Polybutylene Plastic Tube End Caps

Filter by

System of Measurement

Tube Stem OD

Color

Fitting Type

Shape

For Use With

Fitting Connection

Push-to-Connect Tube Stem

Maximum Pressure @ Temperature

140 psi @ 72° F

150 psi @ 72° F

Gender

Male

Maximum Vacuum @ Temperature

28 in. Hg @ 72° F

29 in. Hg @ 72° F

Clarity

Opaque

Export Control Classification Number (ECCN)

RoHS

Length

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Minimum Temperature

Greater than 0° F

Relative Vacuum Rating

Maximum Temperature

REACH

DFARS Specialty Metals

Exempt

Forward

How can we improve?

32 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.

Push-to-Connect Tube Fittings for Air

Temperature Range: 0° to 170° F, except polybutylene plastic fittings are 32° to 140° F
Tubing: Use with firm (Durometer 95A-45D) polyethylene plastic or polyurethane rubber
Specifications Met: ISO 14743, except cartridges and polybutylene plastic fittings

Insert tubing into these fittings and an internal gripping ring and O-ring hold the tubing tight. They are also known as instant fittings. To disconnect, push on the release ring and pull the tubing out of the fitting. Fittings have good corrosion resistance. Use them in low-pressure applications.

Identification rings (sold separately) snap over the release ring so you can color-code your lines.

Clips (sold separately) align and organize your tubing and fittings.

Plugs

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

Polybutylene Plastic
Tube Stem OD	Material	Color	Max. Pressure		Each
5/32"	Polybutylene Plastic	Black	150 psi @ 72° F	51495K171	00000
3/16"	Polybutylene Plastic	Black	150 psi @ 72° F	51495K172	0000
1/4"	Polybutylene Plastic	Black	150 psi @ 72° F	51495K173	0000
5/16"	Polybutylene Plastic	Black	150 psi @ 72° F	51495K174	0000
3/8"	Polybutylene Plastic	Black	150 psi @ 72° F	51495K175	0000
1/2"	Polybutylene Plastic	Black	150 psi @ 72° F	51495K176	0000
4mm	Polybutylene Plastic	Black	150 psi @ 72° F	51615K191	0000
6mm	Polybutylene Plastic	Black	150 psi @ 72° F	51615K193	0000
8mm	Polybutylene Plastic	Black	150 psi @ 72° F	51615K194	0000
10mm	Polybutylene Plastic	Black	150 psi @ 72° F	51615K195	0000
12mm	Polybutylene Plastic	Black	150 psi @ 72° F	51615K196	0000

Weld-Spatter-Resistant Push-to-Connect Tube Fittings for Air and Water

Temperature Range: 32° to 100° F
Tubing: Use with firm or hard (Durometer 90A-50D) nylon plastic or polyurethane rubber

Made of flame-resistant material, these fittings are good for welding and other applications where sparks occur. 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. They have good corrosion resistance.

Plugs

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

Tube Stem OD	Material	Color	Max. Pressure		Each
1/4"	Polybutylene Plastic	Green	140 psi @ 72° F	5486K151	00000
3/8"	Polybutylene Plastic	Green	140 psi @ 72° F	5486K154	0000
1/2"	Polybutylene Plastic	Green	140 psi @ 72° F	5486K155	0000
6mm	Polybutylene Plastic	Green	140 psi @ 72° F	5486K501	0000
8mm	Polybutylene Plastic	Green	140 psi @ 72° F	5486K502	0000
10mm	Polybutylene Plastic	Green	140 psi @ 72° F	5486K503	0000
12mm	Polybutylene Plastic	Green	140 psi @ 72° F	5486K504	0000

Moisture-Resistant Push-to-Connect Tube Fittings for Air and Water

These fittings won’t absorb moisture, so they’re good for water and high-humidity air applications. 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. They have good corrosion resistance.

Plugs

For Use With: Air, Lubricated Air, Water
Temperature Range: 32° to 100° F

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

Tube Stem OD	Material	Color	Max. Pressure		Each
1/8"	Polybutylene Plastic	Orange	140 psi @ 72° F	5111K501	00000
5/32"	Polybutylene Plastic	Orange	140 psi @ 72° F	5111K502	000
3/16"	Polybutylene Plastic	Orange	140 psi @ 72° F	5111K503	000
1/4"	Polybutylene Plastic	Orange	140 psi @ 72° F	5111K504	000
5/16"	Polybutylene Plastic	Orange	140 psi @ 72° F	5111K505	0000
3/8"	Polybutylene Plastic	Orange	140 psi @ 72° F	5111K506	0000
1/2"	Polybutylene Plastic	Orange	140 psi @ 72° F	5111K507	0000
3.2mm	Polybutylene Plastic	Blue	140 psi @ 72° F	51115K691	000
4mm	Polybutylene Plastic	Blue	140 psi @ 72° F	51115K602	000
6mm	Polybutylene Plastic	Blue	140 psi @ 72° F	51115K604	000
8mm	Polybutylene Plastic	Blue	140 psi @ 72° F	51115K605	0000
10mm	Polybutylene Plastic	Blue	140 psi @ 72° F	51115K606	0000
12mm	Polybutylene Plastic	Blue	140 psi @ 72° F	51115K607	0000
16mm	Polybutylene Plastic	Blue	140 psi @ 72° F	51115K608	0000