Pentair 356795 Seal Plate for EQ Series Commercial Pump
The Pentair 356795 is an OEM replacement seal plate for Pentair EQ Series commercial plastic pool pumps. The seal plate is the wet-end mounting plate that bolts to the motor/bracket assembly and provides the sealing surface and alignment for the mechanical shaft seal, diffuser, and impeller assembly. Replacing a worn, cracked, or warped seal plate helps stop leaks and restores proper wet-end fit and alignment.
Common Applications
- Pentair EQ Series commercial plastic pumps (multiple models across the EQ line)
- Used during wet-end rebuilds when the seal plate is damaged, heat-deformed, or the shaft seal area is worn
Compatible Pump Families (Verify by Model)
- EQW 300–500
- EQWK 300–500
- EQ 500–1000
- EQK 500–1500
Always confirm your exact pump model and parts diagram before ordering, since commercial EQ configurations can vary by horsepower and revision.
What This Part Does
- Provides the mounting interface between the motor and the pump wet end
- Positions and supports the mechanical shaft seal and seal seat
- Helps maintain proper impeller/diffuser alignment for efficient flow and reduced vibration
- Restores leak-free operation when the original seal plate is cracked, warped, or sealing surfaces are damaged
When to Replace
- Visible cracks, melted areas, or warping on the seal plate
- Persistent wet-end leaks even after installing a new shaft seal (and confirming correct installation)
- Seal seat area is pitted, damaged, or no longer holds the seal squarely
- Wet-end rebuild where the seal plate shows wear at the sealing surfaces or bolt bosses
Installation Notes
- Turn off power at the breaker, lock out if required, and relieve system pressure before service.
- Replace the mechanical shaft seal whenever the wet end is opened (recommended best practice).
- Clean all mating surfaces and inspect the diffuser, impeller, and O-rings for wear.
- Tighten fasteners evenly in a cross pattern to avoid distortion and leaks.
- After reassembly, prime the pump and check for leaks around the seal plate seam and shaft seal area.
Related Products (Aqua Pool Supply)
- Pentair EQ Series Seal Set 071725S (Search)
- Pentair EQ Series Diffuser (Search)
- Pentair EQ Series Impeller (Search)
- Pentair EQ Series O-Rings & Gaskets (Search)
Maintenance Tips
- Fix suction leaks and low-water conditions quickly—running dry can overheat and warp wet-end components.
- Keep the pump strainer basket clean to reduce strain on the wet end and help prevent cavitation.
- When rebuilding, replace all disturbed O-rings/gaskets and lubricate only with a pool-safe silicone lubricant.
- If seals fail repeatedly, verify shaft condition, proper motor alignment, and that system valves are not restricting flow.
