18mm Tube Fittings | McMaster-Carr

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55 Products

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 1A-95A or Rockwell 15T 1-15T 60) 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.

Use tube supports (sold separately) when attaching fittings to plastic and rubber tubing to prevent the tube from collapsing.

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

Straight Adapters with Center Stop, 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	1/2	Brass	Buna-N Rubber	1000 psi @ 72° F	0° to 175°	00000000	00000
18mm	1mm	3/4	Brass	Buna-N Rubber	1000 psi @ 72° F	0° to 175°	00000000	00000

Tube Supports For Use With Air, Lubricated Air, and Water

Temperature Range: -75° to 550° F
Tubing: Use with hard or firm (Rockwell 15T 1-15T 60) nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber

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

Nuts

Short

For Use With:
Short nuts: Air, Water, Lubricated Air
Long nuts: Air, Water, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil
Temperature Range: See table
Tubing:
Short nuts: Use with firm or hard (Durometer 1A-95A or Rockwell 15T 1-15T 60) nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
Long nuts: Use with firm or hard (Durometer 1A-95A) copper, nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
Specifications Met: See table

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

Sleeves

For Use With:
UL Listed sleeves: Air, Water, Cutting Oil, Fuel Oil, Hydraulic Fluid, Mineral Oil
All other sleeves: Air, Water, Lubricated Air
Temperature Range: See table
Tubing:
UL Listed sleeves: Use with firm or hard (Durometer 1A-95A) copper, nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
All other sleeves: Use with firm or hard (Durometer 1A-95A or Rockwell 15T 1-15T 60) nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
Specifications Met: See table

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

O-Rings

For Use With: Air, Lubricated Air, Water
Temperature Range: -20° to 212° F

For Pipe Size	For Thread Type	For Gender	O-Ring Material	Max. Pressure		Each
3/4	BSPP	Male	Buna-N Rubber, Steel	1000 psi @ 72° F	000000000	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 1A-95A or Rockwell 15T 1-15T 60) 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 Tube
OD	Wall Thick.	Nut 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 Use With Air and Lubricated Air

Temperature Range:
Inch: -65° to 250° F
Metric: -40° 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 1A-95A) polyethylene plastic or polypropylene plastic

For Tube
OD	ID	Tube Support Material	Max. Pressure	Pkg. Qty.		Pkg.
18mm	14mm	Brass	530 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 (Rockwell 15T 1-15T 60) 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

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 1A-95A or-Rockwell 15T 1-15T 60) 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 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.

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 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.

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 Straight) Threads: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil
Metric:
NPT, BSPT, and UN/UNF (SAE Straight) Threads: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
Tubing:
Inch:
NPT and UN/UNF (SAE Straight) 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, BSPT, and UN/UNF (SAE Straight) 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

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 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

Sleeves

Couple 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 Tube			Front Sleeve		Back Sleeve
OD	Wall Thick.	Sleeve Material	Lg.	No. Included	Lg.	No. Included	Max. Pressure		Each
Sleeves
18mm	1.5 to 2.5 mm	316 Stainless Steel	7mm	1	4mm	1	2,900 psi @ 72° F	00000000	000000

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

Sleeves

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®

For Tube			Front Sleeve		Back Sleeve
OD	Wall Thick.	Sleeve Material	Lg.	No. Included	Lg.	No. Included	Max. Pressure		Each
Sleeves
18mm	1.5 to 2.5 mm	316 Stainless Steel	7mm	1	4mm	1	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 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

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. Use them in low- to medium-pressure applications.

316 stainless steel fittings have excellent corrosion resistance.

ISO and DIN fittings meet international dimensional standards.

Straight Adapters, Tube × Male Threaded Pipe

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: See table
Specifications Met:
316 Stainless Steel: ISO 8434, DIN 2353
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: SAE J514

