Ribbed 45-400 Straight Sided Flat Child Resistant Threaded Closure

What this packaging is

Child-resistant and ribbed for confident grip, the Ribbed 45-400 Straight Sided Flat Threaded Closure from MRP Solutions is a polypropylene cap engineered for the 45-400 neck finish — one of the most widely used thread standards across personal care and pharmaceutical packaging. The flat-top profile stacks cleanly on the line, and the straight-sided wall takes decoration well, with options including embossing, heat stamping, kiss printing, and digital print. Made in the USA, it's a reliable choice for brands managing tight timelines and domestic supply chains. Fits containers for lip care, eye cream, face moisturizer, body scrub, hair treatments, body lotion, vitamins, and gummies — a workhorse closure that spans multiple SKUs without compromise.

Why brands choose this

• Spans pharma and beauty SKUs without retooling: The 45-400 neck finish is a cross-category standard, meaning this single closure works across your vitamin, nutraceutical, lip, face, and body care lines — reducing component complexity and simplifying procurement for brand teams managing wide product ranges.
• Domestic manufacturing keeps supply chains tight: Made in the USA, this closure supports shorter lead times and reduced customs exposure — a real advantage for brands that can't afford the delays that come with overseas sourcing, especially during peak production windows.
• Decoration-ready surface unlocks brand differentiation: Compatible with embossing, heat stamping, tipping, kiss printing, and digital print, this flat-top PP closure gives brand and design teams real flexibility to build shelf presence without switching components across product lines.

Decoration