Die Casting vs. Injection Molding for Gasket Manufacturing

What is die casting and injection molding?

Die casting and injection molding are two processes used to manufacture products made from metal, plastic, rubber or polymers. The main difference between the two processes is injection molding uses metals, plastics and polymers in their raw form. 

Die Casting – The Process

Phase 1: Before the steel mold is closed, it is sprayed with a lubricant to regulate temperature and facilitate easy removal of the finished product.

Phase 2: Liquid metal is poured in the die through and placed under extreme pressure to begin taking form.

Phase 3: The cast is cooled by setting it in cold water so that the casting can be easily taken out.

Phase 4: The die is opened and the cast is removed.

Advantages of Die Casting over Injection Molding

  • Better for complex products due to die casting’s excellent accuracy.
  • Die cast machines are more cost-effective for increasing production rates.
  • Mass production for thousands of castings is easier than injection molding.

Cons of Die Casting

  • Manufacturing is limited to materials with high-fluidity elements.
  • Die casts are used more for smaller products about 30 grams or less.

Die Cut Manufacturing

Injection Molding – The Process

Phase 1: The two halves of the mold are closed using a clamping unit.

Phase 2: The raw materials are fed into the injection molding machine (IMM). Heat and pressure melts the materials.

Phase 3: As the molten material cools, it forms into the shape of the mold.

Phase 4: Once fully cooled, the part will be ejected from the mold automatically.

Advantages of Injection Molding over Die Casting

  • Shorter manufacturing time than die casting.
  • More than one raw material can be used in the IMM.
  • Fillers may be used to increase strength of product

Cons of Injection Molding

  • The running costs have the potential to increase.
  • Trouble molding highly detailed products.


Die Cutting Services

Our team of die-cutting professionals limit the term specifically to cutting custom shapes from soft or semi-rigid materials in single or multiple layers. We have a wide variety of materials available for die-cutting:

Die casting vs injection molding process

Many industries depend on our die-cutting services. While the process of die-cutting itself is relatively simple, the machinery required to custom create components has become quite advanced over the years. Our die cutting process is quick, accurate and custom tailored to your specific application. From rubber gasket manufacturing to custom assembly component fabrication services, the Kelcut team provides superior customer service and high quality die cut items for a number of different industries.

Quality Gasket and Component Fabrication Services

Kelcut Gasket and Rubber offers decades of experience to give you the best die cutting services on the market. We are your number one resource for superior die cut gaskets, pressure sensitive adhesives and custom assembly components. Whether you only need a single prototype or require a mass production run, we have you covered.

Contact the Kelcut gasket die cutting professionals today for a free quote for your gasket manufacturing needs.


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