The targeted product line is to offer high-performance liquid silicone rubber (LSR) seal Coping methods for automotive powertrain, thermal management, and electrification products. In contrast to rubber moldings for general applications, for which normal rubber might be suitable, automotive operating conditions, which require silicone moldings to withstand -60°C to 230°C thermal variations and be under long-term exposure to oil, coolant, and fuel exposure and also support consistent high-frequency vibration values for zero compression rebound, are much harsher for silicone. The essence of JinYi Mold is to extend the principles of maximal material and process control in a biosafety manner as applied to medical grade silicone to automotive grade silicone.
Our company offers one-stop services for material compounding, mold design, precision molding, as well as performance checks. For major applications such as customized engine seals for automotive engines or customized seals for batteries used in new energy vehicles, simulation analysis and testing are conducted systematically in order to confirm that these seals comply with the OEM's "zero-defect standard" for their sealing function within the lifecycle span.
Composed of high-tear-resistant liquid silicone rubber (LSR), its platinum-based catalytic system is designed to provide very low volatile matter (meets VOC regulations) and superior resistance to aging. Leveraging the expertise of raw material control of medical-grade silicone casting, all basic glue ingredients can be traced.
Supply customized formulas for the materials based on the transmission medium, for example, when it comes to the transmission oil environment, there is a need to increase the anti-swelling effect, while in the case of the coolant for the new energy motor, compatibility with the materials must be guaranteed.
The mold for silicone mold casting with auto gasket is made of high thermal conductivity stainless steel with needle valve hot runner and vacuum assist function to produce complicated cross-sections (e.g. lip seals, multi-gradient thicknesses), with no air bubbles.
Through the mold flow analysis, the injection point and passage can be optimized to ensure that the material flows into the mold cavity in a laminar fashion in order to develop an isotropic molded part with the lowest possible internal stress, which plays an important role in the distribution of the sealing force.
Provides plasma treatment to significantly increase bond strength properties between the silicone material and the metal or plastic shell.
In the case of custom silicone Rubber auto parts requiring special specifications, conductive coating (for EMI shielding) or low friction coefficients can also be applied.
Our testing system integrates the requirements of both the automotive and medical industries.
Each lot of materials is tested for hardness (Shore A), tensile strength, tear strength, compression permanent deformation (ASTM D395), and hot air aging (e.g., 150°C/70h) to ensure that basic performance meets specifications.
The types of tests that the seals have to undergo include air tightness/leakage testing, high and -40°C to 150°C low-temperature cycle sealing force decay testing, and dynamic sealing durability testing on a simulated vehicle vibration table. In the case of custom-made silicone automotive engine seals, there may also be fuel immersion or oil aging testing.
Environment: The production environment is controllable, and the product has capabilities for providing cleanliness packaging ISO 14644-1 Class 7, and also has a material safety data sheet (MSDS) and report on RoHS and REACH.
This section JinYi Mold is able to support various requirements relating to rapid prototyping, which involves the use of 3D printing master molds for the production of silicone prototypes, as well as mass production with quantities reaching millions. Having experience in the sectors of automotive silicone casting and silicone mold casting for automotive gaskets, we can quickly address your customized requirements in materials, cross section, performance, and consult on the design of the sealing system. Are you looking for a dependable sealing product with capabilities in high temperature, chemical resistance, or constant vibration?
If your answer is yes, you can avail our engineering-proven Automotive Silicone Gaskets And Seals. Kindly provide us the values of the working conditions and the cross-sectional design data of the sealing material so that we can begin the analysis.
Jinyi Mold was established in 1998 and is headquartered in Dongguan, Guangdong. Our professional team provides injection mold and die-casting mold services, providing you support in every aspect from design, manufacturing to final assembly.
dozens of CNC machining centers (gantry & 5-axis), injection molding machines (80-1600 tons), EDM machines, automation equipment, etc.
Establish solid partnerships with Europe, Australia and Asia to carry out international export business.
Company production capacity: A 13,000㎡ production base in Maoming (built in 2022), backing an annual turnover surpassing 150 million RMB.
Possess High-Tech Enterprise Certification, ISO9001:2015 Quality management system certification.
Logistics follows international transportation standards, and packaging is packed in reinforced wooden boxes, filled with PE foam and wrapped in moisture-proof bags.
Marketing: Selina Chan
WhatsApp:+8618969686504
Email:selina@jy-mould.com
Contact us to discuss how we can support your project needs
Please know that when you choose Jinyi Mold, we are not only a supplier, but also a Chinese manufacturing partner with 25 years of experience in mold design, manufacturing, and assembly.
We specialize in providing high-precision mold manufacturing and injection molding solutions for industries including automotive, home appliances, consumer electronics, medical devices, and industrial equipment.
Quality is controlled through a comprehensive system, including mold flow analysis, strict material certification, in-process inspections, and final product testing. We also provide complete documentation such as steel certificates, hardness reports, and dimensional inspection reports.
For mold making, the lead time is typically 4–6 weeks after design approval. For mass production of plastic parts, it usually takes 2–3 weeks depending on part complexity and order quantity.
Yes, our engineering team provides full support from DFM (Design for Manufacturability) analysis to mold design optimization, helping customers accelerate product development and reduce production risks.
Our standard terms are 50% deposit upon order confirmation and 50% balance payment before shipment. Flexible payment arrangements can be discussed based on project scope and cooperation level.
Absolutely. In addition to mass production, we offer low-volume manufacturing, rapid prototyping via 3D printing and silicone molding, ensuring customers can quickly validate designs before full-scale production.
We accept a wide range of file formats including STEP, IGES, DWG, and PDF for mold design, DFM analysis, and quotation preparation.
Yes, we provide mold maintenance instructions with each shipment. If any issues occur, our technical team offers remote support or on-site service depending on the situation.
Yes, we have extensive experience in multi-cavity, family molds, and complex molds that require interchangeable inserts, ensuring cost-effective and efficient production for customers.
We are familiar with a wide range of thermoplastics including ABS, PC, PA, POM, PP, TPE, TPU, and high-performance engineering plastics based on customer requirements.
Yes. We are experienced in manufacturing molds compliant with international standards such as HASCO, DME, and MISUMI, ensuring smooth integration with overseas production lines.
We take IP protection seriously. We are willing to sign NDAs (Non-Disclosure Agreements) and have strict internal controls to ensure all customer designs and projects remain confidential.
