4 Pack Silicone Sealing Rings - Replacement Gasket for Swell, Mollcity, Mira and Iron °Flask Retro Cola - Shape Sport Insulated Water Bottles

It is a rubber ring, what more needs saying?They go bad and this was a perfect replacement, kept us from throwing out the insulated bottle. Thank you rubber ring making company!

they fit perfectly

The media could not be loaded. “Water Bottle Cap Seal Replacement”I purchased two 17oz stainless steel water bottles, but the cap seals went missing after my little boy lost them while playing. After some research, I found this water bottle cap seal, which looked similar to the ones my bottles originally had. I decided to give it a try.The product arrived in a simple, small, clear plastic bag. The seals are somewhat clear and white, made from a flexible material that can stretch to fit over slightly larger caps.Initially, I wasn’t sure how to install the seals properly, as the product didn’t come with a manual, nor was there a tutorial video on the product page. After trying a few different fitting styles, I eventually figured out the right way to install them (you can see my installation process in the attached video). Once fitted correctly, the seals were leak-proof and fit perfectly.Overall, I’m satisfied with the product, but I recommend that the seller include a simple installation manual or create a tutorial video to help other buyers avoid confusion. This could potentially reduce returns due to incorrect installation.

No leaks. Fits perfectly

The images looked exactly like my water bottle, so I thought these would work. As there is no brand on my stainless steel water bottle, I don’t have much to go on. While I could get the o-ring on the lid, it did not stop the bottle from leaking. So obviously, not the right fit.

I now have a dip free water bottle. The product is well made and priced great.

Works perfectly on my 17 oz Swell bottle!

Not quite a "perfect fit" for my S'well 9 ounce bottle. The original gasket forms a tight seal with a squeak when you tighten the cap, this replacement doesn't. It's slightly smaller and of thinner material than the original gasket and also not as tall.