28-400 Bottle Caps

Q: Do the caps come with a liner?

Yes. Most screw-on lids ship with a polycone or PE liner already inside, built to handle standard fills without leaking. If your product needs a specific liner type, reach out before ordering to confirm compatibility.

Q: Is there a minimum order?

These closures are sold wholesale by the box, with box counts running 90 to 120 units depending on the cap style. Smaller test quantities are available through the samples collection.

Q: Can I add custom labels or printing to my order?

Yes, custom bottle labels are offered separately, allowing bottles to be branded to match a product line.

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 bottles, and come in black, white, and silver depending on the cap style. Screw-on lids, pumps, and trigger sprayers are all stocked in this size.

Do the caps come with a liner?
Yes. Most of our screw-on lids ship with a polycone or PE liner already inside, built to handle standard fills without leaking. If your product needs a specific liner type, reach out before ordering and we'll help you confirm compatibility.

Is there a minimum order?
These closures are sold wholesale by the box — box counts run 90 to 120 units depending on the cap style. If you need a smaller quantity to test first, check our samples collection.

Are these caps food-safe?
The materials used are food-grade rated, but compatibility depends on your specific formulation, especially with acidic or oil-based products. We'd recommend testing a sample before running a full production batch.

Can I add custom labels or printing to my order?
Yes — we offer custom bottle labels separately, so you can brand your bottles to match your product line.

How fast does wholesale shipping go out?
Wholesale orders ship within a few business days of purchase. Exact transit time depends on your location and order size.

We've supplied wholesale glass packaging and closures for more than six years, and this collection gets restocked regularly — check back if the size or color you need shows as sold out.