18mm Tube Fittings | McMaster-Carr

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	System of Measurement System of Measurement

Metric

	For Tube OD For Tube OD	Show

18mm

	For Tube OD For Tube OD	Hide

	Shape Shape


Straight	90° Elbow

Tee	Cap/Plug

	Type Type


Adapter	Cap

Connector	Nut

Reducer	Sleeve

Tube Support

	Connection Style Connection Style

	For Tube Material For Tube Material

	Pipe Size Pipe Size

1/2

3/4

	Thread Type Thread Type

	Connection Type Connection Type


Tube	Pipe

	Material Material

	For Use With For Use With

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

	Maximum Pressure Maximum Pressure

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	Gender Gender

Female

Male

	Maximum Vacuum Maximum Vacuum

28 in. of Hg @ 72° F

29 in. of Hg @ 72° F

Not Rated

	Length Length

	Sleeve Material Sleeve Material

	Nut Material Nut Material

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	For Tube Wall Thickness For Tube Wall Thickness

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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.

For Use With: Air, Lubricated Air, Water
Temperature Range: See table
Tubing: Use with firm or hard (Durometer 95A-Rockwell R110) nylon plastic, polyethylene plastic, polypropylene plastic or polyurethane rubber
Specifications Met: SAE J512, except metric sizes

A single 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. They are brass for good corrosion resistance.

Tube supports (sold separately) are recommended if you want to use the fittings with soft polypropylene and polyethylene tubing to prevent the tube from collapsing.

Install plugs with a nut (sold separately) on the end of fittings to block the flow of air or water.

BSPP male threads have an O-ring to protect against leaks.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

For Tube
OD	Wall Thick.	Pipe Size	Material	O-Ring Material	Max. Pressure	Temp. Range, °F		Each
BSPT Threads
18mm	1mm	1/2	Brass	__	1000 psi @ 72° F	-75° to 550°	00000000	00000
BSPP Threads
18mm	1mm	3/4	Brass	Buna-N Rubber	1000 psi @ 72° F	0° to 175°	00000000	00000
18mm	1mm	1/2	Brass	Buna-N Rubber	1000 psi @ 72° F	0° to 175°	00000000	00000

Tube Supports

For Use With: See table
Temperature Range: See table
Tubing:
Tube supports for use with air and lubricated air: Use with firm or soft (Durometer 70A-45D) polyethylene plastic or polyurethane rubber
Tube supports for use with air, lubricated air, and water: Use with hard or firm (Durometer 95A-Rockwell R110) nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
Specifications Met: SAE J512, except metric sizes

For Tube
OD	ID	For Use With	Tube Support Material	Max Pressure	Temp. Range, °F		Each
18mm	15mm	Air, Lubricated Air, Water	Brass	1000 psi @ 72° F	-75° to 550°	00000000	00000

Nuts

For Use With: Air, Lubricated Air, Water
Temperature Range: See table
Tubing: Use with firm or hard (Durometer 95A-Rockwell R110) nylon plastic, polyethylene plastic, polypropylene plastic or polyurethane rubber
Specifications Met: SAE J512, except metric sizes

For Tube
OD	Wall Thick.	Nut Material	Max. Pressure	Temp. Range, °F		Each
18mm	1mm	Brass	1000 psi @ 72° F	-75° to 550°	00000000	00000

Sleeves

For Use With: Air, Lubricated Air, Water
Temperature Range: See table
Tubing: Use with firm or hard (Durometer 95A-Rockwell R110) nylon plastic, polyethylene plastic, polypropylene plastic or polyurethane rubber
Specifications Met: SAE J512, except metric sizes

For Tube		Sleeve
OD	Wall Thick.	Material	Max. Pressure	Temp. Range, °F		Each
18mm	1mm	Brass	1000 psi @ 72° F	-75° to 550°	00000000	00000

Tube Supports for Brass Compression Tube Fittings for Air and Water

Use these sleeves with brass compression nuts and fittings to create a seal on plastic and rubber tubing. They are brass, so they won’t damage tubing.

