McMaster-Carr

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	Type Type


Cap	Plug

Adapter

	Shape Shape

	Cap/Plug
	Straight

	Connection Style Connection Style

	For Tube OD For Tube OD

1/4"

3/4"

	For Use With For Use With

	Connection Type Connection Type


Tube	Hose

Pipe

	Pipe Size Pipe Size

	Gender Gender


Male	Female

	Maximum Pressure Maximum Pressure

	Coupling Size Coupling Size

1/4

3/4

1 1/2

	Clarity Clarity


Semi-Clear	Opaque

	Color Color

	White
	Clear

	Tube Stem OD Tube Stem OD

1/4"

3/8"

	Cam-and-Groove Component Cam-and-Groove Component


Plug	Socket

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

	For Tube Material For Tube Material

Plastic

Rubber

Stainless Steel

	Maximum Vacuum Maximum Vacuum

28 in. of Hg @ 72° F

Not Rated

	For Tube Hardness Rating For Tube Hardness Rating


Soft	Hard

	For Tube Hardness For Tube Hardness

Durometer 40A-65A

Durometer 50A-65A

Durometer 55D-60D

	Push-to-Connect Type Push-to-Connect Type


Tube Stem	Standard

	For Hose ID For Hose ID

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63 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: Alcohol, Hydrochloric Acid, Nitric Acid, Sodium Carbonate, Sulfuric Acid
Temperature Range: 0° to 270° F
Tubing: Use with hard (Durometer 55D-60D) FEP plastic

Also known as instant fittings, these 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. Fittings are PVDF (also known as Kynar), which offers excellent chemical resistance and can handle higher temperatures than other push-to-connect fittings for chemicals. They are produced in a clean room and are bagged individually to prevent dirt and moisture from contaminating the inside.

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

Caps

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

For Tube OD	Material	Color	Release Ring Color	Max. Pressure		Each
1/4"	PVDF Plastic	White	Gray	300 psi @ 72° F	0000000	00000

Plugs

Plugs insert into the push-to-connect end of a fitting.

Tube Stem OD	Material	Color	Max. Pressure		Each
1/4"	PVDF Plastic	White	300 psi @ 72° F	0000000	00000
3/8"	PVDF Plastic	White	300 psi @ 72° F	0000000	0000

Quick-Turn Couplings for Plastic
and Rubber Tubing—Chemicals

For Use With: Acetic Acid, Bleach, Nitric Acid
Temperature Range: 35° to 150° F
Tubing: Use with soft (Durometer 40A-65A) PVC plastic or silicone rubber, except fittings with male threaded pipe connection and plugs for sockets

Also known as luer lock couplings, these consist of a plug and socket (sold separately) that connect with a half turn. They have a compact body for easy installation in tight spaces. Plug and sockets are open-flow style, so there is no shut-off valve to stop the flow when the coupling is separated. They have a universal connection, so the plugs will connect to any of the sockets, regardless of the pipe or tube size. Made of PVDF (also known as Kynar), they have excellent chemical resistance.

Note: For a complete coupling, order a plug and a socket.

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

Caps for Plugs

Material	Color	Max. Pressure	Pkg. Qty.		Pkg.
PVDF Plastic	Clear	40 psi @ 72° F	10	000000000	00000

Plugs for Sockets

Material	Color	Max. Pressure	Pkg. Qty.		Pkg.
PVDF Plastic	Clear	40 psi @ 72° F	10	000000000	00000

Quick-Clamp Fittings for Dairy

Temperature Range: 0° to 140° F
Tubing: Use with soft (Durometer 50A-65A) silicone rubber
Specifications Met: Made of FDA Listed Materials

Also known as single-use fittings, these are disposable so you don't have to sterilize your line. Join the flanged end of the fittings to any other sanitary stainless steel quick-clamp fitting (sold separately) with a gasket and a clamp for a fast and easy way to access your line. Fittings have a smooth interior to prevent product buildup and contamination. They are PVDF (also known as Kynar), which has excellent strength.

Note: For a complete connection, you’ll need two quick-clamp fittings, a clamp, and a gasket (all sold separately).

