Pentair 355051275 Sta-Rite Cover O-Ring O299 for 1.5" WC112-148 Valves

The Pentair 355051275 (also known as part 35505-1275) is a genuine OEM replacement O-ring designed for Sta-Rite 1.5-inch multiport pool and spa valves. This heavy-duty #2-258 O-ring creates a critical seal between the valve cover and the valve body, preventing water loss and air leaks at the valve head.

Regularly replacing this wear item during routine service ensures your filtration system maintains proper pressure and prevents costly damage to your valve components.

🚩 PRO TIP: Installation & Maintenance

To maximize the life of your seal and ensure a leak-proof fit, apply a thin coat of Aladdin Magic Lube Teflon Lubricant to the O-ring before installation. Never use petroleum-based jelly (like Vaseline), as it will cause the rubber to swell and fail. Using a Teflon-based lubricant prevents the O-ring from pinching during assembly and extends the life of the seal by up to 3x.

PRODUCT FEATURES

• Genuine OEM Replacement: Guaranteed factory fit for Pentair and Sta-Rite equipment.
• Leak Protection: Engineered to seal the valve cover and eliminate leaks at the valve head.
• High-Durability Material: Made from high-quality rubber designed to resist pool chemicals and UV degradation.
• O-Ring Designation: Industry standard #2-258 (often referred to as O299).
• Easy DIY Repair: Essential maintenance part that can be replaced in minutes to restore system integrity.

COMPATIBILITY & CROSS-REFERENCES

• Sta-Rite Multiport Valves: Fits 1.5" models WC112-148 and WC112-148A.
• Hayward Cross-Reference: Directly compatible with Hayward Powerflo LX and Powerflo II pumps (replaces SPX1580Z1).
• Common Pump Models: Also used in various Pentair and Hayward pump strainer covers.

TECHNICAL SPECIFICATIONS

• Part Number: 355051275 / 35505-1275
• Brand: Pentair / Sta-Rite
• Inside Diameter: ~6.25 inches
• Weight: 0.02 lbs
• Material: Chemical-resistant Buna-N rubber

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