Need installation or engineering help?
Ask a question
Frequently Asked Questions
What is an ARO U-Cup packing seal used for?
An ARO U-Cup packing seal, part Y186-50, is used in pneumatic and hydraulic cylinders to prevent fluid leakage around reciprocating rods. It provides reliable sealing in industrial pumps, actuators, and valves across machining, material handling, and other plant equipment.
What are the specifications of the ARO Y186-50 U-Cup?
The ARO Y186-50 is a U-Cup type packing seal. Its manufacturer part number is Y186-50. This seal is designed for rod sealing applications in fluid power systems. For exact dimensions and material composition, consult the ARO technical datasheet.
Where to buy ARO Y186-50 U-Cup seals worldwide?
3G Electric supplies the ARO Y186-50 U-Cup seal to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact our team for a quote and lead time on this genuine ARO part.
How to install an ARO U-Cup packing seal?
To install an ARO U-Cup seal, ensure the gland and rod are clean and free of burrs. Lubricate the seal with compatible hydraulic oil. Use a seal installation tool to avoid twisting or cutting the lip. Press the U-Cup evenly into the groove until seated.
Used in
Common applications for AROARO Products
3G Electric supplies ARO seals & packing. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.




