In air or liquid filtration systems, cylindrical filter cartridges typically require the secure bonding of nonwoven fabric or filter paper to rigid plastic end caps at both ends.

Disposable medical consumables—such as blood collection tube caps, diagnostic reagent cartridges, and IV connectors—are subject to extremely stringent requirements regarding production environment cleanliness and product consistency.

In the field of automotive electronics manufacturing, housings for various sensors—such as pressure, temperature, and position sensors—are commonly made from engineering plastics like PA (polyamide) and PBT (polybutylene terephthalate).