Technological breakthroughs and quality enhancement! Doitrubber helps customers achieve a leap in yield rate with its precision sealing technology.

 On April 8, 2026, a group of customers from Shenzhen Micropump visited Huizhou Doitrubber Precision Products Co., Ltd. (hereinafter referred to as Doitrubber). The two parties conducted in-depth technical discussions on product yield improvement solutions and quality assurance systems. Doitrubber's core quality and R&D teams participated throughout the process, conducting on-site inspections of the customer's project drawings and finished products. During the inspection, the inspection standards and acceptable scope were communicated with the customer. After Doitrubber assigned a testing unit, a significant improvement in yield was achieved.

Sealing products in the pump, valve, and fluid control fields are one of Doitrubber's core businesses. The company has mature technological accumulation in this field, and its main products cover miniature solenoid valves, solenoid pumps, brushless DC water pumps, miniature diaphragm pumps, and miniature vacuum pumps. Core products include duckbill valves, umbrella valves, diaphragms, and piston bodies. These products boast advantages such as precision pressure control, tear resistance, chemical corrosion resistance, and fatigue resistance. They are widely used in high-end home appliances, water treatment, and medical/industrial micro-pump applications, meeting stringent requirements for media resistance, acid and alkali tolerance, product cleanliness, and the absence of free precipitable components. Furthermore, Doitrubber's products comply with RoHS/REACH environmental standards, providing reliable assurance for various applications.

For example, a Shenzhen micro-pump customer who visited the site purchased products from Doitrubber for use in water pumps. Previously, the customer had long been troubled by the problem of seals expanding in volume and failing after prolonged contact with swollen media. Doitrubber optimized its original EPDM material formula, effectively solving the problem of seals swelling after prolonged contact with swollen media, while also reducing the compression set rate of the seals. This improvement significantly extended the product's service life, bringing substantial value enhancement to the customer.

Meanwhile, addressing common issues in pump and valve seals such as substandard service life, easy breakage, inaccurate and unstable flow control, wear and deformation, and environmental compliance risks, Doitrubber has developed a mature solution:

1. Optimize the sealing structure strength by correcting the product wall thickness design ratio.

2. Precisely adjust material hardness based on measured flow rates and reduce the fluctuation range of various parameters, achieving strict control over production parameters throughout the entire process. Simultaneously, adjust hardness according to operating conditions or dynamically observe and analyze the movement angle of the seal to reasonably reduce the amplitude of the plastic swing bracket.

3. Develop formulas specifically designed to meet the environmental protection requirements of various countries and organize production in dedicated environmentally controlled workshops to ensure product access standards.

In 2025, to overcome the standardization production challenges of umbrella valves, Doitrubber established an umbrella valve mold structure research group. They successfully overcame technical difficulties such as deformation of the 2mm middle plate, difficulty in cleaning broken needles, product non-sticking to the upper mold, and difficulty in cleaning waste from the lower plate. Simultaneously, they standardized the key dimensions of the umbrella valve neck and ball, and effectively solved the problem of unmanageable dirt in the three-layer mold, laying a solid foundation for the standardized production of umbrella valves.

Huizhou Doitrubber Precision Products Co., Ltd. successfully overcame technical challenges such as deformation of the 2mm middle plate, difficulty in cleaning broken needles, product non-sticking to the upper mold, and difficulty in cleaning waste from the lower plate by standardizing the mold structure. They also unified the key dimensional standards for the neck and sphere, and effectively solved the problem of unmanageable dirt in three-layer molds. At the 2026 annual meeting, their umbrella valve mold team received a breakthrough award. Leveraging its technological advantages, precise understanding of customer needs, and proactive approach to industry issues, the company continues to achieve innovation and breakthroughs in the pump and valve sealing field, setting a good example for industry development.