Response to Hello Tom- There are two o-rings on the knob control. I checked and they no longer sell just the two o-rings by themselves. You would have to purchase the Knob,control Assembly W/o-ring (clx200pa) part # 2110-08a.

An image is worth 1,000 words! Add an image or two to your comment to help ensure it is understood accurately.

Yes, please email me exclusive discounts, swimming pool tips and helpful how to guides. This comment may be posted on a public site. Do not include: HTML, references to other retailers, pricing, personal information, or any profane, inflammatory language.