Quick Answer
Most baby bottle leaks come from a loose collar, a worn nipple, or improper assembly. Check these first and tighten or replace parts as needed.
Common Causes of Leaks
Leaks often happen because the collar is not tightened enough, the nipple is misaligned, or the nipple has a tear. Another frequent culprit is a buildup of milk residue on the threads, which prevents a proper seal.
Some bottles are more prone to leaking than others, but the Kiki™ 9oz Baby Bottle is designed with a simple, secure assembly. Still, it's worth checking the same common issues first.
When to Replace Parts
If you've tightened everything and the leak persists, inspect the nipple for cracks or stretching. Silicone nipples can wear out over time, especially with frequent sterilization. Also, check the collar for cracks.
If the leak continues after replacing the nipple and collar, the bottle itself might be damaged. In that case, it's safer to switch to a new bottle.
Diagnosis and Fix Steps
- Symptom: Leak from the collar area: Tighten the collar firmly. If it still leaks, remove the nipple and re-seat it so it sits flat against the collar before tightening again. A loose collar is the most common cause; always start here.
- Symptom: Leak from the nipple: Check the nipple for tears or stretching. If you see any damage, replace the nipple with a new one. If the nipple looks fine, try flipping it to ensure the vent hole is not blocked.
- Symptom: Leak from the base or threads: Clean the threads and the bottle mouth thoroughly to remove milk residue that can break the seal. Dry parts before reassembling. Residue buildup is a common cause of leaks; regular cleaning prevents this.
- Symptom: Leak persists after all fixes: Inspect the bottle for cracks or warping. If you find any damage, stop using the bottle and replace it with a new one. If the bottle is damaged, it's time to replace it—don't risk a leak during feeding.
Product Facts
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Kiki™ 9oz Baby Bottle: The Kiki™ 9oz Baby Bottle is 100% plastic-free and features a medical-grade, platinum-cured silicone nipple. Platinum-cured silicone is more durable and less likely to tear, reducing the chance of leaks from nipple damage.
Kiki™ 9oz Baby Bottle
