Rubber Molds for Gasket

Rubber Molds for Gasket are essential tools for manufacturing precise custom gaskets required for various applications. They offer stable, reliable and long-lasting results and are ideal choices for numerous industries such as automotive, aerospace, construction and even food processing. You can customize them through Xiamen Sanlongda Rubber Industry Co., Ltd.

Product Parameter (Specification)

Manufacturing process

The manufacturing of Rubber Molds for Gasket is carried out based on the 2D drawings or 3D models provided by the customers. Our team conducts professional design by deeply analyzing the material shrinkage rate, demolding direction and molding process. Using CAD/CAE software, they optimize the flow channels, exhaust system and mold cavity layout, then proceed to the precision processing stage. They comprehensively employ CNC machining, EDM electrical discharge machining and high-precision grinding and polishing techniques to ensure the structure is precise and the surface is smooth. Finally, through mold testing and adjustments, they scientifically test the rubber fluidity and precisely set the pressure, temperature and curing time parameters to ensure the dimensions fully meet the requirements of the customers.

Structural Design

Open mold:

Simple structure, easy to operate, but easy to lose glue, flying edge thick. Suitable for low-hardness rubber gaskets with low precision requirements.

Closed mold:

The cavity is completely sealed, with good pressure transmission, thin flash, high dimensional accuracy, suitable for high-precision and high-hardness gaskets.

Injection mold:

The rubber is injected into the closed cavity through the flow channel system, which has high production efficiency, few flying edges, high automation degree and is suitable for mass production.

Quality inspection and acceptance standards

The Rubber Molds for Gasket require strict control over various manufacturing accuracies and molding effects. The cavity dimensions must comply with the tolerance requirements specified in the product drawings of the IT6-IT9 precision standard. The surface must undergo fine polishing treatment, with the roughness controlled within the range of Ra0.2-Ra0.8. There should be no defects such as scratches, marks, or sand holes on the surface. After heat treatment, the hardness of the working parts of the mold should meet the design standards and improve the wear resistance and service life of the mold. The upper and lower molds, guide pins and guide sleeves, and other key mating components need to maintain a reasonable gap and operate smoothly without any jamming or offset. The sample should be tested comprehensively, including dimensional accuracy, appearance quality, fly-edge thickness and molding integrity, to meet customer requirements and quality standards.

FAQ

Which materials can be produced?

We can produce various elastomer materials such as NBR, EPDM, silicone, fluororubber, and natural rubber. Customers can choose the appropriate rubber formula according to the usage environment.

Are the molds suitable for automated production? 

OK. Rubber Molds for Gasket can be combined with rubber injection machines or automated vulcanization equipment to achieve continuous and high-efficiency production.

Do you support customizing rubber gasket molds of different sizes?

Yes. Please contact us and we can design molds of different specifications, shapes and accuracy requirements based on the samples, drawings or 3D files provided by the customer.

How to reduce burrs in the production of rubber gaskets?

By optimizing the mold parting surface, controlling the processing accuracy, improving the exhaust structure and adjusting the vulcanization parameters, burrs can be reduced.