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

Caps

For Tube OD	Flange OD	Material	Color	Max. Pressure		Each
3/4"	0.984"	PVDF Plastic	White	80 psi @ 72° F	0000000	000000

Clamps

For Tube OD	For Flange OD	Material	Color	Max. Pressure		Each
1/2", 3/4"	0.984"	Nylon Plastic	White	80 psi @ 72° F	0000000	000000

Gaskets

For Tube OD	For Flange OD	Gasket Material	Gasket Color	Maximum Pressure		Each
3/4"	0.984"	Silicone Rubber	Clear	80 psi @ 72° F	0000000	00000

Plastic Quick-Clamp Sanitary
Fittings for Stainless Steel Tubing

For Use With: Dairy, Water
Temperature Range: -40° to 170° F, except gaskets (see table)
Tubing: Use with welded 304/304L or 316/316L stainless steel that meets ASTM A269 or ASTM A270
Specifications Met: 3-A Certified

Made of PVDF (Kynar), these fittings are lightweight compared to metal quick-clamp fittings. The clamp separates into three pieces and threads over the quick-clamp ends of the fittings to create an access point in a line. Tighten the clamp with a spanner wrench (sold separately) for a secure seal.

Note: To complete a connection, you’ll need two quick-clamp fittings, a clamp, and a gasket (all sold separately).

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

Caps

For Tube OD	Flange OD	Material	Color	Max. Pressure		Each
1"	1.984"	PVDF Plastic	White	120 psi @ 72° F	0000000	000000
2"	2.516"	PVDF Plastic	White	120 psi @ 72° F	0000000	00000

Clamps

For Tube OD	For Flange OD	Material	Color	Max. Pressure		Each
1", 1 1/2"	1.984"	PVDF Plastic	White	120 psi @ 72° F	0000000	000000
2"	2.516"	PVDF Plastic	White	120 psi @ 72° F	0000000	00000

Spanner Wrenches

For Tube OD	For Flange OD		Each
1", 1 1/2"	1.984"	0000000	0000000
2"	2.516"	0000000	000000

Gaskets

Buna-N Rubber
For Tube OD	ID	OD	Thick.	Temp. Range, ° F	Color	Specifications Met		Each
1"	0.900"	1.980"	0.203"	-30° to 200°	Black	3-A Certified	0000000	00000
2"	1.900"	2.520"	0.203"	-30° to 200°	Black	3-A Certified	0000000	000
EPDM Rubber
1"	0.900"	1.980"	0.203"	-20° to 300°	Black	3-A Certified	0000000	0000
2"	1.900"	2.520"	0.203"	-20° to 300°	Black	3-A Certified	0000000	0000
Silicone Rubber
1"	0.900"	1.980"	0.203"	-40° to 450°	Clear	3-A Certified	0000000	0000
2"	1.900"	2.520"	0.203"	-40° to 450°	Clear	3-A Certified	0000000	0000
Fluoroelastomer Rubber
1"	0.900"	1.980"	0.203"	-15° to 400°	Black	3-A Certified, Made from FDA Listed Material	0000000	0000
2"	1.900"	2.520"	0.203"	-15° to 400°	Black	3-A Certified, Made from FDA Listed Material	0000000	0000
PTFE Plastic
1"	0.900"	1.980"	0.203"	-100° to 500°	White	3-A Certified, Made from FDA Listed Material	00000000	0000
2"	1.900"	2.520"	0.203"	-100° to 500°	White	3-A Certified, Made from FDA Listed Material	00000000	0000

Plastic Cam-and-Groove Hose
Couplings for Chemicals and Petroleum

Made of plastic, these couplings are lighter in weight than metal cam-and-groove hose couplings, yet have the chemical resistance to withstand gasoline and other harsh substances. A complete coupling consists of a plug and a socket (both sold separately) that allow you to quickly connect and disconnect medium-to large-diameter hose lines. To connect, insert the plug into the socket and press the levers down. The levers fit snugly into the groove on the plug’s body and force the plug against the gasket to form a tight seal. To disconnect, lift both levers and pull out the plug.

Plugs with male threaded end are also known as F adapters.

Plugs with female threaded end are also known as A adapters.

Plugs with barbed end are also known as E adapters. Insert the barbed end into rubber hose and secure with a clamp.

Sockets with locking levers prevent accidental disconnection. The locking pins engage automatically when the coupling is connected. Press the locking pins simultaneously to disengage.

PVDF plugs and sockets have better corrosion and chemical resistance than nylon plugs and sockets. Use them when your application involves harsh acids and solvents.

Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.

Warning: Relieve all pressure before disconnecting the couplings. Do not use cam-and-groove couplings with compressed air or gas.

