Paragon Aquatics 19" Vertical Plastic Tread [w/Hardware] (44101) mersen O-rings like these are useful

O-rings like these are useful because they help maintain a cleaner seal at the air relief point

When rebuilding a pump with a larger shaft size

Useful when the original O-ring is flattened

Improves leak protection and service confidence

The Balboa 1

Paragon Aquatics 19" Vertical Plastic Tread [w/Hardware] (44101) mersen O-rings like these are usefulThe Paragon Aquatics vertical plastic tread is designed for compatible pool ladder or step applications where a secure stepping surface is needed. A tread is useful because it helps provide footing for entry and exit, supporting safer access and more dependable use of the ladder assembly. This replacement is especially useful when the original tread is cracked, worn, damaged, or slippery from age and use. Including hardware helps support cleaner