PARKER Compression Fitting Union: 3/4 in OD x 3/4 in OD Size, 6,000 psi Max Op Pressure
The PARKER Compression Fitting Union (MPN 12 HL6-S) is a Swivel-type O-Ring Face Seal Steel Compression Fitting from the Seal-Lok series, sized for 3/4 in OD x 3/4 in OD connections with a maximum operating pressure…
SKU 3G-OTH-470518
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Product Description
The PARKER Compression Fitting Union (MPN 12 HL6-S) is a Swivel-type O-Ring Face Seal Steel Compression Fitting from the Seal-Lok series, sized for 3/4 in OD x 3/4 in OD connections with a maximum operating pressure of 6,000 psi. 3G Electric interprets your demand for this genuine PARKER component, sourcing it across our 14 industrial departments and backing it with specialist expertise in combustion, pumps, and controls.
Frequently Asked Questions
What is the PARKER 12 HL6-S compression fitting union used for?
The PARKER 12 HL6-S is a Swivel-type O-Ring Face Seal Steel Compression Fitting from the Seal-Lok series. It is used to connect two 3/4 in OD tubes in high-pressure hydraulic systems, providing a leak-proof seal up to 6,000 psi in industrial fluid power applications.
What are the specifications of the PARKER 12 HL6-S?
The PARKER 12 HL6-S is a Swivel union from the Seal-Lok series. It has a 3/4 in OD x 3/4 in OD size, a maximum operating pressure of 6,000 psi, and is made of steel with an O-ring face seal. The manufacturer part number is 12 HL6-S.
Where to buy PARKER 12 HL6-S worldwide?
3G Electric supplies the genuine PARKER 12 HL6-S Seal-Lok compression fitting union worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source this component across 14 departments, including specialist expertise in pumps and controls.
How to install a PARKER Seal-Lok compression fitting?
To install a PARKER Seal-Lok fitting like the 12 HL6-S, ensure the O-ring is clean and properly seated. Hand-tighten the nut, then use a wrench to tighten to the manufacturer's recommended torque. Avoid over-tightening to prevent O-ring damage. Always verify the tube end is deburred and square.
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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.









