What material should be used for seating brushes in elevator systems?

Seating brushes in elevator systems are typically made from rubber due to its flexibility, durability, and effectiveness in creating a good seal. Rubber brushes can compress and conform to the surfaces they contact, which helps in reducing noise and preventing the ingress of dust and debris into critical components of the elevator system. This is vital for maintaining the operational efficiency and longevity of the elevator.

Metal, while strong and durable, does not provide the necessary flexibility or sealing efficacy that rubber can offer. Sandpaper, although abrasive, is not a suitable material for seating because it could wear down quickly and create excessive friction or damage to the surfaces it contacts. Plastic might be used in some applications, but it generally lacks the resilience and sound dampening qualities that rubber provides in the context of seating brushes.