For Tube
OD	Wall Thick.	Pipe Size	Material	Gasket Material	Sleeve Material	Max. Pressure	Temp. Range, °F	For Tube Material	For Tube Specifications Met	For Tube Fabrication		Each
NPT Threads
18mm	1.5-2mm	1/2	316 Stainless Steel	__	316 Stainless Steel	4,500 psi @ 72° F	-75° to 750°	304 Stainless Steel, 316/316L/316Ti Stainless Steel	DIN EN 10216-5, DIN EN 10305-1	Seamless	00000000	000000
18mm	1.5-2mm	3/4	316 Stainless Steel	__	316 Stainless Steel	4,500 psi @ 72° F	-75° to 750°	304 Stainless Steel, 316/316L/316Ti Stainless Steel	DIN EN 10216-5, DIN EN 10305-1	Seamless	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°	304 Stainless Steel, 316/316L/316Ti Stainless Steel	DIN EN 10216-5, DIN EN 10305-1	Seamless	00000000	00000
18mm	1.5-2mm	3/4	316 Stainless Steel	Fluoroelastomer Rubber	316 Stainless Steel	5,800 psi @ 72° F	-10° to 390°	304 Stainless Steel, 316/316L/316Ti Stainless Steel	DIN EN 10216-5, DIN EN 10305-1	Seamless	00000000	00000

Straight Connectors, Tube

For Use With:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: 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:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: -420° to 1200° F
316 Stainless Steel: -75° to 750° F
Tubing:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: Use with welded or seamless 304 or 316 stainless steel that meets ASTM A269
316 Stainless Steel: Use with seamless 304 or 316/316L/316Ti stainless steel that meets DIN EN 10216-5 or DIN EN 10305-1
Specifications Met:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: SAE J514
316 Stainless Steel: ISO 8434, DIN 2353

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

90° Elbow Connectors, Tube

For Use With:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: 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:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: -420° to 1200° F
316 Stainless Steel: -75° to 750° F
Tubing:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: Use with welded or seamless 304 or 316 stainless steel that meets ASTM A269
316 Stainless Steel: Use with seamless 304 or 316/316L/316Ti stainless steel that meets DIN EN 10216-5 or DIN EN 10305-1
Specifications Met:
316 Stainless Steel with 17-4 PH Stainless Steel Sleeve: SAE J514
316 Stainless Steel: ISO 8434, DIN 2353

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

Nuts

For Use With: See table
Temperature Range: See table
Tubing: See table
Specifications Met: See table

For Tube
OD	Wall Thick.	Nut Material	Max. Pressure	For Use With	Temp. Range, °F	For Tube Material	For Tube Specifications Met	For Tube Fabrication	Specifications Met		Each
18mm	1.5-2mm	316 Stainless Steel	5,800 psi @ 72° F	Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water	-75° to 750°	304 Stainless Steel, 316/316L/316Ti Stainless Steel	DIN EN 10216-5, DIN EN 10305-1	Seamless	DIN 2353, ISO 8434-1	0000000	000000

Sleeves

For Use With:
17-4 PH Stainless Steel: Air, Hydraulic Fluid, Water
316 Stainless Steel: Air, Cutting Oil, Ethyl Alcohol, Fuel Oil, Gasoline, Hydraulic Fluid, Isopropyl Alcohol, Mineral Oil, Natural Gas, Steam, Water
Temperature Range:
17-4 PH Stainless Steel: -420° to 1200° F
316 Stainless Steel: -75° to 750° F
Tubing:
17-4 PH Stainless Steel: Use with welded or seamless 304 or 316 stainless steel that meets ASTM A269
316 Stainless Steel: Use with seamless 304 or 316/316L/316Ti stainless steel that meets DIN EN 10216-5 or DIN EN 10305-1
Specifications Met:
17-4 PH Stainless Steel: SAE J514
316 Stainless Steel: ISO 8434-1, DIN 2353

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

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.

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.

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 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

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

Create a strong connection without heating, flaring, or soldering. These fittings have a single sleeve (ferrule or olive) that bites into tubing as you tighten the nut. Both the nut and sleeve are included. Also known as single ferrule fittings, they are easier to install than yor-lok fittings which have two ferrules. They’re often used in low to medium pressure applications, such as plumbing and compressed air systems, which don’t require the strength of a yor-lok fitting. Compression fittings for copper tubing can withstand higher pressures than compression fittings for plastic and rubber tubing. Made of brass, they have good corrosion resistance.

To connect a compression fitting to tube, slide the nut and sleeve onto the tube. Then push the tube into the fitting until it butts against the back of the fitting. Tighten the nut onto the fitting to compress the sleeve.

Threaded connections can be taken apart as needed for maintenance and repair.

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:
Inch: -65° to 200° F
Metric: -40° to 250° F
Tubing:
Inch: Use with firm or hard (Durometer 1A-95A) nylon plastic, polyethylene plastic, polypropylene plastic, polyurethane rubber, or copper
Metric: Use with copper
Specifications Met: UL listed, except for metric fittings

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.

