Retrofit Seats LLC
Toilet Seat Adapter - Fits Case Toilets and Bemis Stay-Tite Seats
Toilet Seat Adapter - Fits Case Toilets and Bemis Stay-Tite Seats
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Upgrade your vintage Case toilet with this 3D-printed adapter bracket made from durable PETG. Designed for Case models with 7-inch hinge spacing and front-mounted bolts (including Case 1000, 1100, and 3000), it allows you to install modern Bemis and other Stay-Tite toilet seats with ease.
No need to search for expensive or discontinued Case toilet seats—this practical solution restores function while preserving the look of your classic fixture. Each kit includes stainless steel hardware and raised bumpers for a stable, level fit.
Order it printed in a color-matched PETG—close to original tones but not exact—or choose a neutral base to paint it yourself. Custom color options available.
For more information, check our About Page or view Installation Instructions.
Case® and Bemis® are trademarks of their respective owners. Retrofit Seats LLC is not affiliated with or endorsed by these companies.
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The toilet seat adapter fit perfectly and allowed for a new toilet seat on an old Case toilet from the early 1950's. When we purchased our home which is from 1790 and the bathrooms were updated in the 1950's we never knew modern toilet seats might not work on an old toilet. After some Google searching I found this company. Patrick is SUPER helpful and we sorted this out. The adapter is very nicely made and heavy duty. Thank you very much!
The adapter works great.At least I can get seat that’s functional but still very limited in styles and especially colors. The adapter seems a little pricey though.
Very good design. A little overpriced.
Thank you so much for the 4-star review and your feedback! We're thrilled you appreciate the design.
We understand your comment on the price, and we appreciate the opportunity to share a bit about our process. Each seat adapter is manufactured individually and then hand-finished, a careful process that takes several hours per unit to ensure a perfect fit.
Our main goal is to provide a reliable and affordable solution to keep these wonderful vintage Case toilets in service. With our adapter, customers can get a brand-new, modern seat solution for well under $100, saving them the significant cost and hassle of replacing the entire fixture or tracking down a pricey original seat.
We're always exploring ways to become more efficient, and your feedback is a valuable part of that. Thanks again for your support of our small business, and we hope the adapter serves you well for years to come!
This product has been a long sought after. The unit is well made and the color I selected is a reasonable match to my aged Case 3000 wall unit.
Thank you for producing this product, I have like others been searching everywhere possible for a replacement seat only to be held hostage by the $400.00 to $600.00 + price tag associated for a used seat. The retrofit adapter unit plus a Bemis Toilet seat (which I purchased elsewhere), cost under $85.00.
Thank you for creating and sharing your invention with others, I highly recommended it.
I bought one of these adapters for my PINK Case 1100 elongated bowl toilet. I suffered for 22 years with a white seat on my pink toilet after the original pink seat broke. (White was the only color I could find that fit my toilet.) This adapter works great with the Bemis 600SLOWT(round) & 1200SLOWT(elongated) Stay-Tite seats. Retrofit Seats, LLC worked hard with me to print an adapter in a light pink filament to closely match my pink toilet. He responds quickly to all communications you send him. He makes sure you are satisfied with his product. I have had the adapter mounted on my toilet for about 1 1/2 months now it is working great and holds the Bemis 1200SLOWT pink seat I have attached to it nice and tight. I finally have a PINK seat on my PINK toilet again!!!!!!! Thank you Retrofit Seats, LLC. Buy from this gentleman with confidence, you'll be glad you did! Steve C.