For technical drawings and 3-D models, click on a part number.

For Use With Air and Lubricated Air

Temperature Range: -65° to 250° F
Tubing:
Tube supports with 135 psi @ 75° F or 165 psi @ 75° F max. pressures: Use with firm or soft polyethylene plastic or PVC plastic
Tube supports with all other max. pressures: Use with firm or soft (Durometer 70A-45D) polyethylene plastic or polypropylene plastic
Specifications Met: SAE J512, except metric sizes

For Tube
OD	ID	Tube Support Material	Max. Pressure	Pkg. Qty.		Pkg.
18mm	14mm	Brass	200 psi @ 72° F	1	000000000	00000

For Use With Air, Lubricated Air, and Water

Temperature Range: -75° to 550° F
Tubing: Use with hard or firm (Durometer 95A-Rockwell R110) nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber

For Tube, mm
OD	ID	Tube Support Material	Max. Pressure		Each
18	15	Brass	1000 psi @ 72° F	00000000	00000

Nuts for Brass Compression Tube Fittings for Air and Water

For Use With: Air, Lubricated Air, Water
Temperature Range: See table
Tubing: Use with firm or hard (Durometer 95A-Rockwell R110) nylon plastic, polyethylene plastic, polypropylene plastic or polyurethane rubber
Specifications Met: SAE J512, except metric sizes

Use these nuts with brass compression sleeves and fittings to create a seal on plastic and rubber tubing. They are brass for good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

For Tube
OD	Wall Thick.	Nut Material	Max. Pressure	Temp. Range, °F		Each
18mm	1mm	Brass	1000 psi @ 72° F	-75° to 550°	00000000	00000

Sleeves for Brass Compression Tube Fittings for Air and Water

For Use With: Air, Lubricated Air, Water
Temperature Range: See table
Tubing: Use with firm or hard (Durometer 95A-Rockwell R110) nylon plastic, polyethylene plastic, polypropylene plastic or polyurethane rubber
Specifications Met: SAE J512, except metric sizes

Use these sleeves with brass compression nuts and fittings to create a seal on plastic and rubber tubing.

Brass sleeves work best with nylon tubing. When using these sleeves with soft tubing such as polyethylene, polypropylene, and polyurethane tubing, you should use a tube support (not included).

For technical drawings and 3-D models, click on a part number.

For Tube		Sleeve
OD	Wall Thick.	Material	Max. Pressure	Temp. Range, °F		Each
18mm	1mm	Brass	1000 psi @ 72° F	-75° to 550°	00000000	00000

Push-to-Connect Tube Fittings for Drinking Water

BSPP Male Threads
with
Gasket

Temperature Range: 35° to 150° F
Tubing: See table
Specifications Met: NSF/ANSI 61

Made of moisture-resistant acetal, these fittings won't absorb water and lose strength, even in high-humidity environments. Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. All meet NSF/ANSI 61 for use in drinking water systems.

BSPP male threads have a gasket to protect against leaks.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

BSPP Male Threads
with
Gasket

							For Tube
For Tube OD	Pipe Size	Material	Color	Gasket Material	Release Ring Color	Max. Pressure	Material		Each
BSPP Threads
18mm	1/2	Acetal Plastic	Black	Buna-N Rubber	Black	150 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	0000000	00000

Straight Adapters, Tube Stem × Tube

Fittings with tube stem insert into the push-to-connect end of another fitting in place of a length of tubing.

						For Tube
Tube Stem OD	For Tube OD	Material	Color	Release Ring Color	Max. Pressure	Material		Each
22mm	18mm	Acetal Plastic	Black	Black	150 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	00000000	00000

Straight Connectors, Tube

					For Tube
For Tube OD	Material	Color	Release Ring Color	Max. Pressure	Material		Each
18mm	Acetal Plastic	Black	Black	150 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	00000000	00000

90° Elbow Adapters, Tube Stem × Push-to-Connect Tube

Fittings with tube stem insert into the push-to-connect end of another fitting in place of a length of tubing.

