This is an o-ring designed for a Sta-Rite Swimquip Skimmer. This o-ring is identical to O-242, Jandy/Polaris Caretaker 11301, Speck 2926241210, Sta-Rite Swimquip 35505-1281.
This o-ring has been manufactured in accordance with OEM specifications and are designed to meet or exceed specifications.
