Graco 15D116 Piston Seal – High-Performance Replacement
The Graco 15D116 Piston Seal is a precision-engineered component designed for high-pressure piston pumps, ensuring reliable sealing, smooth fluid flow, and extended pump life even under demanding conditions.
Key Features
- Durable polyurethane construction for superior wear resistance
- Optimized dual-lip design to maintain efficient sealing and reduce friction
- Maintains consistent fluid pressure for high-quality spraying
- Compact, direct replacement for Graco piston-style pumps
- Resistant to high-pressure (>3,000 psi) and temperature variations (–40°F to 250°F)
Technical Specifications
| Manufacturer Part Number | 15D116 |
| Material | Polyurethane elastomer with fabric reinforcement |
| Pressure Rating | > 3,000 psi |
| Temperature Range | –40°F to 250°F |
| Service Life | Over 1 million cycles in validated tests |
Design & Durability
The seal’s dual-lip geometry ensures consistent sealing along the piston bore, minimizing fluid bypass and maximizing pump efficiency. Its reinforced polyurethane resists abrasion and extrusion, providing long-term reliability in industrial coating applications.
Installation & Maintenance
- Inspect the piston bore for scratches or debris before installing the seal
- Apply compatible assembly lubricant to prevent wear during initial operation
- Replace periodically to maintain optimal pump performance
- Use non-metal tools for removal to avoid damaging the seal lip
- Maintain a clean fluid system to prolong seal life
Applications & Compatibility
The 15D116 Piston Seal is suitable for Graco piston-style high-pressure pumps. It is a critical replacement part in repair kits and OEM pump assemblies.
- Used in industrial and commercial airless sprayers
- Compatible with abrasive coatings and high-solid fluids
Frequently Asked Questions
The 15D116 Piston Seal provides a reliable seal inside Graco piston pumps, ensuring consistent fluid flow and preventing leakage.
It is made from polyurethane elastomer with fabric reinforcement, offering excellent abrasion resistance and durability under high-pressure conditions.
Inspect the piston bore, lubricate the seal before installation, replace it periodically, and keep the fluid system clean to extend its service life.
