Pentair 59000600z Bulkhead O-ring Fns Plus De Filter

Product Description

The PENTAIR 59000600z is a 2-137 bulkhead O-ring designed for sealing the outlet pipe on Pentair FNS Plus diatomaceous earth (D.E.) filters used in pool and spa systems. Constructed from durable rubber, this O-ring provides resistance to wear and chemical exposure in aquatic environments. Measuring 2.25 inches in length, 2.25 inches in width, and 0.25 inches in height, it is sized for the 2-inch bulkhead fitting on FNS Plus filter assemblies. Pool service technicians and plumbers install this part as a direct OEM-style replacement to restore a proper watertight seal at the outlet pipe connection.

This O-ring is used in residential and commercial pool and spa installations where Pentair FNS Plus D.E. filters are installed. It seats at the 2-inch bulkhead outlet pipe location and is a common service item during filter teardowns, annual maintenance, and leak diagnosis. It is also noted as compatible with Titan and Titan CM applications (O-24 designation). Replacing a worn or cracked O-ring at this location restores proper system pressure and prevents water loss at the filter housing outlet.

Key Features

• 2-137 O-ring cross-section sized for the 2-inch bulkhead outlet pipe on FNS Plus D.E. filters
• Rubber construction provides durability and resistance to pool chemicals and wear
• Dimensions: 2.25 inches length by 2.25 inches width by 0.25 inches height
• Direct OEM-style replacement for maintaining a watertight seal at the filter outlet
• Compatible with Titan and Titan CM (O-24) applications

Compatibility

Fits Pentair FNS Plus Pool and Spa D.E. Filters at the 2-inch bulkhead outlet pipe location. Also listed for Titan and Titan CM (O-24) applications per manufacturer data.

Installation Notes

Installation should be performed by a qualified pool service technician or plumber. Before replacing the O-ring, shut off the pump and relieve system pressure by opening the air relief valve on the filter. Inspect the O-ring groove for debris or damage before seating the new O-ring. Applying a thin coat of O-ring-compatible silicone lubricant helps achieve a proper seal and extends service life.