Calaso Smooth 40-400 Straight Sided Flat Threaded Closure

What this packaging is

A 40-400 thread finish opens this smooth, straight-sided flat PP closure to an unusually wide world of compatibility — working across lip care, eye care, face moisturizers, body scrubs, hair treatments, body lotions, and even vitamins and pills. The Smooth 40-400 Straight Sided Flat Threaded Closure from Calaso is polypropylene-built for secure, repeatable fitment, with a glossy black finish that reads clean and premium on shelf. With an MOQ of just 50 units, it's genuinely accessible for emerging brands testing new formats or running limited-edition drops. When your container is already sorted, this closure is the finishing detail that ties the whole package together.

Why brands choose this

• Remarkably low MOQ unlocks small-batch flexibility: At just 50 units, this closure removes the usual volume barrier for indie brands, short-run product testing, or limited-edition seasonal launches — you're not locked into large inventory commitments before you've validated the format.
• One closure spans eight distinct product categories: The 40-400 thread standard is one of the most widely compatible finishes in personal care, meaning this single closure works across lip, eye, face, body, hair, and supplement formats — a real advantage for brand teams managing multiple SKUs or building out a product range.
• Glossy black finish delivers shelf-ready premium signal without decoration: The high-gloss black exterior creates a clean, sophisticated look straight out of the box, reducing the need for additional finishing steps and making it easy to align with both minimalist and bold brand aesthetics across mass and prestige retail.

Finishes