ZJ Pack 18-410 PP Slim Serum & Treatment Pump, 0.23cc Dosage with External Spring

What this packaging is

An external spring positioned outside the pump body keeps the mechanism completely separate from the formula — a design detail that matters most for sensitive actives, preservative-free serums, and high-end treatments where ingredient integrity is non-negotiable. The 18-410 PP Slim Serum & Treatment Pump delivers a precise 0.23cc dose per stroke, built from durable polypropylene with an 18mm neck and standard 410 finish for broad container compatibility. Its slim actuator and glossy collar make it a clean fit for face serum, foundation, primer, eye cream, and BB cream. Decoration options including electroplating, spray coating, and water transfer printing give brand teams real customization flexibility.

Why brands choose this

• Liquid-contact-free external spring: The spring mechanism sits outside the pump body entirely, never touching the formula. This matters for brands formulating with sensitive actives, water-free products, or preservative-free serums where metal or spring contact can compromise stability — a meaningful functional advantage over standard internal-spring pumps.
• Precision 0.23cc dosing for high-value formulations: A controlled, repeatable dose per stroke reduces over-dispensing on premium serums and treatments — directly supporting the perceived value and longevity of the product. Consumers using luxury actives or clinical-grade eye creams benefit from knowing each pump delivers a consistent, calibrated amount.
• Broad decoration versatility supports brand differentiation: Electroplating, spray coating, and water transfer printing give product developers real options to align this component with brand aesthetics — from clinical and minimal to fashion-forward and elevated. In a category where pump caps are often an afterthought, a decorated collar can become a deliberate brand touchpoint at the moment of use.

Decoration