Response to Not necessarily because the o ring may sit in a channel that may make the actual filter diameter different based on the mold design. Ultimately you really want to try your best to locate the specific filter model to cross reference parts for it. 

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.