When does my seat expire? What is my seat's expiry date? July 23, 2020 04:42 Updated All Clek car seats have an expiration of nine (9) years from their date of manufacture. Do NOT use a seat once it has passed its expiry date. Please visit the following links to find your seat's date of manufacture label: liing liingo foonf fllo oobr olli ozzi Related articles How do I find my Foonf's date of manufacture and serial number? When does my Foonf expire? How do I find my Fllo's date of manufacture and serial number? When does my Fllo expire? How do I find my Oobr's date of manufacture and serial number? When should I move my child into a booster seat? Should I continue using my seat if it's involved in a collision? Comments 0 comments Article is closed for comments.