Response to Hi Tom, this O-ring 10" ID, 1/4" (O-240) - 449 will be a perfect replacement for the seal plate o-ring on your Sta-Rite Dura-Glas / Max-E-Glas pump.  That o-ring started its life perfectly round, but the sealing surfaces flattened it out over the years.  Adding a little lubricant to it when you replace it will ensure it seals up perfectly and lasts a long time.  

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.