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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Sleeves for 37° Flared Fittings for Stainless Steel Tubing
- For Use With: Air, Hydraulic Fluid, Isopropyl Alcohol, Natural Gas, Phosphoric Acid, Water
- Temperature Range: -420° to 1,200° F
- Tubing: Use with seamless or welded 304 or 316 stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
- Specifications Met: ISO 8434, SAE J514
Use these sleeves with a nut and fitting to provide a tight metal-to-metal seal on stainless steel tubing that is flared to 37°. Sleeves are 316 stainless steel for excellent corrosion resistance. They are also known as ferrules.
Sleeves for Precision AN 37° Flared Fittings for Stainless Steel Tubing
- For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
- Temperature Range: -320° to 1200° F
- Tubing: Use with seamless 304 or 316 stainless steel
- Specifications Met: See Table
Use these sleeves with precision AN nuts and fittings to provide a tight metal-to-metal seal on stainless steel tubing that is flared to 37°. They are also known as ferrules.
304 stainless steel sleeves have very good corrosion resistance. 316 stainless steel sleeves have excellent corrosion resistance.
Sleeves for 37° Flared Fittings for Copper Tubing
- For Use With: Air, Fuel Oil, Mineral Oil, Water
- Temperature Range: -40° to 400° F
- Tubing: Use with seamless copper
- Specifications Met: MIL-F-18866, SAE J514, ISO 8434
Use these sleeves with a nut and fitting to provide a tight metal-to-metal seal on copper tubing that is flared to 37°. Sleeves are brass for good corrosion resistance. They are also known as ferrules.
Sleeves for Compression Fittings for Steel Tubing
- For Use With: Inch: Air, Hydraulic Fluid, Water
Metric: Hydraulic Fluid - Temperature Range: See table
- Tubing: Inch: Use with welded steel
Metric: Use with seamless steel - Specifications Met: Inch: SAE J514
Metric: ISO 8434, DIN 2353
Use these sleeves with compression nuts and fittings, sometimes called bite fittings, to create a strong seal on steel tubing. They are also known as ferrules.
Zinc-plated steel sleeves have fair corrosion resistance.
Sleeves for 37° Flared Fittings for Steel Tubing
- For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
- Temp. Range: -60° to 400° F
- Tubing: Use with seamless steel
- Specifications Met: SAE J514
Use these sleeves with a nut and fitting to provide a tight metal-to-metal seal on steel tubing that is flared to 37°. Sleeves are zinc-plated steel for fair corrosion resistance. They are also known as ferrules.
Nuts with Built-In Sleeve for Quick-Assembly Brass
Compression Tube Fittings for Air and Water
- Tubing: Use with firm or hard nylon plastic, polyethylene plastic or polypropylene plastic
- Temperature Range: 0° to 150° F
Use these nuts with quick-assembly brass compression fittings to create a seal on plastic tubing. They have a built-in sleeve (ferrule), so the sleeve is positioned correctly for installation. Thread the nut onto the fitting, then insert the tubing and tighten the nut. They have good corrosion resistance.
Sleeves for Quick-Assembly Brass
Compression Tube Fittings for Air and Water
- Temperature Range: 0° to 150° F
- Tubing: Acetal plastic sleeves: Use with (firm or hard) polyethylene plastic or polypropylene plastic
Brass sleeves: Use with (firm or hard) nylon plastic, polyethylene plastic or polypropylene plastic
Use these to replace a damaged sleeve (ferrule) in quick-assembly brass compression nuts.
Acetal sleeves are softer than brass, so they won’t damage your tubing.