PARKER Compression Fitting Union: 1/4 in OD x 1/4 in OD Size, 9,200 psi Max Op Pressure
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
Need installation or engineering help?
Ask a question
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.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
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 PARKERPARKER 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.









