Unicel C-7699 Replacement Filter for Pentair Seahorse MY-100

Overview

The Unicel C-7699 is a pleated polyester cartridge filter element engineered for residential pool applications, delivering 100 sq ft of filtration area through a high-pleat-count Reemay nonwoven polyester media pack rated at 20-micron nominal filtration efficiency. Dimensional specifications: 7.0-inch OD, 3.0-inch ID, 30.0-inch length, with rated flow of 150 GPM at 15 PSI clean differential pressure. Construction features ABS injection-molded end caps — closed bottom and open-flow top — bonded to a perforated Schedule-40 PVC core for axial rigidity under operating loads. The element is rated for continuous service to 104°F and operating pressures to 25 PSI, with UV-stabilized end cap adhesive that resists chemical degradation under standard pool water chemistry. The 100 sq ft surface area is optimized for extended service cycles in moderate-to-heavy bather-load residential installations.

Service interval recommendation: residential installations — pressure-differential-based replacement triggered at ΔP ≥ 8–10 PSI above clean-filter operating baseline, or on an annual calendar cycle, whichever occurs first. Intermediate maintenance: rinse every 4–6 weeks under normal bather loads; chemical soak with TSP or enzyme-based cartridge cleaner every 3–6 months to remove oils, surfactants, and organic loading that resist water rinsing. Acid wash with muriatic acid at 1:20 dilution is compatible for calcium scale removal (20-minute maximum exposure, thorough rinse before reinstallation); ABS end cap construction tolerates standard acid wash procedures without adhesive degradation. Chemical compatibility: continuous service at ≤ 10 ppm free available chlorine or equivalent bromine concentration. Verify housing O-ring condition and seating at each service interval; conduct post-installation pressure verification before returning the system to automated operation. Standard Unicel 90-day manufacturing defect warranty applies through authorized distribution.

What's Included

Your order includes the selected quantity of replacement pool filter cartridges. Each unit is individually inspected for quality before shipping.