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Cat Pumps 2SF05SEEL Stainless Steel Seacock – 1/2” Full-Flow Marine Valve (OEM Replacement)
High-performance 2SF05SEEL 316 stainless steel triplex plunger pump. 0.5 GPM, 1200 PSI, direct-drive, ceramic plungers—ideal for demanding marine and industrial use.

The 2SF05SEEL is a compact, high-efficiency triplex positive displacement plunger pump engineered for demanding marine, commercial, and industrial applications. Built with 316 stainless steel manifolds and valve assemblies, solid ceramic plungers, and durable NBR seals, this pump delivers exceptional corrosion resistance and long service life in the harshest environments.
Designed as a direct-drive, hollow-shaft pump, the 2SF Series mounts directly to a 56C-face electric motor, offering a streamlined installation with minimal footprint. With its precise reciprocating plunger design, this pump delivers reliable, consistent output at pressures up to 1200 PSI, making it ideal for high-pressure washdown systems, RO/UV filtration, industrial cleaning, and fluid transfer applications.
| 2SF05SEEL Triplex Plunger Pump – Technical Specifications | |
|---|---|
| Model | 2SF05SEEL |
| Pump Type | Triplex (3-plunger) positive displacement reciprocating pump |
| Max Flow | 0.5 GPM (1.9 LPM) |
| Max Pressure | 1200 PSI |
| RPM | 1725 |
| Inlet Port Size | 3/8" NPT(F) |
| Discharge Port Size | 3/8" NPT(F) |
| Drive Type | Direct-drive, bolts to 56C-face motor |
| Manifold Material | 316 Stainless Steel |
| Valve Assembly Material | 316 Stainless Steel |
| Plungers | Solid Ceramic |
| Seals & O-Rings | NBR (Buna-N) |
| Mounting | Hollow shaft for direct motor flange installation |