Polyolefin Tube Fittings

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79 Products

About Measuring Fittings

Measure the threaded ends of your fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

Stainless Steel Push-to-Connect Tube Fittings for Air and Water

Temperature Range: -10° to 300° F;
except ISO 14743 fittings: 5° to 390° F;
fittings with 145 psi max. pressure: 25° to 300° F
Tubing: Use with firm or hard (Durometer 95A-72D) nylon plastic or polyurethane rubber;
except ISO 14743 fittings with 250 psi or 435 psi max. pressure: Use with firm (Durometer 85A-100A) nylon plastic or polyurethane rubber;
fittings with 145 psi max. pressure: Use with firm or hard (Durometer 95A-70D) FEP, nylon, PFA, or polyelofin plastic or polyurethane rubber

Made entirely of stainless steel, these fittings have the best corrosion resistance of all our metal push-to-connect fittings. 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.

Standard 90° Elbow Adapters (Intermittent Swivel), Tube × Male Threaded Pipe

Fittings with intermittent swivel rotate 360° before and after installation as needed to allow movement in the system and to prevent kinking.

NPT Threads
For Tube OD	Pipe Size	Material	Max. Pressure		Each
1/2"	1/4	316 Stainless Steel	145 psi @ 72° F	51065K641	000000

Stainless Steel Push-to-Connect Fittings for Food and Beverage

Temperature Range: 0° to 240° F;
except fittings with 145 psi max. pressure: 25° to 300° F
Tubing: Use with nylon, PFA, polyethylene, or TPU plastic;
except fittings with 145 psi max. pressure: Use with FEP, nylon, PFA, or polyethylene plastic or polyurethane rubber
Specifications Met: FDA Compliant 21 CFR 177.1380, ISO 14743;
except fittings with 145 psi max. pressure: FDA Compliant 21 CFR 177.2600, ISO 16030

Create corrosion-resistant connections in food and beverage lines with just a push. Also known as instant fittings, these fittings have an internal gripping ring and an O-ring that hold tight to tubing. To disconnect the fittings, push the release ring and pull the tubing out of the fitting. A smooth exterior with rounded edges prevents buildup of grime and contaminants for effective cleaning. With a 316 stainless steel body, they maintain their strength even when exposed to frequent washdowns and the harshest chemicals, including bleach, chlorine, and phosphoric acid. They’re also more durable than plastic fittings. FDA compliant, these fittings are approved for direct contact with food. Use them with low pressure and with firm or hard tubing only.

90° Elbow Adapters (Swivels Until Tightened), Tube × Male Threaded Pipe

NPT Threads
For Tube OD	Pipe Size	Material	Max. Pressure		Each
1/2"	1/4	316 Stainless Steel	145 psi @ 72° F	7894N381	000000

Luer Lock Tube Couplings for Plastic and Rubber Tubing—High-Purity

For Use With: Air, Water
Temperature Range: Nylon Plastic: -50° to 275° F
Polyolefin Plastic: Up to 355° F
Polypropylene Plastic: -5° to 150° F
Tubing: Use with soft or firm (Durometer 50A-95A) polyolefin plastic, PVC plastic, silicone rubber, TPE plastic, or TPU plastic

To prevent contamination, these couplings are cleaned, double bagged, and packaged in a clean room. This makes them a great choice for applications where cleanliness is critical, such as semiconductor manufacturing. Known for their versatility, they fit any luer lock plug, socket, syringe, or needle. They’re quick to attach and detach, so they’re often used in lines that are frequently disconnected. Thanks to their compact body, they fit in tight spaces. Use them in low-pressure applications.

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

Barbed couplings securely grip tubing and hose.

Nylon couplings have excellent impact and abrasion resistance. Use them in general purpose applications. Polyolefin couplings are BPA-free and autoclavable. Polypropylene couplings resist moisture and chemicals, including solvents. They also stand up to impact and abrasion.

Plugs with a locking ring are more secure than those without a locking ring. Give the ring a half turn to lock them in place. You can’t remove the locking ring.

Plugs without a locking ring are quicker to install and remove than those with a locking ring. Also known as luer slip plugs, all they need is a light push to secure. Add a snap-on ring (sold separately) to lock the coupling in place and color code your line.

