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PARKER 4 HL6-S Seal-Lok O-Ring Face Seal Steel Compression Fitting Union - O-Ring Face Seal Steel Compression Fittings
PARKERO-Ring Face Seal Steel Compression Fittings

PARKER 4 HL6-S Seal-Lok O-Ring Face Seal Steel Compression Fitting Union

The PARKER Compression Fitting Union (MPN 4 HL6-S) is a 1/4 in OD x 1/4 in OD O-Ring Face Seal Steel Compression Fitting from the Seal-Lok series. This swivel-type union is rated for a maximum operating pressure of…

SKU 3G-OTH-470520

Also listed as: 4HL6S · 4 HL6 S · 4-HL6-S

Brand
PARKER
Item
4 HL6-S Seal-Lok O-Ring Face Seal Steel Compression Fitting Union
Part Number
4 HL6-S
Category
O-Ring Face Seal Steel Compression Fittings
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Technical Specifications

PARKER
Manufacturer Part Number
4 HL6-S
Series
Seal-Lok
Type
Swivel
Max Op Pressure
9,200 psi

Technical Documents

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PARKER Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PARKER Compression Fitting Union (MPN 4 HL6-S) is a 1/4 in OD x 1/4 in OD O-Ring Face Seal Steel Compression Fitting from the Seal-Lok series. This swivel-type union is rated for a maximum operating pressure of 9,200 psi.

Frequently Asked Questions

What is a PARKER 4 HL6-S compression fitting union used for?

The PARKER 4 HL6-S Seal-Lok union connects two 1/4 in OD tubes in high-pressure hydraulic systems. Its O-ring face seal design prevents leaks in applications up to 9,200 psi, common in industrial machinery, mobile equipment, and fluid power circuits.

What are the specifications of the PARKER 4 HL6-S?

The PARKER 4 HL6-S is a swivel-type union from the Seal-Lok series. It fits 1/4 in OD x 1/4 in OD tubing, is made of steel with an O-ring face seal, and has a maximum operating pressure of 9,200 psi. The manufacturer part number is 4 HL6-S.

Where to buy PARKER 4 HL6-S compression fittings worldwide?

3G Electric supplies the PARKER 4 HL6-S Seal-Lok union to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this high-pressure fitting.

How to install a PARKER Seal-Lok swivel union?

Ensure tube ends are clean and deburred. Lubricate the O-ring and nut threads. Tighten the nut to the manufacturer’s recommended torque for 1/4 in OD tubing. The swivel design allows alignment without rotating the tube, reducing installation stress.

Used in

Common applications for PARKER
Industrial hydraulic presses — Parker D1VW directional control valves for precise flow direction
Injection molding machines — Parker solenoid coils and valves for cycle control
Material handling equipment — Parker hydraulic hose fittings and plugs for leak-free connections
High-pressure hydraulic systems — Parker extreme-pressure pipe fittings rated to 6,400 psi
Hydraulic filtration — Parker WPF Series filter elements for 5-micron contamination control
Pneumatic instrumentation — Parker A-Lok compression fittings for tubing connections
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PARKER Products

3G Electric supplies PARKER o-ring face seal steel compression fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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