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

Straight Plugs, Male Threaded Plug

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

PVDF Plastic
Coupling Size	Plug OD	Pipe Size	Thread Type	Color	Max. Pressure		Each
3/4	1 1/4"	1/2	NPT	White	125 psi @ 72° F	00000000	000000
3/4	1 1/4"	3/4	NPT	White	125 psi @ 72° F	00000000	00000
1	1 7/16"	1	NPT	White	125 psi @ 72° F	00000000	00000
1 1/2	2 1/8"	1 1/4	NPT	White	100 psi @ 72° F	0000000	00000
1 1/2	2 1/8"	1 1/2	NPT	White	100 psi @ 72° F	0000000	00000
2	2 1/2"	2	NPT	White	100 psi @ 72° F	0000000	00000
3	3 5/8"	3	NPT	White	50 psi @ 72° F	0000000	00000

Straight Plugs, Female Threaded Plug

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

PVDF Plastic
Coupling Size	Plug OD	Pipe Size	Thread Type	Color	Max. Pressure		Each
3/4	1 1/4"	1/2	NPT	White	125 psi @ 72° F	00000000	000000
3/4	1 1/4"	3/4	NPT	White	125 psi @ 72° F	00000000	00000
1	1 7/16"	1	NPT	White	125 psi @ 72° F	00000000	00000
1 1/2	2 1/8"	1 1/4	NPT	White	100 psi @ 72° F	0000000	00000
1 1/2	2 1/8"	1 1/2	NPT	White	100 psi @ 72° F	0000000	00000
2	2 1/2"	2	NPT	White	100 psi @ 72° F	0000000	00000
3	3 5/8"	3	NPT	White	50 psi @ 72° F	0000000	00000

Straight Plugs, Barbed Hose

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Attachment Type: Use Worm-Drive Clamps or Band-and-Buckle Clamps
Specifications Met: Fed. Spec. A-A-59326

PVDF Plastic
Coupling Size	Plug OD	For Hose ID	Color	Max. Pressure		Each
3/4	1 1/4"	1/2"	White	125 psi @ 72° F	00000000	000000
3/4	1 1/4"	3/4"	White	125 psi @ 72° F	00000000	00000
1	1 7/16"	1"	White	125 psi @ 72° F	00000000	00000
1 1/2	2 1/8"	1 1/4"	White	100 psi @ 72° F	0000000	00000
1 1/2	2 1/8"	1 1/2"	White	100 psi @ 72° F	0000000	00000
2	2 1/2"	2"	White	100 psi @ 72° F	0000000	00000
3	3 5/8"	3"	White	50 psi @ 72° F	0000000	00000

End Plugs

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

PVDF Plastic
Coupling Size	Plug OD	Color	Max. Pressure		Each
3/4	1 1/4"	White	125 psi @ 72° F	00000000	000000
1	1 7/16"	White	125 psi @ 72° F	00000000	00000
1 1/2	2 1/8"	White	100 psi @ 72° F	0000000	00000
2	2 1/2"	White	100 psi @ 72° F	0000000	00000
3	3 5/8"	White	50 psi @ 72° F	0000000	00000

Caps with Locking Levers

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: See table
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

Caps
			Levers					Replacement Gaskets
Coupling Size	Socket ID	Color	No. of	Material	Max. Pressure		Each	Pkg. Qty.		Pkg.
PVDF Plastic
1 1/2	2 1/8"	White	2	304 Stainless Steel	100 psi @ 72° F	00000000	000000	10	0000000	00000
2	2 1/2"	White	2	304 Stainless Steel	100 psi @ 72° F	00000000	00000	10	0000000	00000
3	3 5/8"	White	2	304 Stainless Steel	50 psi @ 72° F	00000000	00000	10	0000000	00000

Caps

For Use With:
Nylon Plastic: Diesel Fuel, Gasoline, Varnish
PVDF Plastic: Diesel Fuel, Gasoline, Nitric Acid, Phosphoric Acid
Maximum Pressure: 125 psi @ 72° F
Temperature Range:
Nylon Plastic: -30° to 200° F
PVDF Plastic: -20° to 250° F
Specifications Met: Fed. Spec. A-A-59326

Caps
			Levers				Replacement Gaskets
Coupling Size	Socket ID	Color	No. of	Material		Each	Pkg. Qty.		Pkg.
PVDF Plastic
3/4	1 1/4"	White	2	304 Stainless Steel	00000000	000000	10	0000000	00000
1	1 7/16"	White	2	304 Stainless Steel	00000000	00000	10	0000000	0000

Quick-Disconnect Plastic-Shape Hose
Couplings for Food and Beverage

Couplings are made of FDA listed materials, so they’re suitable for food and beverage applications and won’t impart tastes or odors to the product. A complete coupling consists of a plug and a socket (both sold separately) that connect and disconnect quickly. Use them if you need frequent access to a line. All of the quick-disconnect food and beverage plugs are compatible with any of the quick-disconnect food and beverage sockets of the same coupling size, regardless of the pipe size. They are PVDF, which has excellent abrasion and corrosion resistance and withstands the damaging effects of UV light.

Plugs are also known as nipples.

Plugs, Male Threaded Pipe