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	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 or EN 1057.

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

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, 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, EN 1057	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.

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	Zinc-Plated 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

Plug and Cap Assortments

Temperature Range: -20° to 230° F

Number of Pieces	Includes	Material	Max. Pressure		Each
72	Plug for 6 mm OD Tubing (4 each) Plug for 8 mm OD Tubing (4 each) Plug for 10 mm OD Tubing (6 each) Plug for 12 mm OD Tubing (6 each) Plug for 15 mm OD Tubing (6 each) Plug for 18 mm OD Tubing (4 each) Plug for 22 mm OD Tubing (4 each) Plug for 28 mm OD Tubing (2 each) Cap for 6 mm OD Tubing (4 each) Cap for 8 mm OD Tubing (4 each) Cap for 10 mm OD Tubing (6 each) Cap for 12 mm OD Tubing (6 each) Cap for 15 mm OD Tubing (6 each) Cap for 18 mm OD Tubing (4 each) Cap for 22 mm OD Tubing (4 each) Cap for 28 mm OD Tubing (2 each) Metal Box	Zinc-Plated Steel	2,300 psi @ 72° F	00000000	0000000

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 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

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. Fittings are zinc-plated steel for fair corrosion resistance. They are compatible with Swagelok®, Let-Lok, and A-Lok fittings.

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

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 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 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 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

Refrigerant Hose Fittings

Maximum Pressure: 500 psi @ 72° F
Maximum Vacuum: 28 in. of Hg @ 72° F
Temperature Range: -40° to 280° F
Compatible With: Danfoss EZ Clip
All Fittings Swivel Until Tightened
Specifications Met: SAE J2064, SAE J3062
Compatible Hose: Refrigerant Hose

No need for expensive crimping tools—these fittings make air conditioning and refrigeration assemblies with clamps. Instead of a crimper, they use two clamps that you tighten against a cage on your fitting with pliers. Both fitting ends swivel until tightened, so you don't have to rotate the entire hose during installation. The cage and clamps stretch out after use, so they shouldn't be used again.

Straight adapter kits include everything you need to connect one end to aluminum tubing. Braze the fitting to your tube with one of the braze rings. To prevent leaks, slip an O-ring on after the brazed joint cools. To connect these fittings to a hose, you’ll need a cage, clamps, and hose clamp pliers.

Straight Adapter Kits, Barbed Hose × Braze-On Female Socket-Connect Tube

	Dash Size
For Hose ID	For Hose	Fitting	For Tube OD, mm	Includes		Each
Aluminum
5/8"	12	12	18	3 Nipple O-Rings, 3 Silver Braze Rings	0000000	000000

Hose Clamp Pliers

		Jaw
Overall Lg.	Grip Style	Opening Style	Texture	Material	Tip Type		Each
Pinch Clamp Pliers—Straight Jaw
6 7/8"	Cushion	Spring Assisted	Smooth	Steel	Fixed	0000000	0000000

Cage and Clamp Kits

		Band
For Hose ID	Dash Size	Wd.	Thick.	Reusable	Includes		Each
304 Stainless Steel Clamps with 301 Stainless Steel Cage
Single Pinch
5/8"	12	5/16"	0.024"	No	2 Clamps, Cage	0000000	00000

Cage and Clamp Assortments with Hose Clamp Pliers and Hose Cutters

			Band
For Hose ID Range	For OD	Dash Size	Wd.	Thick.	Reusable	Number of Pieces	Includes		Each
304 Stainless Steel Clamps with 301 Stainless Steel Cages
Single Pinch
5/16" to 5/8"	0.6" to 0.99"	06, 08, 10, 12	5/16"	0.024"	No	122	Cages with 5/16" band width for 5/16" hose ID (10 each) Clamps with 5/16" band width, .32" clamp ID (20 each) Cages with 5/16" band width for 13/32" hose ID (10 each) Clamps with 5/16" band width, .42" clamp ID (20 each) Cages with 5/16" band width for 1/2" hose ID (10 each) Clamps with 5/16" band width, .52" clamp ID (20 each) Cages with 5/16" band width for 5/8" hose ID (10 each) Clamps with 5/16" band width, .62" clamp ID (20 each) Pinch Clamp Pliers Hose Cutter	0000000	0000000