I was in a panic when the seal ring went missing after cleaning. I messaged the support team, and Michaela was wonderful—she quickly sent out a replacement seal ring from the older bottle warmer model to fit the new style warmer.
I can confirm that the older model’s seal ring fits perfectly with the newer style warmer. In fact, I personally think the older seal ring is slightly better, as it sits more snugly and isn’t as loose as the newer one.
Excellent idea and so handy when I am out and about