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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Push-to-Connect Tube Fittings for Air
- Temperature Range: 0° to 170° F, except polybutylene plastic fittings are 32° to 140° F
- Tubing: Use with firm (Durometer 95A-45D) polyethylene plastic or polyurethane rubber
- Specifications Met: ISO 14743, except cartridges and polybutylene plastic fittings
Insert tubing into these fittings and an internal gripping ring and O-ring hold the tubing tight. They are also known as instant fittings. To disconnect, push on the release ring and pull the tubing out of the fitting. Fittings have good corrosion resistance. Use them in low-pressure applications.
Identification rings (sold separately) snap over the release ring so you can color-code your lines.
Clips (sold separately) align and organize your tubing and fittings.
For technical drawings and 3-D models, click on a part number.
Plugs insert into the push-to-connect end of a fitting.
| Tube Stem OD | Material | Color | Max. Pressure | Each | |
Polybutylene Plastic | |||||
|---|---|---|---|---|---|
| 5/32" | Polybutylene Plastic | Black | 150 psi @ 72° F | 000000000 | 00000 |
| 3/16" | Polybutylene Plastic | Black | 150 psi @ 72° F | 000000000 | 0000 |
| 1/4" | Polybutylene Plastic | Black | 150 psi @ 72° F | 000000000 | 0000 |
| 5/16" | Polybutylene Plastic | Black | 150 psi @ 72° F | 000000000 | 0000 |
| 3/8" | Polybutylene Plastic | Black | 150 psi @ 72° F | 000000000 | 0000 |
| 1/2" | Polybutylene Plastic | Black | 150 psi @ 72° F | 000000000 | 0000 |
| 4mm | Polybutylene Plastic | Black | 150 psi @ 72° F | 000000000 | 0000 |
| 6mm | Polybutylene Plastic | Black | 150 psi @ 72° F | 000000000 | 0000 |
| 8mm | Polybutylene Plastic | Black | 150 psi @ 72° F | 000000000 | 0000 |
| 10mm | Polybutylene Plastic | Black | 150 psi @ 72° F | 000000000 | 0000 |
| 12mm | Polybutylene Plastic | Black | 150 psi @ 72° F | 000000000 | 0000 |
Nickel-Plated Brass Push-to-Connect Tube Fittings for Air
- For Use With: Air, Lubricated Air
- Temperature Range: 0° to 140° F
- Tubing: Fittings with Release Ring and Fittings with no Release Type: Use with firm or hard (Durometer 95A-60D) nylon plastic, polyethylene plastic or polyurethane rubber
Fittings with Release Sleeve: Use with firm or hard (Durometer 95A-60D) polyethylene plastic or polyurethane rubber
Made of nickel-plated brass, these fittings have better corrosion resistance than unplated brass fittings. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring or sleeve and pull the tubing out of the fitting.
For technical drawings and 3-D models, click on a part number.
Plugs insert into the push-to-connect end of another fitting.
Moisture-Resistant Push-to-Connect Tube Fittings for Air and Water
- For Use With: Air, Lubricated Air, Water,
except Manifolds with Swivel: Air, Water - Temperature Range: 32° to 100° F
- Tubing: Use with firm (Durometer 90A-95A) nylon plastic or polyurethane rubber
These fittings won’t absorb moisture, so they’re good for water and high-humidity air applications. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. They have good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Plugs insert into the push-to-connect end of another fitting.