Straight Plugs, Barbed Tube

Straight Plug, Barbed Tube with Locking Ring

Straight Plug, Barbed Tube

Nylon Plastic
For Tube ID	Clarity	Max. Pressure	Environmental Rating	Locking Ring Included	Choose a Color	Pkg. Qty.		Pkg.
1/16"	Opaque	150 psi @ 72° F	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N102	00000
1/16"	Opaque	150 psi @ 72° F	ISO Class 7	Without Locking Ring	White	5	7501N142	0000
3/32"	Opaque	150 psi @ 72° F	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N105	0000
3/32"	Opaque	150 psi @ 72° F	ISO Class 7	Without Locking Ring	White	5	7501N145	0000
1/8"	Opaque	150 psi @ 72° F	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N108	0000
1/8"	Opaque	150 psi @ 72° F	ISO Class 7	Without Locking Ring	White	5	7501N148	0000
5/32"	Opaque	150 psi @ 72° F	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N202	0000
5/32"	Opaque	150 psi @ 72° F	ISO Class 7	Without Locking Ring	White	5	7501N152	0000
3/16"	Opaque	150 psi @ 72° F	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N205	0000
3/16"	Opaque	150 psi @ 72° F	ISO Class 7	Without Locking Ring	White	5	7501N155	0000
1/4"	Opaque	150 psi @ 72° F	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N208	0000
1/4"	Opaque	150 psi @ 72° F	ISO Class 7	Without Locking Ring	White	5	7501N158	0000
Polyolefin Plastic
1/16"	Clear	Not Rated	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N101	0000
1/16"	Clear	Not Rated	ISO Class 7	Without Locking Ring	Clear	5	7501N141	0000
3/32"	Clear	Not Rated	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N104	0000
3/32"	Clear	Not Rated	ISO Class 7	Without Locking Ring	Clear	5	7501N144	0000
1/8"	Clear	Not Rated	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N107	0000
1/8"	Clear	Not Rated	ISO Class 7	Without Locking Ring	Clear	5	7501N147	0000
5/32"	Clear	Not Rated	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N201	0000
5/32"	Clear	Not Rated	ISO Class 7	Without Locking Ring	Clear	5	7501N151	0000
3/16"	Clear	Not Rated	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N204	0000
3/16"	Clear	Not Rated	ISO Class 7	Without Locking Ring	Clear	5	7501N154	0000
1/4"	Clear	Not Rated	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N207	0000
1/4"	Clear	Not Rated	ISO Class 7	Without Locking Ring	Clear	5	7501N157	0000
Polypropylene Plastic
1/16"	Semi-Clear	Not Rated	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N103	0000
1/16"	Semi-Clear	Not Rated	ISO Class 7	Without Locking Ring	White	5	7501N143	0000
3/32"	Semi-Clear	Not Rated	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N106	0000
3/32"	Semi-Clear	Not Rated	ISO Class 7	Without Locking Ring	White	5	7501N146	0000
1/8"	Semi-Clear	Not Rated	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N109	0000
1/8"	Semi-Clear	Not Rated	ISO Class 7	Without Locking Ring	White	5	7501N149	0000
5/32"	Semi-Clear	Not Rated	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N203	0000
5/32"	Semi-Clear	Not Rated	ISO Class 7	Without Locking Ring	White	5	7501N153	0000
3/16"	Semi-Clear	Not Rated	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N206	0000
3/16"	Semi-Clear	Not Rated	ISO Class 7	Without Locking Ring	White	5	7501N156	0000
1/4"	Semi-Clear	Not Rated	ISO Class 7	With Locking Ring	Blue, Green, Orange, Pink, Purple, Yellow	5	7501N209	0000
1/4"	Semi-Clear	Not Rated	ISO Class 7	Without Locking Ring	White	5	7501N159	0000

Snap-On Locking Rings for Plugs Without Locking Rings

Nylon Plastic
Clarity	Environmental Rating	Choose a Color	Pkg. Qty.		Pkg.
Opaque	ISO Class 7	Blue, Green, Orange, Pink, Purple, White, Yellow	5	7501N302	00000
Polyolefin Plastic
Clear	ISO Class 7	Blue, Clear, Green, Orange, Pink, Purple, Yellow	5	7501N301	0000
Polypropylene Plastic
Semi-Clear	ISO Class 7	Blue, Green, Orange, Pink, Purple, White, Yellow	5	7501N303	0000

Straight Sockets, Barbed Tube

Nylon Plastic
For Tube ID	Color	Clarity	Max. Pressure	Environmental Rating	Pkg. Qty.		Pkg.
1/16"	White	Opaque	150 psi @ 72° F	ISO Class 7	5	7501N185	00000
3/32"	White	Opaque	150 psi @ 72° F	ISO Class 7	5	7501N188	0000
1/8"	White	Opaque	150 psi @ 72° F	ISO Class 7	5	7501N192	0000
5/32"	White	Opaque	150 psi @ 72° F	ISO Class 7	5	7501N195	0000
3/16"	White	Opaque	150 psi @ 72° F	ISO Class 7	5	7501N198	0000
1/4"	White	Opaque	150 psi @ 72° F	ISO Class 7	5	7501N212	0000
Polyolefin Plastic
1/16"	Clear	Clear	Not Rated	ISO Class 7	5	7501N186	0000
3/32"	Clear	Clear	Not Rated	ISO Class 7	5	7501N189	0000
1/8"	Clear	Clear	Not Rated	ISO Class 7	5	7501N193	0000
5/32"	Clear	Clear	Not Rated	ISO Class 7	5	7501N196	0000
3/16"	Clear	Clear	Not Rated	ISO Class 7	5	7501N199	0000
1/4"	Clear	Clear	Not Rated	ISO Class 7	5	7501N213	0000
Polypropylene Plastic
1/16"	White	Semi-Clear	Not Rated	ISO Class 7	5	7501N184	0000
3/32"	White	Semi-Clear	Not Rated	ISO Class 7	5	7501N187	0000
1/8"	White	Semi-Clear	Not Rated	ISO Class 7	5	7501N191	0000
5/32"	White	Semi-Clear	Not Rated	ISO Class 7	5	7501N194	0000
3/16"	White	Semi-Clear	Not Rated	ISO Class 7	5	7501N197	0000
1/4"	White	Semi-Clear	Not Rated	ISO Class 7	5	7501N211	0000

