28-400 Bottle Caps

About

This collection covers 28-400 bottle caps built for 8 oz and 16 oz glass bottles — screw-on lids, lotion pumps , and trigger sprayers, all cut to the 28mm/400 thread-finish standard. Pick black , white , or silver, depending on what your product needs. Everything here ships wholesale, by the box, so your per-unit cost drops as the order grows. Matching the Cap to the Job A screw-on lid is the simplest option if you just need a secure, leak-resistant seal — good for oils, tinctures, and anything that doesn't need to be dispensed on the fly. Lotion pumps make sense for thicker liquids: lotions, creams, liquid soap, anything a customer will pump out a few times a day. Trigger sprayers are built for cleaning solutions, hair and body sprays, and other products that need a fine, controlled mist. Most brands end up using two or three of these across a single product line. Compatibility You Can Count On Every cap in this collection is matched to the 28-400 neck finish, so fit isn't something you have to guess at. Polycone and PE liners handle most standard fills without a problem, and our aluminum caps with PE liners are a solid pick if you want a more premium, metal-forward look on the shelf. That said, formulations vary — test a sample with your actual product before committing to a full order, especially if you're working with anything acidic, oil-based, or hot-filled. Who This Is For Food & beverage brands sealing sauces, syrups, and bottled drinks Cosmetics and skincare lines using pumps or sprayers for daily-use products Essential oil and tincture makers who need a tight, leak-proof seal Pharmaceutical and supplement brands bottling liquids or tinctures Private label businesses building out a packaging line under their own brand Cleaning product companies filling sprayers for household and industrial use DIY and craft sellers making small-batch soaps, lotions, and sprays FAQ What sizes and colors are available? These 28-400 caps fit 8 oz and 16 oz Boston round bot