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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Compression Fittings for Plastic Tubing—Chemicals
- For Use With: PFA Plastic: Hydrochloric Acid, Sulfuric Acid
PTFE Plastic: Alcohol, Ammonia, Benzoic Acid, Bleach, Bromine, Coolant, Fluoboric Acid, Hydrochloric Acid, Hydrofluoric Acid, Nitric Acid, Organic Solvents, Sodium Carbonate, Sulfuric Acid - Temperature Range: PFA Plastic: 0° to 350° F
PTFE Plastic: -40° to 185° F - Tubing: PFA Plastic: Use with hard (Durometer 50D-65D) PFA or PTFE plastic
PTFE Plastic: Use with hard (Durometer 60D) PFA or PTFE plastic
A 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. Fittings that include a gripper sleeve on the tubing create an even tighter seal.
PFA fittings stand up to harsh substances. They’re made through a melting process.
For technical drawings and 3-D models, click on a part number.
Straight Adapters, Tube × Male Threaded Pipe
| For Tube OD | Pipe Size  | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
|---|---|---|---|---|---|---|
| 1/8" | 1/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
| 1/8" | 1/4 | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
| 1/4" | 1/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4" | 3/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4" | 1/2 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4" | 3/4 | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
| 3/8" | 1/8 | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
| 3/8" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 3/8" | 3/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 3/8" | 1/2 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/2" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/2" | 3/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/2" | 1/2 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/2" | 3/4 | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
| 3/4" | 1/2 | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
| 3/4" | 3/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
Straight Adapters, Tube × Female Threaded Pipe
| For Tube OD | Pipe Size | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
|---|---|---|---|---|---|---|
| 1/8" | 1/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
| 1/8" | 1/4 | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 00000 |
| 1/4" | 1/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4" | 3/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
| 1/4" | 1/2 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
| 3/8" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
| 3/8" | 3/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
| 3/8" | 1/2 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
| 1/2" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
| 1/2" | 3/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
| 1/2" | 1/2 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
| 1/2" | 3/4 | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
| 3/4" | 3/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
Through-Wall Straight Adapters, Tube × Male Threaded Pipe
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
| For Tube OD | Pipe Size | Material | Color | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
NPT Threads | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 1/2" | 1/4" | 000000000 | 000000 |
| 3/8" | 3/8 | PFA Plastic | White | 120 psi @ 72° F | 5/8" | 1/4" | 000000000 | 000000 |
| 1/2" | 1/2 | PFA Plastic | White | 120 psi @ 72° F | 3/4" | 1/4" | 000000000 | 000000 |
| 3/4" | 3/4 | PFA Plastic | White | 120 psi @ 72° F | 1" | 1/2" | 000000000 | 000000 |
90° Elbow Adapters, Tube × Male Threaded Pipe
| For Tube OD | Pipe Size | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
|---|---|---|---|---|---|---|
| 1/8" | 1/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
| 1/8" | 1/4 | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 00000 |
| 1/4" | 1/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4" | 3/8 | PFA Plastic | White | 120 psi @ 72° F | 000000000 | 00000 |
| 1/4" | 1/2 | PFA Plastic | White | 120 psi @ 72° F | 000000000 | 00000 |
| 3/8" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 3/8" | 3/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 3/8" | 1/2 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/2" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/2" | 3/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/2" | 1/2 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 3/4" | 1/2 | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
| 3/4" | 3/4 | PFA Plastic | White | 120 psi @ 72° F | 000000000 | 000000 |
90° Elbow Adapters, Tube × Female Threaded Pipe
Inline Tee Adapters, Tube × Male Threaded Pipe
Inline tees are also known as branch tees.
| For Tube OD | Pipe Size | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
|---|---|---|---|---|---|---|
| 1/8" | 1/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 0000000 |
| 1/8" | 1/4 | PFA Plastic | White | 125 psi @ 72° F | 000000000 | 000000 |
| 1/4" | 1/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 1/4" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 00000 |
| 3/8" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 000000000 | 000000 |
| 3/8" | 3/8 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
| 3/8" | 1/2 | PFA Plastic | White | 120 psi @ 72° F | 000000000 | 000000 |
| 1/2" | 1/4 | PFA Plastic | White | 120 psi @ 72° F | 000000000 | 000000 |
| 1/2" | 1/2 | PFA Plastic | White | 120 psi @ 72° F | 000000000 | 000000 |
| 3/4" | 3/4 | PFA Plastic | White | 120 psi @ 72° F | 00000000 | 000000 |
