Aladdin RO-KIT 321 | Hayward Pro Series Plus Sand Filter O-Ring Kit (RO-KIT321)

Keep your Hayward Pro Series Plus sand filter performing at its best with the Aladdin RO-KIT 321. This complete O-ring replacement kit is designed for quick, reliable maintenance by pros and DIYers alike.

• Included O-Rings: O-27 Air Relief Valve O-Ring, O-263 Valve Lid O-Ring, O-384 Tank Lid O-Ring, and G-382 Drain Cap Gasket — all the essential seals in one package.
• Compatibility: Specifically formulated for Hayward Pro Series Plus Sand Filter models listed (S-164T, S166T, S140T, S220T, S244T, S144T, S310T, S180T, S210T, S311X, S311SXV, S360SX, S210S, S220S, S244S, S310S).
• All-in-One Convenience: Designed to simplify maintenance with a single kit, eliminating the need to source individual O-rings.
• Lubricants Included: Includes Aladdin’s Magic Lube (PTFE-based sealant/lubricant with USDA H-1 rating) or Magic Lube II (silicone) to ease installation and extend seal life.
• Trusted Brand: From Aladdin Equipment Company, a 65+ year legacy in pool and spa parts, renowned for durable gaskets, o-rings, and maintenance solutions.
• Maintenance-Ready Design: Perfect for quick filter servicing to prevent leaks and keep sand, cartridge, or DE filters operating efficiently.

The RO-KIT 321 is more than a parts bundle—it’s a practical maintenance solution that helps protect your filtration system from common leak points. Replacing aging O-rings at the air relief, tank lid, and drain cap connections preserves proper suction, improves backwashing efficiency, and minimizes downtime. With the included Magic Lube, installation is smoother, seals seat evenly, and long-term performance is enhanced. Ideal for pool owners, service professionals, and DIY enthusiasts who value dependable, straightforward upkeep.

• 1 of O-27 Air Relief Valve O-Ring
• 1 of O-263 Valve Lid O-Ring
• 1 of O-384 Tank Lid O-Ring
• 1 of G-382 Drain Cap Gasket