PARKER Compression Fitting Union: 3/4 in OD x 3/4 in OD Size
The PARKER Compression Fitting Union (MPN 12 HLO-S) is an O-Ring Face Seal Steel Compression Fitting from the Seal-Lok series, sized 3/4 in OD x 3/4 in OD. It is rated for a maximum operating pressure of 6,000 psi.
SKU 3G-OTH-470496
Need installation or engineering help?
Ask a question
Product Description
The PARKER Compression Fitting Union (MPN 12 HLO-S) is an O-Ring Face Seal Steel Compression Fitting from the Seal-Lok series, sized 3/4 in OD x 3/4 in OD. It is rated for a maximum operating pressure of 6,000 psi.
Frequently Asked Questions
What is the PARKER 12 HLO-S compression fitting union used for?
The PARKER 12 HLO-S is an O-Ring Face Seal Steel Compression Fitting Union from the Seal-Lok series. It is used in high-pressure hydraulic systems to connect two 3/4 in OD tubes, providing a leak-free seal rated for up to 6,000 psi in industrial fluid power applications.
What are the specifications of the PARKER Seal-Lok 12 HLO-S?
The PARKER Seal-Lok 12 HLO-S is a steel compression fitting union with 3/4 in OD x 3/4 in OD size. It has a maximum operating pressure of 6,000 psi and uses an O-Ring Face Seal design. The manufacturer part number is 12 HLO-S, part of the Seal-Lok series.
Where to buy PARKER 12 HLO-S compression fitting union worldwide?
3G Electric supplies the PARKER 12 HLO-S compression fitting union worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us to source this Seal-Lok fitting for your hydraulic system needs.
How to install a PARKER Seal-Lok O-Ring Face Seal fitting?
To install a PARKER Seal-Lok fitting like the 12 HLO-S, ensure the O-ring is clean and lubricated. Hand-tighten the union nut, then use a wrench to tighten to the manufacturer's recommended torque. Avoid over-tightening to prevent O-ring damage. Always follow Parker's installation guidelines for leak-free performance.
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.









