US Seal Pump Shaft Seal Assembly – ¾″ Shaft | Model PS‑201
The US Seal PS‑201 is a general-service mechanical seal assembly designed for ¾″ pump shafts (0.750″ ID). It's widely used in pool and spa centrifugal pumps, including models from Hayward (Max-Flo, Super Pump, Super 2), Pentair/PacFab Hydropump, Sta‑Rite (Dura-Glas II, Max‑E‑Glas II), Jacuzzi, American Products, and more.
Key Features:
- ¾″ inside diameter (fits 0.750″ shaft)
- Outer diameter: ~1.343″; seal width: ~0.718″
- Materials: Buna elastomer secondary seal, molded plastic primary ring, ceramic mating ring, stainless steel spring/hardware
- Spring-loaded, one-piece elastomer bellows design for flexibility and sealing reliability
Technical Specifications:
- Model / SKU: PS‑201
- Shaft Size: ¾″ (0.750″ ID)
- Outer Diameter: ~1.343″; Height: ~0.718″
- Mating Ring OD: ~1.375″; Thickness: ~0.406″
- Seal Materials: Buna, plastic, ceramic, stainless steel
- Temperature Range: –40 °F to +400 °F
Maintenance Tip: Always use a water-based seal lubricant (such as P‑80) during installation—avoid petroleum or silicone lubricants. Handle carefully to avoid damaging the ceramic ring. Replace the seal during any pump or motor replacement and inspect associated O‑rings and bushings.
SKU: PS-201
