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KS-Lok Steel Compression Tube Fittings

When your tube run cannot leak, KS-Lok steel compression fittings get it sealed fast. The single-collet swage bites clean and installs simpler than dual-collet styles, rated up to 10,500 psi from -65 °F to 400 °F. We stock unions, elbows, tees, bulkheads, caps, plugs plus nuts and collets, interchangeable with Parker CPI.

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95 results
KS-Lok Male Connectors
KS-Lok Male Connectors
KS-Lok male connectors are steel single-collet swage fittings for joining tube to male pipe. The single collet provides leak-free performance and simplifies installation and interchangeability with Parker CPI® parts. Suitable for petroleum and harsh-condition applications. Made in the U.S.A.
Tube OD: 1/8"

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1/8"
Steel
Male Connector
2
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Tube OD: 1/4"

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1/8"
Steel
Male Connector
2
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1/4"
Steel
Male Connector
2
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3/8"
Steel
Male Connector
2
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1/2"
Steel
Male Connector
2
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Tube OD: 3/8"

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1/8"
Steel
Male Connector
2
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1/4"
Steel
Male Connector
2
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3/8"
Steel
Male Connector
2
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1/2"
Steel
Male Connector
2
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3/4"
Steel
Male Connector
2
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Tube OD: 1/2"

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1/4"
Steel
Male Connector
2
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3/8"
Steel
Male Connector
2
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KS-Lok Female Connectors
KS-Lok Female Connectors
KS-Lok female connectors for steel tubing using a single collet swaging system. Interchangeable with Parker CPI fittings and rated up to 10,500 psi depending on tube type. Temperature range -65 °F to 400 °F. Provides leak-free joints and simplifies installation for industrial use. Made in the U.S.A.
Tube OD: 1/4"

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1/8"
Steel
Female Connector
2
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1/4"
Steel
Female Connector
2
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Tube OD: 3/8"

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1/4"
Steel
Female Connector
2
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3/8"
Steel
Female Connector
2
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1/2"
Steel
Female Connector
2
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Tube OD: 1/2"

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1/4"
Steel
Female Connector
2
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3/8"
Steel
Female Connector
2
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1/2"
Steel
Female Connector
2
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KS-Lok Unions
KS-Lok Unions
KS-Lok unions are steel tube unions using a single collet swaging system that provides leak-free connections and simplifies installation. Interchangeable with Parker CPI® parts. Rated for up to 10,500 psi and temperature service from -65 °F to 400 °F for harsh field and industrial use. Made in the U.S.A.
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1/4"
Steel
Union
2
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3/8"
Steel
Union
2
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1/2"
Steel
Union
2
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3/4"
Steel
Union
2
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1"
Steel
Union
1
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3/8" x 1/4"
Steel
Union
2
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1/2" x 3/8"
Steel
Union
2
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KS-Lok Bulkhead Unions
KS-Lok Bulkhead Unions
KS-Lok bulkhead unions are steel tube fittings with a single collet swaging system that provides leak-free connections and simplifies installation. Interchangeable with Parker CPI and similar fittings. Rated for up to 10,500 psi and -65 °F to 400 °F for harsh conditions. Made in the U.S.A.
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1/4"
Steel
Bulkhead Union
2
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3/8"
Steel
Bulkhead Union
2
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1/2"
Steel
Bulkhead Union
2
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KS-Lok Male Elbows
KS-Lok Male Elbows
KS-Lok male elbows are steel tube fittings with a single collet swaging system that provides leak-free joints and simplifies installation. Interchangeable with Parker CPI and suited for petroleum and industrial fluid systems up to 10,500 psi. Made in the U.S.A.
Tube OD: 1/4"

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1/8"
Steel
Male Elbow
2
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1/4"
Steel
Male Elbow
2
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3/8"
Steel
Male Elbow
2
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1/2"
Steel
Male Elbow
2
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Tube OD: 3/8"

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1/8"
Steel
Male Elbow
2
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1/4"
Steel
Male Elbow
2
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3/8"
Steel
Male Elbow
2
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1/2"
Steel
Male Elbow
2
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Tube OD: 1/2"

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1/4"
Steel
Male Elbow
2
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3/8"
Steel
Male Elbow
2
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1/2"
Steel
Male Elbow
2
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3/4"
Steel
Male Elbow
2
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KS-Lok Female Elbows
KS-Lok Female Elbows
KS-Lok female elbows are steel tube fittings with a single collet swaging system that provides leak-free connections and simplifies installation. Interchangeable with Parker CPI fittings. Rated up to 10,500 psi and usable from -65 °F to 400 °F for industrial and field use. Made in the U.S.A.
Tube OD: 1/4"

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1/8"
Steel
Female Elbow
2
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1/4"
Steel
Female Elbow
2
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1/2"
Steel
Female Elbow
2
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Tube OD: 3/8"

