宝永ゴム Product Lineup

At Bouei Rubber, we carry out various types of "rubber molding." We can procure anything in a one-stop manner. Standard rubber molded products, undercuts are not an issue, and O-rings can also be custom-made from molds. Additionally, we can accommodate key rubber, trims with iron cores, and of course, extrusion without iron cores. 【Features】 ■ Standard rubber molded products, undercuts are not an issue ■ O-rings can be custom-made from molds ■ Silicone molded products can be formed, including tubular shapes (three-color molding is also possible) ■ We can also accommodate bellows, key rubber, trims with iron cores, and extrusion without iron cores *For more details, please refer to the PDF materials or feel free to contact us.

Rubber is considered to be non-slip, but by using this paint, it is possible to make it slippery. In other words, coating is possible.

"Ho-Ei Rubber" is a fabless manufacturer of rubber and resin components. Utilizing our experience and know-how from operating molding factories for rubber and resin, we provide proposals that meet our customers' needs. We handle not only rubber and resin molded products but also cutting of rubber sheets and sponge sheets, as well as composite products made of rubber, resin, and metal. As this involves our proprietary know-how, we cannot provide detailed information, but we have successfully addressed many projects that were considered difficult to realize. If you are facing issues with rubber or resin, please feel free to contact us.

Are you having trouble with the packing of batteries, especially lithium-ion batteries? Quality audits require appropriate production facilities due to the large quantities involved. We can handle audits without any issues and can accommodate the quantity as well. We look forward to your inquiries.

Hoei Rubber is not just a trading company; it is a fabless manufacturer with the DNA of a "former manufacturing site." We offer solutions from the perspective of someone who knows the ins and outs of the manufacturing process to challenges such as "difficulties with integrated molding" and "uncertainty in material selection." In addition to general molded products, we have numerous "quiet success stories" that require unique know-how, such as joining with metals and special die-cutting processes, details of which cannot be publicly disclosed. If you are a development or procurement manager facing technical barriers, please feel free to consult with us.

Are you struggling with complex order management such as "rubber from Company A, resin from Company B, and assembly in-house"? At Hoei Rubber, we can provide a one-stop solution for everything from molded rubber and resin products to precision cutting of sponge sheets, and even composite products that combine different materials. By merging our extensive network as a fabless manufacturer with our quality control capabilities based on manufacturing experience, we will establish a parts supply system that meets your ideal requirements. Whether it's small quantities of various types or mass production, please feel free to contact us first.

The strength of Hoei Rubber lies in our ability to propose the optimal manufacturing process by working backward from what our customers want to create. Because we have a deep understanding of the properties of rubber and resin, we can suggest material and shape changes that lead to cost reductions and functional improvements while avoiding risks. Our experience in operating molding factories allows us to provide advice from a practical perspective. Even if you are at the stage of "not knowing what to use," we will support you as a strong partner.

In the development of automotive and transportation equipment parts, the most challenging issue is likely "long-term durability under harsh conditions." In environments exposed to high temperatures, oil, and intense vibrations, even a slight mistake in material selection can lead to catastrophic failures. At Hoei Rubber, we utilize "vulcanization bonding technology," which firmly adheres rubber and metal at the molecular level, as well as specialized formulation designs that balance vibration-damping performance and durability, allowing us to meet the stringent specifications of critical safety components. Additionally, by proposing shapes that consider yield rates during mass production from the prototype stage, we achieve cost-competitive parts supply. From engine mount components to interior resin parts, we respond to the requests of Tier 1 and Tier 2 manufacturers with the solid expertise of our original manufacturing factory.

Rubber and resin components used in medical devices and analytical instruments require a level of "safety" and "precision" that sets them apart from general industrial products. The selection of biocompatible materials intended for contact with the human body and the establishment of a clean manufacturing environment that eliminates contamination to the utmost extent are essential conditions. As a fabless manufacturer, we have built a strong network with partner factories that specialize in medical-grade silicone molding and precision resin processing. We propose optimal methods and management systems to meet specialized needs such as "wanting to secure flow paths in micrometers" and "needing materials that can withstand sterilization processes." We support you as a partner in medical device manufacturing, including ensuring traceability.

Many of the causes of failure in machinery and industrial robots are due to fluid leaks from the wear and deterioration of sealing components. "Standard O-rings in the catalog leak immediately." "Packings swell due to the use of special chemicals." Do you have such concerns? Hoei Rubber listens to the usage environment (pressure, temperature, fluid type) and selects the optimal materials such as nitrile, fluorine, and urethane, designing and manufacturing "custom seals" tailored to the shape of the machinery. We provide functional components that not only fill gaps but also adjust sliding resistance (slipperiness) and propose long-lasting solutions to reduce maintenance frequency, maximizing the performance of the machinery.