Ribbed 33-400 Straight Sided Flat Child Resistant Threaded Closure

What this packaging is

Child-resistant protection built right into the closure — no separate liner, no extra steps. The Ribbed 33-400 Straight Sided Flat Child Resistant Threaded Closure is a white polypropylene cap engineered for pharmaceutical and nutraceutical packaging, including pill bottles, gummy jars, and vitamin containers. The 33-400 neck finish means broad container compatibility across standard pharmaceutical formats. Made in the USA by MRP Solutions, it supports faster domestic procurement for regulated product lines. The flat top accommodates labeling, embossing, or hot stamping, and can be produced with PCR content for brands tracking material sustainability. A reliable, compliance-ready closure for brands building trust on shelf.

Why brands choose this

• Regulatory-ready CR mechanism, no extra components: The integrated child-resistant design meets compliance requirements for pharmaceutical and nutraceutical applications right out of the box — no separate liner or insert needed, reducing assembly complexity and keeping your line moving.
• Flat top built for decoration versatility: The straight-sided, flat top profile supports offset print, embossing, heat stamping, kiss printing, and digital print — giving brand teams real flexibility to create shelf presence in a category where trust signals and legibility on the cap matter.
• Available with PCR content for material transparency goals: As more supplement and pharma brands face retailer and consumer scrutiny around packaging materials, this closure can be sourced with recycled PP content — giving your sustainability team a specific, documentable material story without switching formats.

Decoration