						For Tube
Tube Stem OD	For Tube OD	Material	Color	Release Ring Color	Max. Pressure	Material		Each
18mm	18mm	Acetal Plastic	Black	Black	150 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	00000000	00000

90° Elbow Connectors, Tube

					For Tube
For Tube OD	Material	Color	Release Ring Color	Max. Pressure	Material		Each
18mm	Acetal Plastic	Black	Black	150 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	00000000	00000

Tee Connectors, Tube

					For Tube
For Tube OD	Material	Color	Release Ring Color	Max. Pressure	Material		Each
18mm	Acetal Plastic	Black	Black	150 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	00000000	00000

Inline Tee Reducers, Tube

Inline tees are also known as branch tees.

						For Tube
For Tube OD (A)	For Tube OD (B)	Material	Color	Release Ring Color	Max. Pressure	Material		Each
18mm	15mm	Acetal Plastic	Black	Black	150 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	00000000	000000

Caps

Caps fit over a tube stem end of a fitting or a piece of tubing.

					For Tube
For Tube OD	Material	Color	Release Ring Color	Max. Pressure	Material		Each
18mm	Acetal Plastic	Black	Black	150 psi @ 72° F	Nylon Plastic, Polyethylene Plastic	00000000	00000

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.

Straight Adapters, Tube × Male Threaded Pipe

For Use With:
Inch:
NPT and BSPT Threads: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
BSPP Threads: Air, Cutting Oil, Fuel Oil, Gasoline, Mineral Oil, Water
UN/UNF (SAE) Threads: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil
Metric:
NPT, BSPT, and UN/UNF (SAE) Threads: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
Tubing:
Inch:
NPT and UN/UNF (SAE) Threads: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
BSPP and BSPT Threads: Use with seamless 304 or 316 stainless steel that meets ASTM A269
Metric:
NPT and BSPT Threads: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
UN/UNF (SAE) Threads: 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.	Pipe Size	Material	Max. Pressure	Temp. Range, °F		Each
NPT Threads
18mm	1.5mm to 2.5mm	1/2	316 Stainless Steel	2,900 psi @ 72° F	-420° to 1200°	00000000	000000
18mm	1.5mm to 2.5mm	3/4	316 Stainless Steel	2,900 psi @ 72° F	-420° to 1200°	00000000	00000

Straight Adapters, Tube × Female Threaded Pipe

For Use With: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
Tubing:
Inch:
NPT Threads: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
BSPP and BSPT Threads: Use with seamless 304 or 316 stainless steel that meets ASTM A269
Metric:
NPT Threads: 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.	Pipe Size	Material	Max. Pressure	Temp. Range, °F		Each
NPT Threads
18mm	1.5 to 2.5 mm	3/4	316 Stainless Steel	2,900 psi @ 72° F	-420° to 1200°	00000000	000000

Straight Connectors, Tube

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.	Material	Max. Pressure	Temp. Range, °F		Each
18mm	1.5 to 2.5 mm	316 Stainless Steel	2,100 psi @ 72° F	-420° to 1200°	00000000	000000

90° Elbow Connectors, Tube

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.	Material	Max. Pressure	Temp. Range, °F		Each
18mm	1.5 to 2.5 mm	316 Stainless Steel	2,900 psi @ 72° F	-420° to 1200°	00000000	0000000

Nuts

For Tube
OD	Wall Thick.	Nut Material	Max. Pressure	Temp. Range, °F		Each
18mm	1.5 to 2.5 mm	316 Stainless Steel	2,900 psi @ 72° F	-420° to 1200°	00000000	000000

