Rubber moldings and extrusions are versatile components made from rubber materials such as EPDM, silicone, neoprene, or natural rubber. They are manufactured through molding or extrusion processes and find applications across various industries for sealing, insulation, cushioning, and protection purposes. Here’s an overview of rubber moldings and extrusions:

1. Rubber Moldings:

   • Custom Shapes: Rubber moldings can be custom-designed to meet specific dimensional and functional requirements. They are commonly used for creating seals, gaskets, bumpers, and other specialized components.
   • Compression Molding: This process involves placing rubber material into a mold cavity and subjecting it to heat and pressure to achieve the desired shape. Compression-molded rubber parts have uniform density and excellent dimensional stability.
   • Injection Molding: Injection molding is suitable for producing intricate rubber components with tight tolerances. It involves injecting molten rubber material into a mold cavity under high pressure.
   • Transfer Molding: Transfer molding combines aspects of compression and injection molding. Rubber material is preheated and then transferred into a closed mold cavity, where pressure is applied to shape the part.
   • Applications: Rubber moldings are used in automotive, aerospace, construction, electronics, and other industries for sealing doors, windows, enclosures, and various mechanical components.

2. Rubber Extrusions:

   • Continuous Profiles: Rubber extrusions are produced by forcing rubber material through a die to create continuous profiles of various shapes and sizes. Common shapes include tubing, channels, strips, and gaskets.
   • Cold Extrusion: Cold extrusion processes are used for softer rubber materials that do not require high temperatures. This method is suitable for producing simple profiles and seals.
   • Hot Extrusion: Hot extrusion involves heating the rubber material before extrusion, allowing for greater shaping flexibility and the production of more complex profiles.
   • Dual Durometer Extrusions: Some extrusions feature multiple layers of rubber with different durometers (hardness levels), providing enhanced sealing and durability properties.
   • Applications: Rubber extrusions are used for weatherstripping, edge trim, sealing profiles, gaskets, and protective covers in industries such as automotive, construction, marine, and manufacturing.

Rubber moldings and extrusions offer advantages such as flexibility, resilience, chemical resistance, and weather resistance. They are crucial for creating effective seals, insulating against noise and vibration, and protecting components from environmental damage. Manufacturers often provide customization options to tailor these products to specific application requirements.