A standard residential bathtub faucet cartridge typically lasts between 5 to 10 years of regular daily use before abrasive hard water mineral scale, rubber seal degradation, or ceramic disc wear causes it to leak or stiffen. While regular descaling in white vinegar can extend its lifespan, constant friction eventually degrades the delicate waterproof O-rings. Verification: Inspect the faucet handle annually for stiffness or minor weeping during routine home maintenance.
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