Front and Back Sleeves

For Tube
OD	Wall Thick.	Sleeve Material	Max. Pressure	Temp. Range, °F		Each
18mm	1.5 to 2.5 mm	316 Stainless Steel	2,900 psi @ 72° F	-420° to 1200°	00000000	000000

Front and Back Sleeves for Yor-Lok Fittings for Stainless Steel Tubing

For Use With: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
Temperature Range: -420° to 1200° F
Tubing: Use with seamless or welded 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
Compatible With: Let-Lok, Parker A-Lok, Swagelok®

Use these sleeves with Yor-Lok nuts and fittings to create an extra-strong seal on stainless steel tubing. Sleeves are 316 stainless steel for excellent corrosion resistance. They are also known as ferrules.

For technical drawings and 3-D models, click on a part number.

For Tube
OD	Wall Thick.	Sleeve Material	Max. Pressure		Each
18mm	1.5 to 2.5 mm	316 Stainless Steel	2,900 psi @ 72° F	00000000	000000

Nuts for Yor-Lok Fittings for Stainless Steel Tubing

For Use With: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
Temperature Range: -420° to 1200° F
Tubing: Use with seamless or welded 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
Compatible With: Let-Lok, Parker A-Lok, Swagelok®

Use these nuts with Yor-Lok sleeves and fittings to create an extra-strong seal on stainless steel tubing. They 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.	Nut Material	Max. Pressure		Each
18mm	1.5 to 2.5 mm	316 Stainless Steel	2,900 psi @ 72° F	00000000	000000

Compression Fittings for Stainless Steel Tubing

For Use With:
303 Stainless Steel, 316 Stainless Steel with 17-4 PH Stainless Steel Sleeve, and 360 Brass: Air, Water, Hydraulic Fluid
316 Stainless Steel: Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water
Temperature Range: See table
Tubing:
303 Stainless Steel and 360 Brass: Use with welded or seamless 304 or 316 stainless steel
316 Stainless Steel: Use with seamless 304 or 316/316L/316Ti stainless steel that meets DIN EN 10216-5 or DIN EN 10305-1
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: Use with welded or seamless 304 or 316 stainless steel that meets ASTM A269
Specifications Met:
316 Stainless Steel: ISO 8434, DIN 2353
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: SAE J514

A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless fittings or bite fittings.

316 stainless steel fittings have excellent corrosion resistance.

ISO and DIN fittings meet international dimensional standards.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

For Tube
OD	Wall Thick.	Pipe Size	Material	Gasket Material	Sleeve Material	Max. Pressure	Temp. Range, °F		Each
NPT Threads
18mm	1.5-2mm	1/2	316 Stainless Steel	__	316 Stainless Steel	4,500 psi @ 72° F	-75° to 750°	00000000	000000
18mm	1.5-2mm	3/4	316 Stainless Steel	__	316 Stainless Steel	4,500 psi @ 72° F	-75° to 750°	00000000	00000
BSPP Threads
18mm	1.5-2mm	1/2	316 Stainless Steel	Fluoroelastomer Rubber	316 Stainless Steel	5,800 psi @ 72° F	-10° to 390°	00000000	00000
18mm	1.5-2mm	3/4	316 Stainless Steel	Fluoroelastomer Rubber	316 Stainless Steel	5,800 psi @ 72° F	-10° to 390°	00000000	00000

Straight Connectors, Tube

For Tube
OD	Wall Thick.	Material	Sleeve Material	Max. Pressure	Temp. Range, °F		Each
18mm	1.5-2mm	316 Stainless Steel	316 Stainless Steel	5,800 psi @ 72° F	-75° to 750°	0000000	000000

90° Elbow Connectors, Tube

For Tube
OD	Wall Thick.	Material	Sleeve Material	Max. Pressure	Temp. Range, °F		Each
18mm	1.5-2mm	316 Stainless Steel	316 Stainless Steel	5,800 psi @ 72° F	-75° to 750°	0000000	000000

