Is your Intex sand filter pump leaking? Chances are, a worn-out O-ring is the culprit. This pack gives you 10 replacement black rubber O-ring sealing rings that are compatible with several Intex sand filter pump models, including the popular 26323CA, 26323EH, and 26331CA. The dimensions are: 38mm inner diameter, 56mm outer diameter. These seals are crucial for creating a watertight connection between parts of the pump and filter, preventing leaks and ensuring proper pressure. Having a 10-pack is smart because O-rings can degrade over time due to sun, chemicals, and wear, so you'll have spares on hand for future maintenance. Replacing them is a simple and cost-effective DIY fix that can save you from buying a whole new pump. Just make sure to turn off and disconnect your pump, then swap out the old, flattened, or cracked O-ring with a new one from this kit. Keep your pool system running smoothly and leak-free all season long.