On December 1, 2025, DOIT Company held its tenth improvement achievements presentation conference. At the conference, Lu Changlin, the manager of the R&D department, shared the department's improvement achievements for this month. The practical case of "breaking through with technology and maximizing sales" demonstrates DOIT's professional capabilities and customer service strength in the field of precision rubber products and custom rubber seals.
The G1435 client of this cooperation is a supplier of equipment in the biomedical field. Its OR1593V7001 O-ring is used in the dynamic sealing system of the reagent storage room. Once the burrs exceed the standard, it may lead to reagent leakage and instability of the storage environment, directly affecting the accuracy of the terminal experimental data. Previously, this medical-grade rubber seal product was developed by a peer for nearly two months but still failed to meet the precision requirement of "burrs ≤0.03mm" and the issue of batch stability. After inquiring from multiple sources within the industry, the customer eventually transferred the project to DOIT, a trusted precision rubber components manufacturer specializing in high-tolerance rubber parts.
The OR1593V7001 rubber O-ring product of customer G1435 was originally developed by a peer. However, due to the non-compliance of burr precision and product stability, it directly affected the functional use. Therefore, the customer turned to seek cooperation with DOIT. This O-ring is applied in the biomedical dynamic sealing scenario of reagent storage rooms. The customer has strict requirements for burrs (≤0.03mm) and dimensional accuracy of the precision rubber seal. After an internal assessment, DOIT promptly took on the project, leveraging its expertise in OEM/ODM rubber components for medical applications.
Upon receiving the demand, DOIT promptly formed a cross-departmental breakthrough team integrating R&D, production and quality control: the R&D team prioritized optimizing the structure of the mold parting surface to minimize burrs from the source. Fine-tune the shrinkage rate parameters of the medical-grade rubber compound at the product design end to meet the elastic requirements of dynamic sealing scenarios. In the production process, rubber vulcanization, trimming and inspection are split into three control sections. Online size spot checks are added to each section to ensure that the sample data meets the micron-level precision standards of biomedical rubber components.
After the first sample was delivered, the customer reported that the measured value of the burr was 0.04mm. The team immediately went to the customer's site for verification and found that the difference originated from the measuring tools: the customer used a 180-fold projector (with a stricter precision judgment threshold), while DOIT originally used a 100x tool. In response to this detail, the team adjusted the process parameters within 24 hours, changing the manual operation of the trimming process to a semi-automatic equipment for refinement—ensuring the final precision rubber O-ring meets the burr ≤0.03mm requirement and achieves consistent batch stability.
This improvement not only reflects DOIT's core values of "customer-centered and long-term continuous improvement", but also interprets its technical positioning of "professional design and manufacturing of precision rubber products" with actual achievements. By precisely addressing the pain points of medical-grade sealing components, DOIT not only helps customers solve practical problems in biomedical equipment sealing, but also further consolidates its position as a "respected and trusted partner" for clients in need of high-precision rubber seals and custom OEM rubber components.
As a professional design and manufacturing company specializing in precision rubber products with 15 years of industry experience, DOIT has established a benchmark in niche segments by leveraging its outstanding technical capabilities: The global market share of its automotive O-ring seals reaches 40%, while its Micro Pump Seal (a core component for micro-pump-valve systems) leads the industry in both dimensional precision and service life - outperforming competitors in ensuring leak-free performance for miniature fluid control devices. Meanwhile, the company is equipped with a clean medical shop dedicated to producing high-performance medical silicone seal that meet stringent medical grade standards, and also offers complementary precision sealing solutions such as Precision O-ring Seal and Mini Valve Seal for medical devices. These products, when combined with critical components such as check valve, form a complete sealing system that further ensures the reliability and safety of medical devices.
DOIT is committed to providing customers with timely and professional technical service support, addressing their specific needs with customized solutions. We look forward to hearing from you.