Graco 188738 U-Cup Packing

Graco 188738 Packing U-Cup – High-Performance Seal

Compatible Machines

• Graco piston pumps
• Diaphragm and fluid control assemblies

The Graco 188738 Packing U-Cup is designed for use in piston and pump assemblies, providing excellent sealing performance and long-lasting durability under pressure.

Key Features

• OEM U-cup design for precise fit
• Prevents leakage under high pressure
• Durable, wear-resistant construction
• Maintains performance in demanding applications

Installation & Usage Tips

• Ensure proper installation orientation.
• Clean housing before inserting U-cup.
• Inspect regularly for wear or hardening.
• Replace with new U-cup during pump maintenance.

Frequently Asked Questions