Find your parts diagram
Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
Still not sure? Call (818) 818-6559 and we'll find it for you.
The Aladdin Union O-Ring, part number O-245, is a versatile and essential component designed to ensure a secure and leak-free seal in various pool and spa systems. This O-ring fits 2.5-inch union assemblies, providing compatibility with multiple models including Waterway Crystal Water filters. It's also referenced as a replacement part for Pentair System 3 components, making it widely useful across different brands and equipment types. Constructed from durable materials, this O-ring is built to withstand the demanding conditions of pool environments, ensuring long-lasting performance and reliability. Regular inspection and replacement of O-rings like this one are crucial for maintaining the efficiency and functionality of your filtration system.
- Versatile Compatibility: The Aladdin Union O-Ring, part number O-245, fits 2.5-inch union assemblies and is compatible with multiple models, including Waterway Crystal Water filters.
- Secure Seal: Ensures a secure and leak-free seal in various pool and spa systems, maintaining system efficiency.
- Durable Construction: Made from robust materials, designed to withstand the demanding conditions of pool environments for long-lasting performance.
- Essential Maintenance: Regular inspection and replacement of this O-ring are crucial for maintaining the efficiency and functionality of your filtration system.
- (1) Aladdin O-245 O-Ring
- Waterway Crystal Water DE Filters
- Waterway Crystal Water DE Filters
- Pentair Sta-Rite System 3 Filters
Note: This O-Ring may be compatible with your system, please refer to your systems owners manual to ensure compatibility.