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1/4"
Steel
Female Elbow
2
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3/8"
Steel
Female Elbow
2
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Tube OD: 1/2"

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1/2"
Steel
Female Elbow
2
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KS-Lok Union Elbows
KS-Lok Union Elbows
KS-Lok union elbows are steel swage fittings with a single collet system that provides leak-free joints and simplifies installation. Interchangeable with Parker CPI fittings and rated for up to 10,500 psi. They resist temperatures from -65 °F to 400 °F for harsh environment applications. Made in the U.S.A.
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1/4"
Steel
Union
2
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3/8"
Steel
Union
2
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1/2"
Steel
Union
2
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3/4"
Steel
Union
2
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1"
Steel
Union
1
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KS-Lok Union Tees
KS-Lok Union Tees
KS-Lok union tees are steel tube fittings with a single collet swaging system that provides leak-free connections and simplifies installation. Interchangeable with Parker CPI and similar fittings. Rated up to 10,500 psi and usable from -65 °F to 400 °F for harsh service. Made in the U.S.A.
Tube OD Material Shape Package Qty Item #
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1/4"
Steel
Union
2
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3/8"
Steel
Union
2
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1/2"
Steel
Union
2
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3/4"
Steel
Union
2
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KS-Lok Male Run Tees
KS-Lok Male Run Tees
KS-Lok male run tees made of steel with a single collet swaging system provide leak-free connections and simplify installation. Intermixable with Parker CPI fittings and suited for harsh conditions. Made in the U.S.A.
Tube OD: 1/4"

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1/8"
Steel
Male Run Tee
2
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1/4"
Steel
Male Run Tee
2
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Tube OD: 3/8"

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1/4"
Steel
Male Run Tee
2
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3/8"
Steel
Male Run Tee
2
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Tube OD: 1/2"

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1/2"
Steel
Male Run Tee
2
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KS-Lok Male Branch Tees
KS-Lok Male Branch Tees
KS-Lok male branch tees are steel hydraulic fittings with a single collet swaging system that provides leak-free connections and simplifies installation. Interchangeable with Parker CPI® parts, they handle up to 10,500 psi and resist temperatures from -65 °F to 400 °F for harsh applications. Made in the U.S.A.
Tube OD: 1/4"

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1/8"
Steel
Branch Tee
2
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1/4"
Steel
Branch Tee
2
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Tube OD: 3/8"

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1/4"
Steel
Branch Tee
2
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3/8"
Steel
Branch Tee
1
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Tube OD: 1/2"

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1/2"
Steel
Branch Tee
1
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KS-Lok Plugs
KS-Lok Plugs
KS-Lok plugs are steel swage-fit tube plugs using a single collet system that provides leak-free connections and simplifies installation. Interchangeable with Parker CPI fittings, they resist temperatures from -65 °F to 400 °F and handle pressures up to 10,500 psi, suited for harsh field use. Made in the U.S.A.
Tube OD Material Shape Package Qty Item #
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1/4"
Steel
Plug
2
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3/8"
Steel
Plug
2
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1/2"
Steel
Plug
2
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3/4"
Steel
Plug
2
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1"
Steel
Plug
1
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KS-Lok Collets
KS-Lok Collets
KS-Lok collets are steel single-collet swaging components for tube fittings. The single-collet design provides simpler installation and leak-free performance while interchangeability with Parker CPI fittings helps ease replacement. Suitable for harsh industrial and oilfield use. Made in the U.S.A.
Tube OD Material Shape Package Qty Item #
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1/8"
Steel
Collet
5
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1/4"
Steel
Collet
5
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3/8"
Steel
Collet
5
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1/2"
Steel
Collet
5
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3/4"
Steel
Collet
5
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1"
Steel
Collet
2
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KS-Lok Nuts
KS-Lok Nuts
KS-Lok nuts are steel single collet swaging nuts for tube fittings that simplify installation and provide leak‑free performance. Interchangeable with Parker CPI and similar systems. Rated for high pressure service and wide temperatures which helps reliability in harsh applications. Made in the U.S.A.
Tube OD Material Shape Package Qty Item #
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1/8"
Steel
Nut
5
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1/4"
Steel
Nut
5
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3/8"
Steel
Nut
5
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1/2"
Steel
Nut
5
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3/4"
Steel
Nut
5
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1"
Steel
Nut
2
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KS-Lok Caps
KS-Lok Caps
KS-Lok caps are steel tube end caps using a single collet swaging system that provides leak-free connections and simplifies installation. Interchangeable with Parker CPI and similar fittings. Rated to 10,500 psi depending on tube and usable from -65 °F to 400 °F for harsh environments. Made in the U.S.A.
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1/4"
Steel
Cap
2
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3/8"
Steel
Cap
2
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1/2"
Steel
Cap
2
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3/4"
Steel
Cap
2
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