The sealing structure design of the cosmetic pump head is one of the key factors to ensure that the product does not leak during use and storage.

Spring seal design:

Sealing mechanism: Spring is often used as the sealing element in the pump head. The sealing mechanism uses the elasticity of the spring to ensure that when the pump head is not pressed, the liquid storage chamber is effectively isolated from the outside world to prevent liquid leakage.

Spring material: Choose materials with good elasticity and corrosion resistance, such as stainless steel springs, to ensure that they do not lose elasticity and sealing properties after long-term use.

O-ring design:

Sealing mechanism: O-rings are usually used in connecting parts to provide additional sealing performance. The O-ring seal forms an effective sealing barrier by filling the gap at the connection, preventing air and external contaminants from entering the pump head.

Sealing ring material: Choose chemical-resistant and high-pressure-resistant rubber materials, such as fluororubber, to ensure that the sealing ring can maintain excellent sealing performance under different conditions.

Double seal design:

Structural design: Some high-end pump heads adopt a double seal design, that is, a two-layer sealing structure is provided at the key connection parts of the pump head to improve leakage blocking capabilities. This can include a dual combination of spring seals and O-ring seals.

Double-layer leak-proof: This design ensures that even if one sealing part fails, the other sealing part can still effectively prevent liquid leakage, improving product safety and reliability.

Anti-suckback design:

Anti-suckback structure: In order to prevent liquid from being sucked back into the liquid storage chamber after the pump head is pressed, the anti-suckback structure needs to be considered in the design. This may include valves or other back-back prevention devices in liquid lines.

Prevent contamination: This design is designed to avoid backflow of liquid after pump head operation, prevent contamination and ensure product hygiene and purity.

Sealing protective cover design:

External protection: A sealed protective cover is typically used to cover the nozzle portion to prevent dust, air, or other contaminants from entering the pump head. This helps maintain the cleanliness and effectiveness of the sealed portion.

Opening and Closing: The design of the sealed protective cover should ensure that the user can easily open and close it while maintaining sealing performance.

Environmental adaptability:

Temperature and humidity adaptability: The design of the sealing structure needs to consider that the sealing part can maintain stable performance under different temperature and humidity conditions to prevent leakage problems caused by environmental changes.

Corrosion resistance: Corrosion resistance needs to be considered when selecting materials to ensure that the sealing structure is not damaged under the different chemical compositions that may be present in cosmetics.