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O-Ring Face Seal Fittings for Stainless Steel Tubing
(SAE Straight) Male
Threads with Gasket
- For Use With: Air, Hydraulic Fluid, Water
- Temperature Range: -30° to 250° F
- Tubing: Use with welded or seamless 316 stainless steel
- Specifications Met: SAE J1453; flared fittings also meet SAE J514
A tube adapter sits flush against the flat face of the fitting so you can slide the tubing and fitting sideways to disconnect in cramped spaces. Fittings are also known as zero-clearance fittings. To install, weld a tube adapter to the tubing with a brazing ring, then mate the tube adapter to the fitting and screw on the nut. As the nut is tightened, the tube adapter compresses the O-ring, creating a strong seal. Fittings are 316 stainless steel for excellent corrosion resistance. Nuts, tube adapters, and brazing rings are sold separately.
NPTF (Dryseal) threads are compatible with NPT threads.
UN/UNF (SAE Straight) threads are also known as O-ring boss threads. Male threads with a gasket provide extra protection against leaks.
For technical drawings and 3-D models, click on a part number.
(SAE Straight) Male
Threads with Gasket
| For Tube OD | Pipe Size  | Thread Size | Material | Gasket Material | Max. Pressure | Each | |
NPTF Threads | |||||||
|---|---|---|---|---|---|---|---|
| 1/4" | 1/4 | __ | 316 Stainless Steel | __ | 4,000 psi @ 72° F | 0000000 | 000000 |
| 3/8" | 3/8 | __ | 316 Stainless Steel | __ | 3,300 psi @ 72° F | 0000000 | 00000 |
| 1/2" | 1/2 | __ | 316 Stainless Steel | __ | 2,400 psi @ 72° F | 0000000 | 00000 |
UN/UNF (SAE Straight) Threads | |||||||
| 1/4" | __ | 7/16"-20 | 316 Stainless Steel | Buna-N Rubber | 4,000 psi @ 72° F | 00000000 | 00000 |
| 3/8" | __ | 9/16"-18 | 316 Stainless Steel | Buna-N Rubber | 3,300 psi @ 72° F | 00000000 | 00000 |
| 1/2" | __ | 3/4"-16 | 316 Stainless Steel | Buna-N Rubber | 2,400 psi @ 72° F | 00000000 | 00000 |
(SAE Straight) Male
Threads with Gasket
Fittings that swivel until tightened rotate 360° for easy installation.
Female fittings mate with another O-ring face seal fitting without the need for a nut or a tube adapter.
| For Tube OD | Pipe Size | Thread Size | Material | Max. Pressure | Each | |
NPTF Threads | ||||||
|---|---|---|---|---|---|---|
| 1/4" | 1/4 | __ | 316 Stainless Steel | 4,000 psi @ 72° F | 00000000 | 0000000 |
| 3/8" | 3/8 | __ | 316 Stainless Steel | 3,300 psi @ 72° F | 00000000 | 000000 |
| 1/2" | 1/2 | __ | 316 Stainless Steel | 2,400 psi @ 72° F | 00000000 | 000000 |
UN/UNF (SAE Straight) Threads | ||||||
| 1/4" | __ | 7/16"-20 | 316 Stainless Steel | 4,000 psi @ 72° F | 00000000 | 000000 |
| 3/8" | __ | 9/16"-18 | 316 Stainless Steel | 3,300 psi @ 72° F | 00000000 | 000000 |
| 1/2" | __ | 3/4"-16 | 316 Stainless Steel | 2,400 psi @ 72° F | 00000000 | 000000 |
(SAE Straight) Male
Threads with Gasket
Fittings that swivel until tightened rotate 360° for easy installation.
