Injection molding is a process K.C. Seals uses when our customers are looking for high production, geometrically complex plastic or thermoplastic sealing components. The process is quite fast, with the ability of producing 1000’s of parts in hours. It is however quite expensive in regards to setup fees, so in-depth analysis is definitely needed when looking at cost benefit.
- Low costs in mass production per piece
- High precision
- Geometries only limited by mold manufacturability.
- High strength components
- Product consistency
- Very expensive tooling costs
Compression molding is a method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity. It is this method that KC Seals utilizes the most for high production quantities in elastomeric sealing components. Products such as u-cups, elements, and elastomer V-Seals are very popular when it comes to compression molding.
- Cheaper setup costs in comparison to injection molding
- Capable of large size parts beyond the capacity of extrusion techniques
- Cheap costs per piece
- Fewer knit lines and less fiber-length degradation than injection molding.
- Limited too flat or moderately curved parts
- Less-than-ideal product consistency
CNC Turning and Milling
CNC Turing and Milling is absolutely our most popular manufacturing capability. It was our first to initiate and we have been machining seals for over 15 years now. Typically used for prototyping, small quantity batches, and quick turnarounds. K.C. Seals is a proven leader in the turning and milling of both plastic and elastomeric sealing components.
- Very precise with tight tolerances
- Quick turnarounds
- Wide variety of materials available
- Expensive per piece cost
- Slower than multi-cavity compression and injection molding