Products Description
8-1/2 Inch Square O-Ring Compatible with Pentair Triton Commercial Pool/ Spa Filters
This Square O-Ring is a reliable replacement part for Pentair Triton commercial pool and spa filters. It creates a firm seal between the filter tank and the lid, helping stop leaks and keeping your system running smoothly. A good seal supports better water flow and improves overall filtration performance.
This pool filter O-ring replacement fits a wide range of Pentair systems, making it a practical and straightforward choice for pool owners, technicians, and maintenance teams.
Compatible Models
This filter O-ring is designed to replace Pentair part 152509 / 152509Z and works with:
- Triton TR100C and TR140C
- Waterfall AFP-180
- 5 HP Challenger 345300, 345210 pool/spa filters and pumps
- Pentair Triton C-3 Commercial Pool and Spa Filters
- Challenger High Flow Pool and Spa Pumps
It also replaces the following alternate parts:
15-2509, 152509, AFP180, 152509Z, 90-423-2008, PAC-051-9315, PEN152509, PEN152509Z
What's Included
- 2 Pack: Square O-rings, each measuring 8-1/2 inches
Dimensions
- Inside Diameter: 8.72 inches (approx.)
- Outside Diameter: 9.13 inches (approx.)
- Gasket Thickness: 0.21 inches (approx.)
- Gasket Height: 0.24 inches (approx.)
Key Features
- Strong sealing design helps reduce leaks
- Made for Pentair Triton C-3 commercial filters
- Works with many Pentair pool and spa filtration systems
- Durable pool gasket for long-term use
- Ideal replacement for worn or cracked Pentair O-rings
Specifications
- SKU: BF-1525-09
- Part Number: 152509Z
- Type: O-Ring Replacement
- Color: Black
Trusted By Pool Owners Nationwide