Female fittings mate with another O-ring face seal fitting without the need for a nut or a tube adapter.
| For Tube OD | Pipe Size | Thread Size | Material | Max. Pressure | Each | |
NPTF Threads | ||||||
|---|---|---|---|---|---|---|
| 1/4" | 1/4 | __ | 316 Stainless Steel | 4,000 psi @ 72° F | 00000000 | 0000000 |
| 3/8" | 1/4 | __ | 316 Stainless Steel | 3,300 psi @ 72° F | 00000000 | 000000 |
| 1/2" | 1/4 | __ | 316 Stainless Steel | 2,400 psi @ 72° F | 00000000 | 000000 |
UN/UNF (SAE Straight) Threads | ||||||
| 1/4" | __ | 7/16"-20 | 316 Stainless Steel | 4,000 psi @ 72° F | 00000000 | 000000 |
| 3/8" | __ | 7/16"-20 | 316 Stainless Steel | 3,300 psi @ 72° F | 00000000 | 000000 |
| 1/2" | __ | 7/16"-20 | 316 Stainless Steel | 2,400 psi @ 72° F | 00000000 | 000000 |
O-Ring Face Seal Tube Adapters for Stainless Steel Tubing
- For Use With: Air, Hydraulic Fluid, Water
- Temperature Range: -30° to 250° F
- Tubing: Use with seamless or welded 316 stainless steel
- Specifications Met: SAE J1453
Tube adapters sit flush against the flat face of an O-ring face seal fitting so you can slide the tubing and fitting sideways to disconnect in cramped spaces. To install, weld a tube adapter to the tubing with a brazing ring, then mate the tube adapter to an O-ring face seal fitting and screw on the nut. Tube adapters are 316 stainless steel for excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
O-Ring Face Seal Fittings for Steel Tubing
(SAE Straight) Male
Threads with Gasket
- For Use With: Air, Hydraulic Fluid
- Temperature Range: -30° to 250° F, except BSPP fittings are -20° to 230° F
- Tubing: Use with seamless steel
- Specifications Met: SAE J1453
A tube adapter sits flush against the flat face of the fitting so you can slide the tubing and fitting sideways to disconnect in cramped spaces. Fittings are also known as zero-clearance fittings. To install, weld a tube adapter to the tubing with a brazing ring (sold separately), then mate the tube adapter to the fitting and screw on the nut. As the nut is tightened, the tube adapter compresses the O-ring, creating a strong seal. Fittings are zinc-plated steel for fair corrosion resistance. Nuts and tube adapters are sold separately.
NPTF (Dryseal) threads are compatible with NPT threads. BSPP and UN/UNF (SAE Straight) male threads have a gasket to prevent leaks. UN/UNF (SAE Straight) threads are also known as O-ring boss threads.
For technical drawings and 3-D models, click on a part number.
(SAE Straight) Male
Threads with Gasket
| For Tube OD | Pipe Size | Thread Size | Material | Gasket Material | Max. Pressure | Each | |
BSPP Threads | |||||||
|---|---|---|---|---|---|---|---|
| 1/4" | 1/4 | __ | Zinc-Plated Steel | Buna-N Rubber | 6,000 psi @ 72° F | 0000000 | 00000 |
| 3/8" | 1/4 | __ | Zinc-Plated Steel | Buna-N Rubber | 6,000 psi @ 72° F | 0000000 | 0000 |
| 3/8" | 3/8 | __ | Zinc-Plated Steel | Buna-N Rubber | 5,000 psi @ 72° F | 0000000 | 0000 |
NPTF Threads | |||||||
| 1/4" | 1/4 | __ | Zinc-Plated Steel | __ | 6,000 psi @ 72° F | 0000000 | 0000 |
| 3/8" | 3/8 | __ | Zinc-Plated Steel | __ | 6,000 psi @ 72° F | 0000000 | 0000 |
| 1/2" | 1/2 | __ | Zinc-Plated Steel | __ | 6,000 psi @ 72° F | 0000000 | 00000 |
UN/UNF (SAE Straight) Threads | |||||||
| 1/4" | __ | 7/16"-20 | Zinc-Plated Steel | Buna-N Rubber | 6,000 psi @ 72° F | 0000000 | 0000 |
| 3/8" | __ | 9/16"-18 | Zinc-Plated Steel | Buna-N Rubber | 6,000 psi @ 72° F | 00000000 | 0000 |
| 1/2" | __ | 3/4"-16 | Zinc-Plated Steel | Buna-N Rubber | 6,000 psi @ 72° F | 00000000 | 0000 |
(SAE Straight) Male
Threads with Gasket
Fittings that swivel until tightened rotate 360° for easy installation.
