Willow Wave Gaskets (2-pack)

I was skeptical about spending extra on gaskets, but the leak-proof seal has been a lifesaver during middle-of-the-night pumping sessions. The silicone feels sturdy and holds its shape even after multiple dishwasher cycles. My countertops have stayed dry ever since.

The seal is noticeably tighter with these in place, and I've yet to see a single drop escape even when the bottle tips over in my bag. They're also much easier to clean than the flimsy plastic ones I had before.

My cooler finally stopped dripping and my milk bags stay sealed even when I toss them in my bag sideways. The silicone is flexible enough that it snaps into place without a fight.