How to Identify and Measure Fittings
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Ultra-High-Polish Gasket Fittings for Stainless Steel Tubing
- For Use With: Argon, Helium, Nitrogen
- Temperature Range: -420° to 1000° F
- Tubing: Use with 316/316L stainless steel
- Compatible With: Swagelok® VCR
The 15 Ra finish on the interior of these fittings creates an ultra-smooth surface. Also known as ultra-high-purity fittings, they are packed in a Class 100 clean room to prevent contamination. They are commonly used in semiconductor applications. Fittings use a metal gasket (sold separately), which generates fewer particles than a rubber gasket and creates a strong seal in high-pressure and high-vacuum applications. Fittings are 316 stainless steel for excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Wall Thick. | Lg. | Material | Max. Pressure | Max. Vacuum | Each | |
| 1/2" | 0.049" | 1 1/8" | 316L Stainless Steel | 3,500 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 000000 |
Use a female nut to connect a threaded adapter or a Yor-Lok adapter with a butt-weld adapter.
Nuts for Ultra-High-Polish Gasket Fittings for Stainless Steel Tubing
- For Use With: Argon, Helium, Nitrogen
- Temperature Range: -420° to 1000° F
- Tubing: Use with 316/316L stainless steel
- Compatible With: Swagelok® VCR
Nuts are 316 stainless steel for excellent corrosion resistance.
To connect two butt-weld adapters, use a male nut and a female nut. To connect a threaded adapter or a Yor-Lok adapter with a butt-weld adapter, use a female nut. Nuts and adapters are sold separately.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Nut Material | Max. Pressure | Max. Vacuum | Each | |
Male | |||||
|---|---|---|---|---|---|
| 1/4" | 316L Stainless Steel | 5,100 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
| 1/2" | 316L Stainless Steel | 3,500 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
Female | |||||
| 1/4" | 316L Stainless Steel | 5,100 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 0000 |
| 1/2" | 316L Stainless Steel | 3,500 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
Ultra-High-Polish Gasket Adapters for Stainless Steel Tubing
- For Use With: Argon, Helium, Nitrogen
- Temperature Range: -420° to 1000° F
- Tubing: Use with 316/316L stainless steel
- Compatible With: Swagelok® VCR
The 15 Ra finish on the interior of these adapters provides an ultra-smooth surface. Also known as ultra-high-purity fittings, they are packed in a Class 100 clean room to prevent contamination. They are commonly used in semiconductor applications. Adapters use a metal gasket (sold separately) which generates fewer particles than a rubber gasket and creates a strong seal in high-pressure and high-vacuum applications. Adapters are 316 stainless steel for excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Vibration-Resistant Ultra-High-Polish Gasket Fittings for Stainless Steel Tubing
- For Use With: Carbon Dioxide, Ammonia, Chloride, Fluoride, Fluorine, Germane, Fluorocarbon, Halide, Helium, Hydrogen, Argon, Krypton, Oxygen, Laser Gas, Natural Gas, Neon, Butane, Xenon, Tungsten Hexafluoride, Silane, Sulfur Hexafluoride, Nitrogen
- Temperature Range: -420° to 1000° F, except nickel gaskets are -325° to 600° F
- Tubing: Use with 316/316L stainless steel
- Specifications Met: MIL-STD-810
Use these fittings in applications ranging from semiconductor manufacturing to satellites and rockets. They resist high vibration and vacuum while maintaining high purity. Two anti-torque rings stop the fittings from twisting your tubing or component during installation. This also prevents the fittings from loosening or leaking from high vibration, so they’re safe to use with hazardous gases. All are compatible with Swagelok® VCR fittings.
Also known as ultra-high-purity fittings, these fittings were packed in a Class 100 clean room, so they arrive without contaminants. They're also designed from inside and out to prevent the creation of contaminants. Made of stainless steel, they won’t rust. Their anti-torque rings prevent galling, which extends the life of the seal while limiting particles. A metal gasket, instead of a rubber one, also reduces the potential for particles. And their interior is polished to a 7 Ra finish—the same as a high-quality stainless steel sink—to prevent particles from clinging to the inside.
Choose from fully assembled fittings or build a custom fitting. For a complete fitting, you'll need two anti-torque rings, two adapters, a male and female nut, and a gasket.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Wall Thickness | Lg. | Material | Gasket Material | Max. Pressure | Max. Vacuum | Includes | Each | |
| 1/4" | 0.035" | 1 13/16" | 316/316L Stainless Steel | Nickel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | Two Adapters, Two Anti-Torque Rings, Gasket, Male Nut, Female Nut | 0000000 | 000000 |
| 1/2" | 0.049" | 2 15/16" | 316/316L Stainless Steel | Nickel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | Two Adapters, Two Anti-Torque Rings, Gasket, Male Nut, Female Nut | 0000000 | 000000 |
These adapters are also known as glands.
| For Tube OD | Wall Thick. | Lg. | Material | Max. Pressure | Max. Vacuum | Each | |
| 1/4" | 0.035" | 1 1/8" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 000000 |
| 1/4" | 0.035" | 1 3/4" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
| 1/2" | 0.049" | 1 1/8" | 316/316L Stainless Steel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
| 1/2" | 0.049" | 1 13/16" | 316/316L Stainless Steel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
| For Tube OD | Nut Material | Max. Pressure | Max. Vacuum | Each | |
Male | |||||
|---|---|---|---|---|---|
| 1/4" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
| 1/2" | 316/316L Stainless Steel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
Female | |||||
| 1/4" | 316/316L Stainless Steel | 4,000 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 0000 |
| 1/2" | 316/316L Stainless Steel | 2,800 psi @ 72° F | 10 -11 torr @ 72° F | 0000000 | 00000 |
Nickel gaskets are softer than stainless steel gaskets, so they won’t wear down sealing surfaces as much, and they’re easier to tighten. However, they don’t withstand temperatures as high. They’re reactive to carbon monoxide and ozone, so they shouldn’t be used with those chemicals.
Stainless steel gaskets are a more universal gasket material than nickel gaskets. They’re also stronger and better at handling high temperatures. You can use them with carbon monoxide and ozone. However, they’re harder to tighten than nickel gaskets, and they’ll wear down sealing surfaces more quickly.