Nuts

For Tube
OD	Wall Thick.	Nut Material	Max. Pressure	Temp. Range, °F		Each
18mm	1.5-2mm	316 Stainless Steel	5,800 psi @ 72° F	-75° to 750°	0000000	000000

Sleeves

For Tube
OD	Wall Thick.	Sleeve Material	Max. Pressure	Temp. Range, °F		Each
18mm	1.5-2mm	316 Stainless Steel	5,800 psi @ 72° F	-75° to 750°	0000000	00000

Nuts for Compression Fittings for Stainless Steel Tubing

Use these nuts with compression sleeves and fittings to create a strong seal on stainless steel tubing. They are 316 stainless steel for excellent corrosion resistance. These nuts are also known as bite fittings.

ISO and DIN nuts meet international dimensional standards.

For technical drawings and 3-D models, click on a part number.

Metric

For Use With: Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water
Temperature Range: -75° to 750° F
Tubing: Use with seamless 304 or 316/316L/316Ti stainless steel that meets DIN EN 10216-5 or DIN EN 10305-1
Specifications Met: ISO 8434-1, DIN 2353

For Tube
OD, mm	Wall Thick., mm	Nut Material	Max. Pressure		Each
18	1.5-2	316 Stainless Steel	5,800 psi @ 72° F	0000000	000000

Sleeves for Compression Fittings for Stainless Steel Tubing

Use these sleeves with compression nuts and fittings to create a strong seal on stainless steel tubing. Sleeves are stainless steel for excellent corrosion resistance. They are also known as ferrules or rings.

ISO and DIN sleeves meet international dimensional standards.

For technical drawings and 3-D models, click on a part number.

Metric

For Use With: Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water
Temperature Range: -75° to 750° F
Tubing: Use with seamless 304 or 316/316L/316Ti stainless steel that meets DIN EN 10216-5 or DIN EN 10305-1
Specifications Met: ISO 8434-1, DIN 2353

For Tube
OD, mm		Sleeve Material	Max. Pressure		Each
18	1.5-2	316 Stainless Steel	5,800 psi @ 72° F	0000000	00000

Vibration-Resistant Compression Fittings for Stainless Steel Tubing

For Use With: Acetylene, Air, Butane, Compressed Air, Cutting Oil, Diesel Fuel, Fuel Oil, Gasoline, Helium, Hydraulic Fluid (Petroleum Base), Kerosene, Mineral Oil, Natural Gas, Nitrogen, Propane, Soap Solutions
Temperature Range: -10° to 400° F
Tubing: Use with seamless 316Ti or 321 stainless steel
Specifications Met: DIN 3861

Instead of a metal sleeve (ferrule), these fittings have a rubber sleeve that cushions tubing and absorbs vibration to maintain a tight seal, even when connected to large pumps. However, rubber sleeves can’t withstand temperatures as high as metal ones. To create the strong seal, tighten the included nut. These fittings are made of 316 stainless steel, so they have excellent corrosion resistance. They’re also known as flareless fittings. All meet DIN 3861, which is an international standard for compression tube fitting specifications.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

For Tube
OD, mm	Wall Thickness, mm	Pipe Size	Material	Maximum Pressure		Each
NPT Threads
18	2	1/2	316 Stainless Steel	4,500 psi @ 72° F	00000000	0000000

Nuts

Nut

For Tube
OD, mm	Wall Thickness, mm	Nut Material	Maximum Pressure		Each
18	2	316 Stainless Steel	4,500 psi @ 72° F	00000000	000000

Nuts for Vibration-Resistant Compression Fittings for Stainless Steel Tubing

Nut

For Use With: Acetylene, Air, Butane, Diesel Fuel, Compressed Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid (Petroleum Base), Kerosene, Mineral Oil, Natural Gas, Helium, Nitrogen, Propane, Soap Solutions
Temperature Range: -10° to 400° F
Tubing: Use with seamless 316Ti or 321 stainless steel
Specifications Met: DIN 3861

Pair these nuts with vibration-resistant compression sleeves and fittings for a strong seal on stainless steel tubing. Made of 316 stainless steel, they have excellent corrosion resistance. All meet DIN 3861, which is an international standard for compression tube fitting specifications.

