Compression molding

Involves pressing two sides of a mold together with a pre-shaped rubber form inside. The pre-form contains extra rubber to ensure the mold is fully filled, preventing defects in the final product.

Rubber injection molding

Precise amount of rubber is rapidly injected into a heated, closed mold under high pressure. This technique offers advantages such as shorter cycle times, lower unit costs, and minimal material waste.

Transfer molding

Combines elements of compression and injection molding. Uncured rubber is placed in part of the mold, compressed under pressure, and then forced through a small hole into the mold cavity to cure.

Custom Rubber Molding Specs

RPM offers advanced rubber molding solutions tailored to meet precise specifications and industry standards. With expertise in compression, transfer, and injection molding, we deliver high-quality, durable rubber components designed for diverse applications.

CriteriaSpecNotes
Molding ProcessesCompression Molding, Injection Molding, Extrusion, Transfer MoldingCompression molding for durability, injection molding for complex shapes, extrusion for high-quality seals, and transfer molding for shock-absorbing parts.
Material CompatibilityEPDM, Nitrile, Silicone, Neoprene, Natural Rubber, FKM (Viton), SBR, HNBR, FFKM (Perfluoroelastomer)Custom rubber parts are manufactured using optimal molding techniques based on part design, material properties, and production volume requirements.
Maximum Part SizeUp to 24″ x 24″ x 6″ (610mm x 610mm x 152mm)Custom capabilities for larger or more complex geometries available upon request. Consult with our engineering team for detailed analysis and feasibility studies.
TolerancesWe follow the Rubber Manufacturers Association (RMA) standards. High Precision (A1) through Non-Critical (A4).As a standard we quote using commercial (A3) tolerances. For more critical applications we can quote High Precision (A1) where required.
Shore Hardness RangeShore A 30-90Wide range of hardness options to meet specific application requirements, from soft, flexible components to hard, durable parts.
Chemical ResistanceResistant to oils, fuels, acids, alkalis, and solventsMaterials are selected and compounded to withstand harsh chemical environments, ensuring long service life and reliability in demanding applications.

Many industries require rubber manufacturing services for different equipment purposes. Whether you are looking for replacement critical components or new parts for innovative designs, RPM Industrial Rubber Parts can help.

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Related Resource

Rubber Compression Molding Guide

Our free guide offers insight on this tried-and-true manufacturing method for custom rubber parts.