152509Z-Style 8-1/2" Square O-Ring Replacement (2-Pack) Compatible with Pentair Triton Commercial Pool & Spa Filters

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