O-Ring Face Seal Elbows | McMaster-Carr

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	Shape Shape

	90° Elbow

	Connection Style Connection Style	Show

O-Ring Face Seal

	Connection Style Connection Style	Hide

	Pipe Size Pipe Size

1/4

3/8

1/2

	Thread Type Thread Type

NPTF

	Material Material

Stainless Steel

Steel

	Type Type


Connector	Adapter

	System of Measurement System of Measurement

Inch

	For Tube OD For Tube OD

1/4"

3/8"

1/2"

	For Tube Material For Tube Material

Stainless Steel

Steel

	For Use With For Use With

Air

Hydraulic Fluid

Water

	Maximum Pressure Maximum Pressure

	Dash Size Dash Size

	Connection Type Connection Type


Pipe	Tube

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

DFARS Specialty Metals
COTS-Exempt

	Gender Gender

Male

	Specifications Met Specifications Met

SAE

	For Tube Fabrication For Tube Fabrication

Seamless

Welded

	Maximum Vacuum Maximum Vacuum

28 in. of Hg @ 72° F

	Minimum Temperature Minimum Temperature

-49° to 0° F

	O-Ring Material O-Ring Material

Rubber

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

RoHS Compliant

	Vacuum Rating Vacuum Rating

Standard

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

REACH Compliant

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33 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, Hydraulic Fluid, Water
Temperature Range: -30° to 250° F
Tubing: Use with welded or seamless 316 stainless steel
Specifications Met: SAE J1453; flared fittings also meet SAE J514

A tube adapter sits flush against the flat face of the fitting so you can slide the tubing and fitting sideways to disconnect in cramped spaces. Fittings are also known as zero-clearance fittings. To install, weld a tube adapter to the tubing with a brazing ring, then mate the tube adapter to the fitting and screw on the nut. As the nut is tightened, the tube adapter compresses the O-ring, creating a strong seal. Fittings are 316 stainless steel for excellent corrosion resistance. Nuts, tube adapters, and brazing rings are sold separately.

NPTF (Dryseal) threads are compatible with NPT threads.

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

90° Elbow Adapters, Tube × Male Threaded Pipe

NPTF Threads
For Tube OD	Pipe Size	Material	Max. Pressure		Each
1/4"	1/4	316 Stainless Steel	4,000 psi @ 72° F	0000000	000000
3/8"	3/8	316 Stainless Steel	3,300 psi @ 72° F	0000000	00000
1/2"	1/2	316 Stainless Steel	2,400 psi @ 72° F	0000000	00000

90° Elbow Connectors, Tube

For Tube OD	Material	Max. Pressure		Each
1/4"	316 Stainless Steel	4,000 psi @ 72° F	0000000	000000
3/8"	316 Stainless Steel	3,300 psi @ 72° F	0000000	00000
1/2"	316 Stainless Steel	2,400 psi @ 72° F	0000000	00000

Tube Adapters

For Tube OD	Material	Max. Pressure		Each
1/4"	316 Stainless Steel	4,000 psi @ 72° F	0000000	000000
3/8"	316 Stainless Steel	3,300 psi @ 72° F	0000000	00000
1/2"	316 Stainless Steel	2,400 psi @ 72° F	0000000	00000

Brazing Rings

	Material Composition
For Tube OD	Silver	Cadmium	Copper	Zinc	Nickel		Each
1/4"	50%	16%	15%	15%	3%	00000000	00000
3/8"	50%	16%	15%	15%	3%	00000000	0000
1/2"	50%	16%	15%	15%	3%	00000000	0000

Nuts

For Tube OD	Nut Material	Max. Pressure		Each
1/4"	316 Stainless Steel	4,000 psi @ 72° F	0000000	000000
3/8"	316 Stainless Steel	3,300 psi @ 72° F	0000000	00000
1/2"	316 Stainless Steel	2,400 psi @ 72° F	0000000	00000

O-Rings

For Tube OD	O-Ring Material	Pkg. Qty.		Pkg.
1/4"	Buna-N Rubber	5	0000000	000000
3/8"	Buna-N Rubber	5	0000000	00000
1/2"	Buna-N Rubber	5	0000000	00000

O-Ring Face Seal Fittings for Steel Tubing

For Use With: Air, Hydraulic Fluid
Temperature Range: -30° to 250° F, except BSPP fittings are -20° to 230° F
Tubing: Use with seamless steel
Specifications Met: SAE J1453

A tube adapter sits flush against the flat face of the fitting so you can slide the tubing and fitting sideways to disconnect in cramped spaces. Fittings are also known as zero-clearance fittings. To install, weld a tube adapter to the tubing with a brazing ring (sold separately), then mate the tube adapter to the fitting and screw on the nut. As the nut is tightened, the tube adapter compresses the O-ring, creating a strong seal. Fittings are zinc-plated steel for fair corrosion resistance. Nuts and tube adapters are sold separately.

NPTF (Dryseal) threads are compatible with NPT threads.

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

90° Elbow Adapters, O-Ring Face Seal × Male Threaded Pipe

NPTF Threads
For Tube OD	Pipe Size	Material	Max. Pressure		Each
1/4"	1/4	Zinc-Plated Steel	6,000 psi @ 72° F	0000000	000000
3/8"	3/8	Zinc-Plated Steel	6,000 psi @ 72° F	0000000	00000
1/2"	1/2	Zinc-Plated Steel	6,000 psi @ 72° F	0000000	00000

90° Elbow Connectors, O-Ring Face Seal

For Tube OD	Material	Max. Pressure		Each
1/4"	Zinc-Plated Steel	6,000 psi @ 72° F	0000000	000000
3/8"	Zinc-Plated Steel	6,000 psi @ 72° F	0000000	00000
1/2"	Zinc-Plated Steel	6,000 psi @ 72° F	0000000	00000

Brazing Rings

	Material Composition
For Tube OD	Silver	Cadmium	Zinc	Copper		Each
1/4"	45%	24%	16%	15%	0000000	00000
3/8"	45%	24%	16%	15%	00000000	0000
1/2"	45%	24%	16%	15%	00000000	0000

Nuts

For Tube OD	Nut Material	Max. Pressure		Each
1/4"	Zinc-Plated Steel	6,000 psi @ 72° F	0000000	00000
3/8"	Zinc-Plated Steel	6,000 psi @ 72° F	0000000	0000
1/2"	Zinc-Plated Steel	6,000 psi @ 72° F	0000000	0000

Replacement O-Rings

For Tube OD	Max. Pressure	Pkg. Qty.		Pkg.
1/4"	6,000 psi @ 72° F	5	0000000	00000
3/8"	6,000 psi @ 72° F	5	0000000	0000
1/2"	6,000 psi @ 72° F	5	0000000	0000

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How to Identify and Measure Fittings

O-Ring Face Seal Fittings for Stainless Steel Tubing

O-Ring Face Seal Fittings for Steel Tubing