152509-Style 8.5" Square Seal Ring – Replacement-Compatible for Pool & Spa Filter / Pump Systems

Square Ring Replacement:
The 152509-style 8-1/2" square ring is an aftermarket replacement-compatible sealing gasket used in selected pool and spa filter and pump applications. It is designed to help maintain proper sealing between system components, supporting pressure retention and leak prevention for efficient filtration and water flow performance.

Alternate Part References:
PEN152509Z, 15-2509, PEN152509, 152509, AFP180, 152509Z, 90-423-2008, PAC-051-9315
(Provided for reference and cross-compatibility only.)

Compatibility:
Compatible with selected Triton® C-3 commercial pool and spa filter applications including TR100C and TR140C-style systems. Also suitable for selected Pentair-style waterfall and Challenger®-style high-flow spa pump applications.
Please confirm size, shape, model, and sealing surface before ordering or installing.

Square Design:
The square sealing profile offers a wide, stable sealing surface intended to support effective compression under operational pressure, helping reduce leak potential in high-flow or high-pressure systems.

Features:
● Replacement-compatible square sealing ring
● For selected Triton® C-3 filter applications
● Fits select waterfall and Challenger®-style spa pumps
● Approx. 8-1/2" sealing size

Specification:
● SKU: BF-152-509
● Reference Part Number: 152509 (for compatibility only)
● Type: Square Ring Replacement
● Color: Black

Dimensions:
● Inner Diameter: ~8.72"
● Outer Diameter: ~9.13"
● Thickness: ~0.21"
● Height: ~0.24"

Disclaimer:
This is an aftermarket, non-OEM replacement-compatible product. It is not manufactured, supplied, or endorsed by Pentair® or any related brand. All part numbers, models, and brand names are used strictly for identification and compatibility reference only.