| Tube Stem OD | Material | Color | Max. Pressure | Each | |
| 1/8" | Polybutylene Plastic | Orange | 140 psi @ 72° F | 00000000 | 00000 |
| 5/32" | Polybutylene Plastic | Orange | 140 psi @ 72° F | 00000000 | 000 |
| 3/16" | Polybutylene Plastic | Orange | 140 psi @ 72° F | 00000000 | 000 |
| 1/4" | Polybutylene Plastic | Orange | 140 psi @ 72° F | 00000000 | 000 |
| 5/16" | Polybutylene Plastic | Orange | 140 psi @ 72° F | 00000000 | 0000 |
| 3/8" | Polybutylene Plastic | Orange | 140 psi @ 72° F | 00000000 | 0000 |
| 1/2" | Polybutylene Plastic | Orange | 140 psi @ 72° F | 00000000 | 0000 |
| 4mm | Polybutylene Plastic | Blue | 140 psi @ 72° F | 000000000 | 000 |
| 6mm | Polybutylene Plastic | Blue | 140 psi @ 72° F | 000000000 | 000 |
| 8mm | Polybutylene Plastic | Blue | 140 psi @ 72° F | 000000000 | 0000 |
| 10mm | Polybutylene Plastic | Blue | 140 psi @ 72° F | 000000000 | 0000 |
| 12mm | Polybutylene Plastic | Blue | 140 psi @ 72° F | 000000000 | 0000 |
| 16mm | Polybutylene Plastic | Blue | 140 psi @ 72° F | 000000000 | 0000 |
Brass Compression Tube Fittings for Air and Water
- For Use With: Air, Lubricated Air, Water
- Temperature Range: See table
- Tubing: Use with firm or hard (Durometer 1A-95A or Rockwell 15T 1-15T 60) nylon plastic, polyethylene plastic, polypropylene plastic or polyurethane rubber
- Specifications Met: SAE J512, except metric sizes
A single sleeve (ferrule) compresses the tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless fittings. They are brass for good corrosion resistance.
Tube supports (sold separately) are recommended if you want to use the fittings with soft polypropylene and polyethylene tubing to prevent the tube from collapsing.
Install plugs with a nut (sold separately) on the end of fittings to block the flow of air or water.
For technical drawings and 3-D models, click on a part number.
- For Use With: See table
- Temperature Range: See table
- Tubing:
Tube supports for use with air and lubricated air: Use with firm or soft (Durometer 1A-95A) polyethylene plastic or polyurethane rubber
Tube supports for use with air, lubricated air, and water: Use with hard or firm (Rockwell 15T 1-15T 60) nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber - Specifications Met: SAE J512, except metric sizes
For Tube | ||||||||
|---|---|---|---|---|---|---|---|---|
| OD | ID | For Use With | Tube Support Material | Max Pressure | Temp. Range, °F | Pkg. Qty. | Pkg. | |
| 4mm | 2mm | Air, Lubricated Air | Brass | 3300 psi @ 72° F | -65° to 250° | 25 | 000000000 | 000000 |
| Each | ||||||||
| 4mm | 2.7mm | Air, Lubricated Air, Water | Brass | 2100 psi @ 72° F | -75° to 550° | __ | 00000000 | 000 |
| 6mm | 4mm | Air, Lubricated Air, Water | Brass | 2100 psi @ 72° F | -75° to 550° | __ | 0000000 | 000 |
| 8mm | 6mm | Air, Lubricated Air, Water | Brass | 1900 psi @ 72° F | -75° to 550° | __ | 00000000 | 000 |
| 10mm | 8mm | Air, Lubricated Air, Water | Brass | 1300 psi @ 72° F | -75° to 550° | __ | 00000000 | 000 |
- For Use With: Air, Lubricated Air, Water
- Temperature Range: See table
- Tubing: Use with firm or hard (Durometer 1A-95A or Rockwell 15T 1-15T 60) nylon plastic, polyethylene plastic, polypropylene plastic or polyurethane rubber
- Specifications Met: SAE J512, except metric sizes
- For Use With: Air, Lubricated Air, Water
- Temperature Range: See table
- Tubing: Use with firm or hard (Durometer 1A-95A or Rockwell 15T 1-15T 60) nylon plastic, polyethylene plastic, polypropylene plastic or polyurethane rubber
- Specifications Met: SAE J512, except metric sizes