PARKER Compression Fitting Union: 1/4 in OD x 1/16 in OD Fitting Size
The PARKER Compression Fitting Union (MPN 4RU1-316) is a double-ferrule stainless steel fitting with a Compression x Compression type, sized 1/4 in OD x 1/16 in OD. It is compatible with Parker A-LOK fitting brands.
SKU 3G-OTH-471999
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Product Description
The PARKER Compression Fitting Union (MPN 4RU1-316) is a double-ferrule stainless steel fitting with a Compression x Compression type, sized 1/4 in OD x 1/16 in OD. It is compatible with Parker A-LOK fitting brands.
Frequently Asked Questions
What is a PARKER Compression Fitting Union used for?
A PARKER Compression Fitting Union connects two tubes of different diameters — 1/4 in OD and 1/16 in OD — in instrumentation, hydraulic, or pneumatic systems. Its double-ferrule stainless steel design provides a leak-tight seal under vibration and thermal cycling, common in chemical, oil and gas, and process control applications.
What are the specifications of the PARKER 4RU1-316?
The PARKER 4RU1-316 is a double-ferrule stainless steel union with Compression x Compression ends. Fitting size is 1/4 in OD x 1/16 in OD. It is compatible with Parker A-LOK fitting brands. The manufacturer part number is 4RU1-316.
Where to buy PARKER 4RU1-316 worldwide?
3G Electric supplies the PARKER 4RU1-316 compression fitting union to customers worldwide. As a global industrial sourcing partner, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this double-ferrule stainless steel fitting.
How to install a PARKER double-ferrule compression fitting?
To install a PARKER double-ferrule fitting like the 4RU1-316, slide the nut and ferrules onto the tube, insert the tube fully into the body, then tighten the nut finger-tight. Mark the nut, then tighten an additional 1-1/4 turns for stainless steel tubing. Always follow Parker A-LOK installation guidelines for proper sealing.
Used in
Common applications for PARKERPARKER Products
3G Electric supplies PARKER double-ferrule stainless steel fittings. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









