Connection Style Connection Style |
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Yor-Lok |
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Butt Weld |
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Socket Connect |
For Tube Material For Tube Material |
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Compatible With Compatible With |
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For Use With For Use With |
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Maximum Pressure Maximum Pressure |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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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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Yor-Lok Fittings for Stainless Steel Tubing

A nut with two sleeves (ferrules) gives these fittings extra gripping power. The sleeves bite into tubing as you tighten the nut, creating a strong seal. Also known as instrumentation fittings, they are made to tight tolerances for use in high-precision applications. They are compatible with Swagelok®, Let-Lok, and A-Lok fittings.
316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.

- For Use With: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
- Tubing: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
For Tube | |||||||
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OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | Each | |
1/8" | 0.035" | 1/8 | 316 Stainless Steel | 6,000 psi @ 72° F | -420° to 1200° | 0000000 | 000000 |
1/4" | 0.035" | 1/8 | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
1/4" | 0.035" | 1/4 | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
3/8" | 0.035" | 1/4 | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
1/2" | 0.035" | 3/8 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
1/2" | 0.035" | 1/2 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
3/4" | 0.049" | 3/4 | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 0000000 | 00000 |
1" | 0.065" | 1 | 316 Stainless Steel | 1,500 psi @ 72° F | -420° to 1200° | 0000000 | 000000 |

- For Use With: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
- Tubing: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269

For Tube | ||||||
---|---|---|---|---|---|---|
OD | Wall Thick. | Nut Material | Max. Pressure | Temp. Range, °F | Each | |
1/8" | 0.035" | 316 Stainless Steel | 6,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
1/4" | 0.035" | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
3/8" | 0.035" | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
1/2" | 0.035" | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
3/4" | 0.049" | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
1" | 0.065" | 316 Stainless Steel | 1,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |

For Tube | ||||||
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OD | Wall Thick. | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
1/8" | 0.035" | 316 Stainless Steel | 6,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
1/4" | 0.035" | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
3/8" | 0.035" | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
1/2" | 0.035" | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
3/4" | 0.049" | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
1" | 0.065" | 316 Stainless Steel | 1,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |

PTFE sleeves are plastic instead of stainless steel, so they won’t damage tubing.
For Tube OD | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
1/8" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 00000 |
1/4" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 0000 |
3/8" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 0000 |
1/2" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 0000 |
3/4" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 00000 |
1" | PTFE Plastic | Not Rated | -65° to 350° | 00000000 | 00000 |

Tube supports are recommended for soft plastic tubing to prevent the tube from collapsing.
For Tube | |||||
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OD | ID | Tube Support Material | Temp. Range, °F | Each | |
1/4" | 1/8" | 316 Stainless Steel | -420° to 1200° | 00000000 | 00000 |
3/8" | 1/4" | 316 Stainless Steel | -420° to 1200° | 00000000 | 0000 |
1/2" | 1/4" | 316 Stainless Steel | -420° to 1200° | 00000000 | 0000 |
3/4" | 1/2" | 316 Stainless Steel | -420° to 1200° | 00000000 | 00000 |
1" | 3/4" | 316 Stainless Steel | -420° to 1200° | 00000000 | 00000 |