Stark O-Ring [THS Filter Manway EPDM 50D] (B4951Z) pleatco Useful when original control packs

Useful when original control packs are outdated or unreliable

The female threaded connection style makes this Waterway valve a practical fit for systems built around threaded plumbing rather than slip fittings

A DE grid replacement filter helps renew the working filtration surface inside a compatible diatomaceous earth filter assembly

Improves overall spa dependability and confidence

Stark O-Ring [THS Filter Manway EPDM 50D] (B4951Z) pleatco Useful when original control packsThe Stark O ring is designed for compatible THS filter manway applications where a dependable seal is needed between connected filter components. An O ring is useful because it helps create a barrier against leaks, supporting cleaner assembly and more dependable pressure retention within the filtration system. This replacement is especially useful when the original O ring is flattened, cracked, brittle, stretched, or leaking. The EPDM 50D construction