mm | Single | Brass | 125 psi @ 72° F | -40° to 500° | 13/16" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 0000 |
| 8mm | Single | Brass | 125 psi @ 72° F | -40° to 500° | 1 1/32" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 10mm | Single | Brass | 125 psi @ 72° F | -40° to 500° | 1 1/8" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
| 12mm | Single | Brass | 125 psi @ 72° F | -40° to 500° | 1 5/16" | Polyurethane Rubber | Firm | Durometer 85A | 00000000 | 00000 |
Stainless Steel Barbed Tube Fittings for Food and Beverage
- Temperature Range: -20° to 750° F
- Tubing: Use with soft or firm (Durometer 65A-90A) polyurethane rubber or PVC plastic
- Specifications Met: See table
Made of stainless steel, these fittings are more durable than plastic barbed tube fittings for food and beverage. They have single or multiple barbs that grip onto tubing.
Plugs insert into the end of a fitting.
| For Tube ID | Material | Max. Pressure | Specifications Met | Pkg. Qty. | Pkg. | |
| 1/4" | 303 Stainless Steel | 270 psi @ 72° F | ASTM A581, ASTM A582 | 5 | 00000000 | 00000 |
| 5/16" | 303 Stainless Steel | 270 psi @ 72° F | ASTM A581, ASTM A582 | 5 | 00000000 | 0000 |
| 3/8" | 303 Stainless Steel | 270 psi @ 72° F | ASTM A581, ASTM A582 | 5 | 00000000 | 0000 |
| 1/2" | 303 Stainless Steel | 270 psi @ 72° F | ASTM A581, ASTM A582 | 5 | 00000000 | 00000 |
Barbed Tube Fittings for Drinking Water
- Temperature Range: 32° to 180° F
- Tubing:
All Fittings: Use with hard polyethylene plastic
Socket-Connect Fittings: Use with hard polyethylene plastic or copper - Specifications Met: See table
Connect these fittings to tubing with a ring and a crimping tool (both sold separately). They have multiple barbs that grip onto tubing for a secure hold. Fittings are compatible with Viega PEX tubing. Safe to use with drinking water, these fittings meet the strict standards of NSF/ANSI 61.
Plugs insert into the end of a fitting.
| For Tube ID | Material | Max. Pressure | Specifications Met | Pkg. Qty. | Pkg. | |
| 3/8" | PPSU | 160 psi @ 72° F | ASTM F2159, NSF/ANSI 61 | 10 | 00000000 | 00000 |
| 1/2" | PPSU | 160 psi @ 72° F | ASTM F2159, NSF/ANSI 61 | 10 | 00000000 | 0000 |
| 3/4" | PPSU | 160 psi @ 72° F | ASTM F2159, NSF/ANSI 61 | 10 | 00000000 | 0000 |
| 1" | PPSU | 160 psi @ 72° F | ASTM F2159, NSF/ANSI 61 | 10 | 00000000 | 00000 |
High-Pressure Barbed Plastic Pipe Fittings for Water
Use these barbed pipe fittings in industrial plumbing, water processing, and water supply applications up to 200 psi. They meet NSF/ANSI Standard 61 for drinking water. Also known as insert fittings, they have a barbed end that slides into semi-flexible plastic pipe and secures with a clamp (sold separately). Since you don't have to wait for cement to dry, they're quicker to install than socket-connect fittings. Fittings are PVC, which has good strength and corrosion resistance. They meet ASTM D1784 specifications and testing requirements for material quality and ASTM D2609 specifications for barb dimensions.
Note: Barbed pipe fittings are measured by pipe size, which is not an actual measured size, but rather an industry designation.
Warning: Never use plastic pipe fittings and pipe with compressed air or gas.
Sealants cannot be sold to Colorado, Connecticut, District of Columbia, Delaware, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, New Hampshire, New Jersey, Northern Virginia, New York, Ohio, Pennsylvania, Rhode Island, or Utah due to local VOC (Volatile Organic Compounds) regulations.
- For Use With: Drinking Water, Water
- Maximum Temperature: 140° F
- Specifications Met: ASTM D1784, ASTM D2609, NSF/ANSI 61
- Pipe Nipples and Pipe: Use Semi-Flexible Polyethylene Plastic
| Pipe Size | Barb OD | Material | Color | Max. Pressure | Each | |
| 1/2 | 0.65" | PVC Plastic | Dark Gray | 200 psi @ 72° F | 00000000 | 00000 |
| 3/4 | 0.85" | PVC Plastic | Dark Gray | 200 psi @ 72° F | 00000000 | 0000 |
| 1 | 1.08" | PVC Plastic | Dark Gray | 200 psi @ 72° F | 00000000 | 0000 |
| 1 1/4 | 1.41" | PVC Plastic | Dark Gray | 200 psi @ 72° F | 00000000 | 0000 |
| 1 1/2 | 1.65" | PVC Plastic | Dark Gray | 160 psi @ 72° F | 00000000 | 0000 |
| 2 | 2.11" | PVC Plastic | Dark Gray | 160 psi @ 72° F | 00000000 | 0000 |