For technical drawings and 3-D models, click on a part number.

For Tube
OD, mm	Wall Thickness, mm	Nut Material	Sleeve Material	Maximum Pressure		Each
18	2	316 Stainless Steel	Fluoroelastomer Rubber	4,500 psi @ 72° F	00000000	000000

Solder-Connect Fittings for Copper Tubing

Temperature Range: 32° to 200° F

Solder these fittings to copper tubing or the tube end of another fitting for a permanent, leak-tight connection. They are also known as sweat fittings. Fittings have good corrosion resistance. To adhere to safety standards for drinking water systems, use fittings that meet NSF/ANSI 61, EN 1057, or DVGW GW 8(P).

Copper tube size is the accepted designation of the copper tubing industry, not the actual tube OD.

For technical drawings and 3-D models, click on a part number.

Straight Connectors with Center Stop, Female Socket-Connect Tube

For Use With: Drinking Water
Tubing: See table
Specifications Met: See table

Fittings with center stop have a small internal ridge that prevents the tubing from sliding all the way through the fitting.

Fittings that meet ASTM B379 comply with international standards for tube fitting specifications.

For Tube OD	Material	Max. Pressure	For Copper Tube Type	Specifications Met		Each
18mm	Copper	500 psi @ 72° F	M	ASTM B379, DVGW GW 8 (P), EN 1057	00000000	00000

Short 90° Elbow Connectors, Female Socket-Connect Tube

For Use With: Drinking Water
Tubing: See table
Specifications Met: See table

Fittings that meet ASTM B379 comply with international standards for tube fitting specifications.

For Tube OD	Material	Max. Pressure	For Copper Tube Type	Specifications Met		Each
18mm	Copper	500 psi @ 72° F	M	ASTM B379, DVGW GW 8 (P), EN 1057	00000000	00000

Compression Fittings for Copper Tubing

For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
Temperature Range: See Table
Tubing: Use with copper
Specifications Met: See Table

A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless fittings. They are brass for good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

For Tube
OD	Wall Thick.	Pipe Size	Material	Gasket Material	Max. Pressure	Temp. Range, °F		Each
BSPP Threads
18mm	1mm	1/2	Brass	Polymer Plastic	530 psi @ 72° F	-40° to 250°	00000000	000000
BSPT Threads
18mm	1mm	1/2	Brass	__	530 psi @ 72° F	-40° to 250°	00000000	00000

Sleeves for Compression Fittings for Copper Tubing

For Use With: Air, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil, Water
Temperature Range: -65° to 200° F, except metric fittings are -40° to 250° F
Tubing: Use with copper
Specifications Met: UL listed, except for metric fittings

For technical drawings and 3-D models, click on a part number.

For Tube
OD	Wall Thick.	Sleeve Material	Max. Pressure	Pkg. Qty.		Pkg.
18mm	Not Rated	Brass	Not Rated	1	0000000	00000

Nickel-Plated Brass Compression Fittings for Copper Tubing

For Use With: Air, Cutting Oil, Diesel Fuel, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Lubricants, Mineral Oil, Natural Gas, Steam, Water
Temperature Range: -75° to 550° F, except 90° elbow adapters with BSPP threads are 0° to 170° F
Tubing: Use with copper
Specifications Met: DIN 3861, except nuts meet DIN 3870

With a nickel-plated finish, these compression fittings resist corrosion better than plain brass fittings. They have a single sleeve (ferrule) made of plain brass that gently bites into copper tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. These fittings are also known as flareless fittings. All meet DIN standards for tube fitting dimensions.

For technical drawings and 3-D models, click on a part number.

