Medical LSR Overmolded Nebulizer Cup with PC Housing

Built for medical nebulizer systems, respiratory therapy devices, and inhalation drug delivery equipment, Medical LSR Overmolded Nebulizer Cup with PC Housing is a medical and healthcare silicone component centered on material system: Liquid Silicone Rubber + Polycarbonate; process: Two-Shot Injection Molding (LSR Over PC); base material: Medical Grade PC. This configuration is intended for buyers who need a production-ready part rather than a generic off-the-shelf silicone item.

For OEM and custom programs, the practical questions are how the part fits, what it must resist, and which dimensions or interfaces are critical. The following sections separate performance requirements, material/process information and application details so the product can be assessed more efficiently.

Functional Design Priorities

• The overmolded silicone material is specially formulated for medical applications. It offers excellent biocompatibility and is suitable for inhalation-related environments.
• ISO 10993 biocompatibility compliant
• USP Class VI certified material
• Odorless, non-toxic, and stable under long-term use
• Developed for direct or indirect patient contact
• The LSR is permanently bonded to the PC substrate through precision injection molding, forming a seamless sealing interface.
• Eliminates traditional O-rings and manual assembly

Technical Configuration

Where the Part Is Used

• Medical nebulizer systems
• Respiratory therapy devices
• Inhalation drug delivery equipment
• ICU respiratory support systems
• Home healthcare nebulization devices
• Medical gas and fluid control systems

Design Notes for Production

• The product is produced through a precision two-step injection molding process:
• PC Injection Molding Medical-grade polycarbonate is molded into the structural base, forming the rigid housing and internal flow channels.
• LSR Overmolding Liquid silicone rubber is injected onto the PC substrate, forming soft sealing structures and functional interfaces.
• Permanent Bonding Formation Under controlled temperature and pressure, LSR chemically or mechanically bonds with PC, forming a durable integrated structure.
• Silicone rubber has natural chemical inertness, making adhesion to PC challenging. This is solved through:
• Self-bonding medical-grade LSR formulations

FAQ for Engineering Buyers

What is the benefit of LSR overmolding compared to traditional assembly?

LSR overmolding eliminates separate sealing components such as O-rings, reducing leakage risk and improving long-term stability.

Is the product suitable for repeated sterilization?

Yes, it is designed for repeated autoclave sterilization between 121°C and 134°C without performance degradation.

Does the silicone become hard or degrade over time?

Medical-grade LSR maintains elasticity and mechanical stability under long-term use.

RFQ and Drawing Review

Production release should be based on the actual drawing and application requirements rather than the catalogue wording alone. The specifications above can be used as a reference when confirming dimensions, interfaces and performance expectations for the custom part.