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.
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.
Plugs insert into the push-to-connect end of another fitting.
Moisture-Resistant Push-to-Connect Tube Fittings for Air and Water
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 Use With: Air, Lubricated Air, Water
- Temperature Range: 32° to 100° F
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 |
| 3.2mm | Polybutylene Plastic | Blue | 140 psi @ 72° F | 000000000 | 000 |
| 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.
For Tube | ||||||
|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | Each | |
| 1/4" | 0.03" | Brass | 300 psi @ 72° F | -65° to 250° | 000000000 | 00000 |
Install plugs on the end of fittings to block the flow of air or water.
- Temperature Range:
Inch: -65° to 250° F
Metric: -40° to 250° F - Tubing:
Tube supports with 135 psi @ 75° F or 165 psi @ 75° F max. pressures: Use with firm or soft polyethylene plastic or PVC plastic
Tube supports with all other max. pressures: Use with firm or soft (Durometer 1A-95A) polyethylene plastic or polypropylene plastic
For Tube | ||||||
|---|---|---|---|---|---|---|
| OD | ID | Tube Support Material | Max Pressure | Pkg. Qty. | Pkg. | |
| 1/4" | 1/8" | Brass | 300 psi @ 72° F | 10 | 000000000 | 000000 |
| 1/4" | 5/32" | Brass | 165 psi @ 75° F | 10 | 000000000 | 00000 |
| 4mm | 2mm | Brass | 3300 psi @ 72° F | 25 | 000000000 | 00000 |
| 4mm | 2.5mm | Brass | 3300 psi @ 72° F | 10 | 000000000 | 00000 |
| 8mm | 5.5mm | Brass | 1450 psi @ 72° F | 5 | 000000000 | 0000 |
| 10mm | 7mm | Brass | 1080 psi @ 72° F | 5 | 000000000 | 00000 |
| 10mm | 7.5mm | Brass | 1080 psi @ 72° F | 5 | 000000000 | 00000 |
- Temperature Range: -75° to 550° F
- Tubing: Use with hard or firm (Rockwell 15T 1-15T 60) nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
- For Use With:
Short nuts: Air, Water, Lubricated Air
Long nuts: Air, Water, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil - Temperature Range: See table
- Tubing:
Short nuts: Use with firm or hard (Durometer 1A-95A or Rockwell 15T 1-15T 60) nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
Long nuts: Use with firm or hard (Durometer 1A-95A) copper, nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber - Specifications Met: See table
For Tube | |||||||
|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Nut Material | Max. Pressure | Temp. Range, °F | Specifications Met | Each | |
Short Nuts  | |||||||
| 1/4" | 0.03" | Brass | 300 psi @ 72° F | -65° to 250° | SAE J512 | 000000000 | 00000 |
| 4mm | 1mm | Brass | 2100 psi @ 72° F | -75° to 550° | __ | 00000000 | 000 |
| 6mm | 1mm | Brass | 2100 psi @ 72° F | -75° to 550° | __ | 0000000 | 000 |
| 8mm | 1mm | Brass | 1900 psi @ 72° F | -75° to 550° | __ | 00000000 | 000 |
| 10mm | 1mm | Brass | 1300 psi @ 72° F | -75° to 550° | __ | 00000000 | 0000 |
Long Nuts | |||||||
| 1/4" | 0.03" | Brass | 300 psi @ 72° F | -65° to 250° | UL Listed | 000000000 | 0000 |
- For Use With:
UL Listed sleeves: Air, Water, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil
All other sleeves: Air, Water, Lubricated Air - Temperature Range: See table
- Tubing:
UL Listed sleeves: Use with firm or hard (Durometer 1A-95A) copper, nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
All other sleeves: 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: See table
For Tube | Sleeve | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wall Thick. | Material | Color | Max. Pressure | Temp. Range, °F | Specifications Met | Pkg. Qty. | Pkg. | |
| 1/4" | 0.03" | Acetal Plastic | White | 300 psi @ 72° F | -65° to 250° | SAE J512 | 10 | 000000000 | 00000 |
| 1/4" | 0.03" | Brass | __ | 300 psi @ 72° F | -65° to 200° | UL Listed | 10 | 000000000 | 0000 |
| Each | |||||||||
| 4mm | 1mm | Brass | __ | 2100 psi @ 72° F | -75° to 550° | __ | __ | 00000000 | 000 |
| 6mm | 1mm | Brass | __ | 2100 psi @ 72° F | -75° to 550° | __ | __ | 0000000 | 000 |
| 8mm | 1mm | Brass | __ | 1900 psi @ 72° F | -75° to 550° | __ | __ | 00000000 | 000 |
| 10mm | 1mm | Brass | __ | 1300 psi @ 72° F | -75° to 550° | __ | __ | 00000000 | 000 |