Ribbed 33-400 Straight Sided Flat Threaded Closure

What this packaging is

Ribbed grip, flat top, and a 33-400 finish that plays well with automated capping lines — the MRP Solutions Ribbed 33-400 PP Threaded Closure is built for pharmaceutical and nutraceutical packaging that can't afford to cut corners. Made in the USA from polypropylene, it's compatible with a wide range of bottle formats and suitable for vitamins, pills, eye care, face moisturizers, body scrubs, hair treatments, and lip products. The ribbed sidewall makes it easy to open and reseal, while the flat profile supports consistent stacking. Available with PCR content for brands working toward more responsible material sourcing.

Why brands choose this

• Made in the USA for regulated environments: Domestic manufacturing simplifies compliance documentation and shortens lead times — a real advantage when you're working within pharmaceutical or nutraceutical supply chains that have little tolerance for sourcing delays or quality surprises.
• Decoration-ready across six processes: Compatible with offset print, embossing, heat stamping, tipping, kiss printing, and digital print, this closure gives brand teams real flexibility to differentiate on-shelf without switching components across SKUs or product lines.
• PCR content available for sustainability commitments: For brands with material reduction or recycled-content goals, this closure can be sourced with PCR PP — giving you a credible, specific sustainability story without compromising the structural integrity required for capped pharmaceutical and personal care products.

Decoration