Petmate Replendish Reservdelsfilterlock / Lock X-Small & Small

After two months of hard water gunk building up on the old cap, this replacement fit my small fountain perfectly and the water finally tastes clean again. The plastic feels solid, not flimsy like the one it replaced.

Snapped right onto my small fountain base with no leaking at the seam, which was my main worry. The plastic feels thicker than the old cap I tossed, so I'm hoping it lasts through a few more washings.

Was worried the threads wouldn't match after my old cap cracked, but this one screwed on snug with no leaks. Fits the small gravity waterer perfectly and the plastic feels thick enough to last. Cheap fix that saved me from buying a whole new setup.