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Overmolding

AFP’s overmolding process is part of a comprehensive, vertically integrated solution that includes engineering, tooling development, molding processes, tool manufacturing, and maintenance. This unified set of services gives us total control over the entire process and production chain.

AFP’s integrated approach offers customers key advantages:

  • End-to-end control ensures consistency, quality, and traceability
  • Rapid iteration and optimization occur with all teams under one roof
  • Fully customized solutions are tailored to each customer’s technical and operational needs
  • Flexible manufacturing setups range from manual operations for small series or complex parts to fully automated lines for high-volume production
  • In-house tooling allows fast adjustments and maintenance, reducing downtime and lead times

This level of integration enables AFP to deliver a broad range of custom overmolded components with high-performance and cost-effectiveness — consistently and reliably. AFP’s overmolding operations are ISO-13485, ISO-14644, and ISO-9001 certified.

Overmolding achieves important benefits in analytical instrument manufacturing.

  • Sealing and leak prevention: elastomeric overmolds create robust, integral seals in fluidic manifolds, connectors, and valve housings, preventing leaks at high pressures.
  • Chemical resistance: specialized thermoplastic elastomers (TPEs), fluoropolymers, or silicone-based overmolds resist solvents and reagents common in chromatography
  • Vibration and shock absorption: reduces stress on sensitive sensors, pumps, or glass components
  • Ergonomics and grip: improves handling of cartridges, columns, and control interfaces
  • Component integration: combines multiple functions (e.g., seal + mount + strain relief) into one molded piece, reducing assembly complexity

Typical overmolded life science products include:

  • Column end fittings: overmolded elastomers around stainless or PEEK fittings to ensure tight, chemical-resistant seals
  • Fluidic manifolds: overmolding integrates soft sealing layers into rigid polymer bases, simplifying fluid path design
  • Sensor and valve housings: protects internal electronics while maintaining chemical compatibility
  • Tubing connectors and caps: overmolded grips improve handling and sealing integrity
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