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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High-Temperature PTFE Pipe Fittings for Chemicals
Extreme temperatures are no problem for these fittings—they’re made of PTFE, so they can withstand a wider temperature range than any of our other plastic pipe fittings for chemicals. They have the chemical resistance to stand up to acid and solvents. Fittings have thick, Schedule 80 walls for heavy duty industrial applications. The material won’t leach contaminates into the line, so these fittings are commonly used in high-purity processes, such as semiconductor and clean room applications. They have a super-smooth interior for unrestricted flow. Apply a non-hardening, plastic-compatible sealant to the male threads to prevent leaks. Tape or sealants with PTFE are not recommended for plastic-to-plastic threaded connections. When making a threaded connection be careful not to overtighten the threads. To prevent cracks and leaks, finger tighten the fitting, then wrench-tighten one to two turns. Fittings meet ASTM D1710 specifications and testing requirements for material quality.
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 technical drawings and 3-D models, click on a part number.
- For Use With: Deionized Water, Hydrochloric Acid, Solvents
- Temperature Range: -70° to 400° F
- Specifications Met: ASTM D1710
- Pipe Nipples and Pipe: Use Schedule 80 PTFE Plastic
- Flanges: Use Class 150 PTFE Plastic
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through a wall, tank, or panel to create an inlet or outlet for faucets, pipes, and spigots. They are for use on flat and curved surfaces.
| Pipe Size  | For Hole Dia. | For Max. Wall Thick. | Material | Color | Gasket Material | Max. Pressure | Each | |
NPT Threads | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4 | 1 3/16" | 1/2" | PTFE Plastic | White | FEP-Encapsulated Silicone Rubber | 60 psi @ 72° F | 0000000 | 0000000 |
| 3/8 | 1 1/4" | 1/2" | PTFE Plastic | White | FEP-Encapsulated Silicone Rubber | 60 psi @ 72° F | 0000000 | 000000 |
| 1/2 | 1 1/2" | 5/8" | PTFE Plastic | White | FEP-Encapsulated Silicone Rubber | 60 psi @ 72° F | 0000000 | 000000 |
| 3/4 | 1 13/16" | 3/4" | PTFE Plastic | White | FEP-Encapsulated Silicone Rubber | 30 psi @ 72° F | 0000000 | 000000 |
| 1 | 2 1/16" | 3/4" | PTFE Plastic | White | FEP-Encapsulated Silicone Rubber | 30 psi @ 72° F | 0000000 | 000000 |
| 2 | 3 1/8" | 7/8" | PTFE Plastic | White | FEP-Encapsulated Silicone Rubber | 30 psi @ 72° F | 0000000 | 000000 |
| Non-Hardening Thread Sealant (8-oz. Brush-Top Can) | 000000 | Each | 000000 |
Plastic Push-to-Connect Tube Fittings for Chemicals
- For Use With: Inch: Alcohol, Hydrochloric Acid, Nitric Acid, Sodium Carbonate, Sulfuric Acid
Metric: Acetic Acid, Alcohol, Arsenic Acid, Benzoic Acid, Fluoboric Acid, Sodium Carbonate, Sulfuric Acid - Temperature Range: Inch: 0° to 270° F
Metric: 32° to 175° F - Tubing: Use with hard (Durometer 55D-60D) FEP plastic
Also known as instant fittings, these chemical-resistant plastic fittings connect to tubing with a push. An internal gripping ring holds the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. Use these fittings in low-pressure applications.
PVDF fittings offer excellent chemical resistance, and can be used with hydrochloric acid and nitric acid. They withstand temperatures up to 270° F, higher than other push-to-connect fittings for chemicals. They are produced in a clean room and are bagged individually to prevent dirt and moisture from contaminating the inside. PVDF is also known as Kynar.
For technical drawings and 3-D models, click on a part number.
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 | Material | Color | Release Ring Color | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
| 1/4" | PVDF Plastic | Black | Gray | 300 psi @ 72° F | 7/8" | 1/2" | 0000000 | 00000 |
| 5/16" | PVDF Plastic | Black | Gray | 300 psi @ 72° F | 3/16" | 5/8" | 00000000 | 00000 |
| 3/8" | PVDF Plastic | Black | Gray | 300 psi @ 72° F | 1" | 5/8" | 0000000 | 00000 |
| 1/2" | PVDF Plastic | Black | Gray | 300 psi @ 72° F | 1 1/8" | 45/64" | 0000000 | 00000 |
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 (A) | For Tube OD (B) | Material | Color | Release Ring Color | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
| 3/8" | 1/4" | PVDF Plastic | Black | Black | 300 psi @ 72° F | 1" | 5/8" | 00000000 | 000000 |
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. PTFE fittings are highly resistant to most acids, alcohols, detergents, and solvents. They’re made by machining. Their nut is made of PVDF, which is resistant to halogens such as chlorine and bromine, strong acids such as hydrofluoric and nitric acids, and organic solvents.
For technical drawings and 3-D models, click on a part number.
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 |
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 | Material | Color | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
| 1/8" | PFA Plastic | White | 125 psi @ 72° F | 5/16" | 1/4" | 000000000 | 0000000 |
| 1/4" | PFA Plastic | White | 125 psi @ 72° F | 1/2" | 1/4" | 000000000 | 000000 |
| 3/8" | PFA Plastic | White | 125 psi @ 72° F | 5/8" | 1/4" | 000000000 | 000000 |
| 1/2" | PFA Plastic | White | 125 psi @ 72° F | 3/4" | 1/4" | 000000000 | 000000 |
| 3/4" | PFA Plastic | White | 125 psi @ 72° F | 1" | 1/4" | 000000000 | 000000 |
| 4mm | PTFE Plastic | White | 100 psi @ 72° F | 25/64" | 1/4" | 000000000 | 000000 |
| 6mm | PTFE Plastic | White | 100 psi @ 72° F | 29/64" | 1/4" | 000000000 | 000000 |
| 12mm | PTFE Plastic | White | 80 psi @ 72° F | 57/64" | 1/4" | 000000000 | 000000 |
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 | Material | Color | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
| 1/4" | PFA Plastic | White | 125 psi @ 72° F | 1/2" | 1/4" | 000000000 | 0000000 |