Straight Adapter, Tube × Male Threaded Pipe

For Tube
OD, mm	Wall Thickness, mm	Pipe Size	Material	Maximum Pressure		Each
BSPT Threads
18	1	1/2	Nickel-Plated Brass	900 psi @ 72° F	00000000	00000

Compression Fittings for Steel Tubing

BSPP and UN/UNF
(SAE Straight) Male
Threads with Gasket

BSPP Male
Threads with
Gasket and Washer

For Use With: Inch: Air, Hydraulic Fluid, Water
Metric: Hydraulic Fluid
Tubing: Inch: Use with welded steel
Metric: Use with seamless steel
Specifications Met: Inch: SAE J514
Metric: ISO 8434, DIN 2353

A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless and bite fittings.

Zinc-plated steel fittings have fair corrosion resistance.

NPTF (Dryseal) threads are compatible with NPT threads. BSPP male threads have either a gasket or a gasket and washer to prevent leaks. ISO 8434 (formerly DIN 2353) fittings meet international standards for tube fitting pressures.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

Temperature Range: See table

For Tube
OD	Wall Thick.	Pipe Size	Material	Max. Pressure	Temp. Range, °F		Each
NPT Threads
18mm	__	1/2	Steel	4,500 psi @ 72° F	-75° to 750°	00000000	000000
NPTF Threads
18mm	Not Rated	1/2	Zinc-Plated Steel	3,600 psi @ 72° F	-20° to 230°	00000000	00000

Straight Adapters (Swivels Until Tightened), Tube × Male Threaded Pipe

BSPP and UN/UNF
(SAE Straight) Male
Threads with Gasket

Temperature Range: -20° to 230° F

Fittings that swivel until tightened rotate 360° for easy installation.

For Tube
OD, mm	Wall Thick.	Pipe Size	Material	Gasket Material	Max. Pressure		Each
BSPP Threads
18	Not Rated	1/2	Zinc-Plated Steel	Buna-N Rubber	3,600 psi @ 72° F	0000000	000000

Straight Connectors, Tube

Temperature Range: See table

For Tube
OD	Wall Thick.	Material	Max. Pressure	Temp. Range, °F		Each
18mm	Not Rated	Zinc-Plated Steel	3,600 psi @ 72° F	-20° to 230°	00000000	000000

90° Elbow Adapters, Tube × Male Threaded Pipe

BSPP Male
Threads with
Gasket and Washer

Temperature Range: See table

For Tube
OD	Wall Thick.	Pipe Size	Material	Gasket Material	Washer Material	Max. Pressure	Temp. Range, °F		Each
BSPP Threads
18mm	Not Rated	1/2	Zinc-Plated Steel	Buna-N Rubber	Steel	3,600 psi @ 72° F	-20° to 230°	0000000	000000

90° Elbow Connectors, Tube

Temperature Range: See table

For Tube
OD	Wall Thick.	Material	Max. Pressure	Temp. Range, °F		Each
18mm	Not Rated	Zinc-Plated Steel	3,600 psi @ 72° F	-20° to 230°	00000000	000000

Tee Connectors, Tube

Temperature Range: -20° to 230° F

For Tube
OD, mm	Wall Thick.	Material	Max. Pressure		Each
18	Not Rated	Zinc-Plated Steel	3,600 psi @ 72° F	00000000	000000

Nuts

Temperature Range: See table

For Tube OD	Nut Material	Max. Pressure	Temp. Range, °F		Each
18mm	Zinc-Plated Steel	3,600 psi @ 72° F	-20° to 230°	00000000	00000

Sleeves

Temperature Range: See table

For Tube OD	Sleeve Material	Max. Pressure	Temp. Range, °F		Each
18mm	Zinc-Plated Steel	3,600 psi @ 72° F	-20° to 230°	00000000	00000

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.

ISO 8434 (formerly DIN 2353) sleeves meet international standards for tube fitting pressures.

