True stainless steel resists rust, but the surface layer can be scratched by abrasive cleaners or dropped on rough ground, exposing the steel underneath. That is where rust starts.
Light surface rust on the exterior is cosmetic. But if rust is inside, especially with pitting, retire the bottle - pits harbor bacteria and can leach metal into drinks.
Steel wool and harsh chemicals scratch deeper and invite more rust. Never use a rusty bottle for food or drink if it is pitted.
Hand-wash, dry fully, and avoid abrasive pads. Store uncapped.
For bottles that last, choose quality steel from the start. Browse our drinkware or ask our China buying office about 316-grade options.
If your bottle is beyond repair, STWADD is a BSCI-certified factory producing vacuum-insulated bottles, tumblers and flasks with OEM/ODM service from 500 pcs. Browse our drinkware categories or contact our team for a quote. Sourcing across multiple categories? Our China buying office consolidates orders into one container.
Contact Person: BOB
TEL: +86 150 8822 8843
E-Mail: bob@stwadd.com
WhatsApp: +86 150 8822 8843
Add: No. 138-1, Shifang East Road, Industrial Function Zone (Huku), Yongkang City, Zhejiang Province, China