PARTS ANATOMY
Parts Anatomy Guide
Droppers and pumps are engineering targets, not just assemblies. JeongwooCos validates every component — materials, sealing, dispense behavior — so the feel and quality stay consistent.

Premium essence & serum line
Metal Dropper
Premium line combining a glass pipette with a metalized collar. The inner packing forms a first-line leak barrier while the metal finish lifts brand presence.
| Component | Role |
|---|---|
Rubber Bulb Silicone / NBR | Defines dispense volume and the soft touch feel |
Collar / Cap ABS + aluminum metalizing | External closure with gold, silver and other metal finishes |
Inner Packing LDPE | Primary seal that prevents leakage at the bottle neck |
Pipette Tube Soda-lime glass | Liquid draw/dispense channel; length and wall tunable |

Brand color-matched collection
Color Dropper
Color collection built with a rubber bulb, colored cap, inner packing and glass pipette. Pantone-level matching keeps brand identity alive on the container.
| Component | Role |
|---|---|
Rubber Bulb Silicone / NBR | Soft dispense feel with precise drop volume |
Cap / Collar PP + color coating | Pantone-level brand color matching |
Inner Packing LDPE | Sealing component that tightens the bottle neck and dropper cap interface to reduce leakage and evaporation |
Pipette Tube Soda-lime glass | Liquid draw/dispense with tunable drop tip geometry |

Metered-dispense pump structure
Essence Pump
A dispense mechanism where cap, actuator, collar, housing, spring and dip tube connector work as one. Dispense volume and return force are tuned at design time to cover high-viscosity serums down to light toners.
| Component | Role |
|---|---|
Cap AS / PETG | Protects the nozzle and prevents contamination in transit |
Actuator PP + metalizing | Converts user press into a dispense stroke |
Collar ABS + metalizing | Holds the actuator in place and sets the finish quality |
Housing PP | Inner chamber that governs dispense and fill volume |
Spring SUS304 | Return force that resets the actuator after each press |
Dip Tube Connector PP | Connects the dip tube and fits the bottle neck |

Particle size & spray-angle tuned
Mist Pump
A spray structure made of dust cap, nozzle actuator, collar, pump mechanism, dip tube connector and dip tube. Particle size and spray angle are adjustable for a tuned feel on mists, toners and fragrances.
| Component | Role |
|---|---|
Dust Cap AS / PETG | Protects the nozzle and preserves spray geometry |
Actuator / Nozzle PP | Determines particle size and spray angle |
Collar / Closure PP | Secures the pump to the bottle and holds dispense pressure |
Pump Mechanism POM + SUS304 | Piston and spring pressurize the liquid for a stable spray |
Dip Tube Connector PP | Links the dip tube to the pump body |
Dip Tube PP (clear) | Channel that draws liquid from the bottom of the bottle |
Related Guides
Need custom-designed accessories too?
Share your formulation, target feel and budget and we will propose the best accessory set.
Contact Us