For Tube OD	Sleeve Material	Max. Pressure	Temp. Range, °F		Each
18mm	Zinc-Plated Steel	3,600 psi @ 72° F	-20° to 230°	00000000	00000

Nuts 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 nuts with compression sleeves and fittings, also known as bite fittings, to create a strong seal on steel tubing.

Zinc-plated steel nuts have fair corrosion resistance.

ISO 8434 (formerly DIN 2353) nuts meet an international standard for tube fitting pressures.

For technical drawings and 3-D models, click on a part number.

For Tube OD	Nut Material	Max. Pressure	Temp. Range, °F		Each
18mm	Zinc-Plated Steel	3,600 psi @ 72° F	-20° to 230°	00000000	00000

Yor-Lok Fittings for Steel Tubing

For Use With: Air, Cutting Oil, Diesel Fuel, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil
Tubing: Use with seamless steel
Specifications Met: See table

These fittings include a nut with two sleeves (ferrules) for 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. Fittings are zinc-plated steel for fair corrosion resistance. They are compatible with Swagelok®, Let-Lok, and A-Lok fittings.

For technical drawings and 3-D models, click on a part number.

Straight Adapters, Tube × Male Threaded Pipe

For Tube
OD	Wall Thick.	Pipe Size	Material	Max. Pressure	Temp. Range, °F	Specifications Met		Each
NPT Threads
18mm	1.5mm	3/4	Zinc-Plated Steel	2,700 psi @ 72° F	-20° to 800°	ASME B31.3	00000000	000000

Nuts

For Tube
OD	Wall Thick.	Nut Material	Max. Pressure	Temp. Range, °F	Specifications Met		Each
18mm	1.5mm	Zinc-Plated Steel	2,700 psi @ 72° F	-20° to 800°	ASME B31.3	00000000	00000

Front and Back Sleeves

For Tube
OD	Wall Thick.	Front Sleeve Material	Back Sleeve Material	Max. Pressure	Temp. Range, °F	Specifications Met		Each
18mm	1.5mm	Zinc-Plated Steel	316 Stainless Steel	2,700 psi @ 72° F	-20° to 800°	ASME B31.3	00000000	00000

Front and Back Sleeves for Yor-Lok Fittings for Steel Tubing

For Use With: Air, Mineral Oil, Fuel Oil, Gasoline, Diesel Fuel, Cutting Oil, Hydraulic Fluid
Temperature Range: -20° to 800° F
Tubing: Use with seamless steel
Specifications Met: ASME B31.3
Compatible With: Let-Lok, Parker A-Lok, Swagelok®

Use these sleeves with Yor-Lok nuts and fittings to create an extra-strong seal on steel tubing. They are also known as ferrules.

Zinc-plated steel sleeves have fair corrosion resistance. 316 stainless steel sleeves have excellent corrosion resistance.

For technical drawings and 3-D models, click on a part number.

For Tube
OD	Wall Thick.	Front Sleeve Material	Back Sleeve Material	Max. Pressure		Each
18mm	1.5mm	Zinc-Plated Steel	316 Stainless Steel	2,700 psi @ 72° F	00000000	00000

Nuts for Yor-Lok Fittings for Steel Tubing

For Use With: Air, Mineral Oil, Fuel Oil, Gasoline, Diesel Fuel, Cutting Oil, Hydraulic Fluid
Temperature Range: See table
Tubing: Use with seamless steel
Specifications Met: See table
Compatible With: Let-Lok, Parker A-Lok, Swagelok®

Use these nuts with Yor-Lok sleeves and fittings to create an extra-strong seal on steel tubing. They are zinc-plated steel for fair corrosion resistance.

For technical drawings and 3-D models, click on a part number.

For Tube
OD	Wall Thick.	Nut Material	Max. Pressure	Temp. Range, °F	Specifications Met		Each
18mm	1.5mm	Zinc-Plated Steel	2,700 psi @ 72° F	-20° to 800°	ASME B31.3	00000000	00000