| For Tube OD | Pipe Size | Thread Size | Material | Gasket Material | Max. Pressure | Each | |
NPT, NPTF Threads | |||||||
|---|---|---|---|---|---|---|---|
| 1/4" | 1/4 | __ | Zinc-Plated Steel | __ | 6,000 psi @ 72° F | 0000000 | 000000 |
| 3/8" | 3/8 | __ | Zinc-Plated Steel | __ | 6,000 psi @ 72° F | 00000000 | 00000 |
UN/UNF (SAE Straight) Threads | |||||||
| 1/4" | __ | 7/16"-20 | Zinc-Plated Steel | Buna-N Rubber | 6,000 psi @ 72° F | 0000000 | 00000 |
| 3/8" | __ | 9/16"-18 | Zinc-Plated Steel | Buna-N Rubber | 6,000 psi @ 72° F | 00000000 | 00000 |
| 1/2" | __ | 3/4"-16 | Zinc-Plated Steel | Buna-N Rubber | 6,000 psi @ 72° F | 00000000 | 00000 |
Fittings that swivel until tightened rotate 360° for easy installation.
| For Tube OD | Pipe Size | Thread Size | Material | Max. Pressure | Each | |
NPT, NPTF Threads | ||||||
|---|---|---|---|---|---|---|
| 1/4" | 1/4 | __ | Zinc-Plated Steel | 6,000 psi @ 72° F | 0000000 | 000000 |
| 3/8" | 1/4 | __ | Zinc-Plated Steel | 6,000 psi @ 72° F | 00000000 | 00000 |
| 1/2" | 1/4 | __ | Zinc-Plated Steel | 6,000 psi @ 72° F | 00000000 | 00000 |
UN/UNF (SAE Straight) Threads | ||||||
| 1/4" | __ | 7/16"-20 | Zinc-Plated Steel | 6,000 psi @ 72° F | 0000000 | 00000 |
| 1/2" | __ | 7/16"-20 | Zinc-Plated Steel | 6,000 psi @ 72° F | 00000000 | 00000 |
| Number of Pieces | Includes | Material | Max. Pressure | Each | |
| 62 | Plug for 1/4" OD Tubing (10 each) Plug for 3/8" OD Tubing (10 each) Plug for 1/2" OD Tubing (4 each) Plug for 5/8" OD Tubing (3 each) Plug for 3/4" OD Tubing (2 each) Plug for 1" OD Tubing (2 each) Cap for 1/4" OD Tubing (10 each) Cap for 3/8" OD Tubing (10 each) Cap for 1/2" OD Tubing (4 each) Cap for 5/8" OD Tubing (3 each) Cap for 3/4" OD Tubing (2 each) Cap for 1" OD Tubing (2 each) Metal Box | Zinc-Plated Steel | 6,000 psi @ 72° F | 00000000 | 0000000 |
Nuts for O-Ring Face Seal Fittings for Steel Tubing
- For Use With: Air, Hydraulic Fluid
- Temperature Range: -30° to 250° F
- Tubing: Use with seamless steel
- Specifications Met: SAE J1453
Use these nuts with O-ring face seal fittings and tube adapters to create a tight seal on steel tubing. Nuts are zinc-plated steel for fair corrosion resistance.
For technical drawings and 3-D models, click on a part number.
O-Ring Face Seal Tube Adapters for Steel Tubing
- For Use With: Air, Hydraulic Fluid
- Temperature Range: -30° to 250° F
- Tubing: Use with seamless steel
- Specifications Met: SAE J1453
Tube adapters sit flush against the flat face of an O-ring face seal fitting so you can slide the tubing and fitting sideways to disconnect in cramped spaces. To install, weld a tube adapter to the tubing with a brazing ring, then mate the tube adapter to an O-ring face seal fitting and screw on the nut. Adapters are zinc-plated steel for fair corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Brazing Rings for O-Ring Face Seal Fittings for Steel Tubing
- For Use With: Air, Hydraulic Fluid
- Tubing: Use with seamless steel
- Melting Temperature Range: 1,125° to 1,145° F
- Specifications Met: SAE J1453
Use these brazing rings to weld tubing to an O-ring face seal adapter (sold separately).
For technical drawings and 3-D models, click on a part number.