90° Elbow Sockets, Barbed Tube

Nylon Plastic
For Tube ID	Color	Clarity	Max. Pressure	Environmental Rating	Pkg. Qty.		Pkg.
3/32"	White	Opaque	150 psi @ 72° F	ISO Class 7	5	7501N215	00000
1/8"	White	Opaque	150 psi @ 72° F	ISO Class 7	5	7501N218	0000
Polyolefin Plastic
3/32"	Clear	Clear	Not Rated	ISO Class 7	5	7501N216	0000
1/8"	Clear	Clear	Not Rated	ISO Class 7	5	7501N219	0000
Polypropylene Plastic
3/32"	White	Semi-Clear	Not Rated	ISO Class 7	5	7501N214	0000
1/8"	White	Semi-Clear	Not Rated	ISO Class 7	5	7501N217	0000

Caps for Plugs

Polyolefin Plastic
Color	Clarity	Max. Pressure	Environmental Rating	Pkg. Qty.		Pkg.
Clear	Clear	Not Rated	ISO Class 7	5	7501N223	00000

End Plugs

Polyolefin Plastic
Color	Clarity	Max. Pressure	Environmental Rating	Locking Ring Included	Pkg. Qty.		Pkg.
Open Tip
Clear	Clear	Not Rated	ISO Class 7	With Locking Ring	5	7501N226	00000

Color/Shape-Match Quick-Disconnect Hose Couplings for Air and Water

Couplings are color coded by shape so you can’t mix hose lines. Only plugs and sockets of the same color and coupling size will fit together. 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. Plugs and sockets are 303 stainless steel for good corrosion resistance.

Plugs are also known as nipples.

Sockets have a shut-off valve that stops the flow when the coupling is separated, so air or water won’t leak from the line. They are push-to-connect style. To connect, push the plug into the socket until you hear a click. To disconnect, slide the sleeve on the socket forward until the plug ejects.

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

Plugs, Female Threaded Pipe

Maximum Pressure: 500 psi @ 72° F
Maximum Vacuum: 28 in. of Hg @ 72° F
Temperature Range: 0° to 210° F

	Plug Tip
Coupling Size	Lg.	Dia.	Pipe Size	Thread Type	Band Material	Plug Shape		Each
Blue Band
303 Stainless Steel
1/4	3/16"	7/16"	1/4	NPT	Polyolefin Plastic	Round	8636T234	000000
3/8	7/32"	1/2"	3/8	NPT	Polyolefin Plastic	Round	8636T314	00000
Green Band
303 Stainless Steel
1/4	3/16"	7/16"	1/4	NPT	Polyolefin Plastic	Round	8636T239	00000
3/8	7/32"	1/2"	3/8	NPT	Polyolefin Plastic	Round	8636T312	00000
Red Band
303 Stainless Steel
1/4	3/16"	7/16"	1/4	NPT	Polyolefin Plastic	Round	8636T261	00000
3/8	7/32"	1/2"	3/8	NPT	Polyolefin Plastic	Round	8636T315	00000

Push-to-Connect Sockets, Female Threaded Pipe

Maximum Pressure: 500 psi @ 72° F
Maximum Vacuum: 28 in. of Hg @ 72° F
Temperature Range: 0° to 210° F

	For Plug Tip
Coupling Size	Lg.	Dia.	Pipe Size	Thread Type	Band Material	For Plug Shape		Each
Blue Band
303 Stainless Steel
1/4	3/16"	7/16"	1/4	NPT	Polyolefin Plastic	Round	8636T199	000000
3/8	7/32"	1/2"	3/8	NPT	Polyolefin Plastic	Round	8636T305	00000
Green Band
303 Stainless Steel
1/4	3/16"	7/16"	1/4	NPT	Polyolefin Plastic	Round	8636T198	00000
3/8	7/32"	1/2"	3/8	NPT	Polyolefin Plastic	Round	8636T266	00000
Red Band
303 Stainless Steel
1/4	3/16"	7/16"	1/4	NPT	Polyolefin Plastic	Round	8636T238	00000
3/8	7/32"	1/2"	3/8	NPT	Polyolefin Plastic	Round	8636T311	00000