Robotics

In the field of robotics, seals play a vital role in protecting critical robot components from dust, moisture, chemicals and other environmental factors, as well as ensuring that the robot’s moving parts operate smoothly with less wear and energy loss.

Seals materials

Rubber (NR, SBR, EPDM, etc.): Suitable for static and dynamic seals in general environments.

Silicone rubber (VMQ): excellent high temperature resistance and weather resistance, suitable for high temperature environments or applications requiring long term stability.

Fluoroelastomer (FKM/Viton): excellent oil, chemical and high temperature resistance, suitable for seals in harsh environments.

Polyurethane (PU): High strength and abrasion resistance, suitable for seals with high loads and high speed movements.

Polytetrafluoroethylene (PTFE): excellent chemical resistance, low coefficient of friction and non-adhesive, suitable for high performance seals and bearings.

Types of seals

O-Rings: for static and dynamic seals, suitable for hydraulic and pneumatic systems, as well as joints and connections.

Gaskets: for flat seals, e.g. for battery compartments, circuit boards and sensor interfaces.

Sealing strips: for door and window seals, e.g. for robot housings and hatch seals.

Oil seals: for sealing rotating axes to prevent lubricant leakage, e.g. for joints and drive shafts.

Dust covers: used to protect moving parts from dust and contaminants, e.g. joint and gearbox dust covers.

Seals design

Weather Resistant Design: Seals need to be able to resist the effects of natural elements such as UV rays, temperature changes and humidity.

Pressure Resistant Design: Seals need to be able to maintain sealing performance under high pressure environments to prevent leakage.

Temperature Resistant Design: Seals need to be able to maintain stable performance in high or low temperature environments.

Wear-resistant design: seals need to have good wear resistance to adapt to high wear environment.

Seals manufacturing and processing

Precision machining: Seals need to be precision machined to ensure dimensional accuracy and surface finish to ensure sealing performance.

Surface treatment: The surface of seals may require special treatment, such as polishing, coating, etc., to improve corrosion resistance and wear resistance.

Cleaning and Sterilization: In some applications, seals require stringent cleaning and sterilization to ensure sterility and contamination free.

Seals testing and validation

Precision machining: Seals need to be precision machined to ensure dimensional accuracy and surface finish to ensure sealing performance.

Surface treatment: The surface of seals may require special treatment, such as polishing, coating, etc., to improve corrosion resistance and wear resistance.

Cleaning and Sterilization: In some applications, seals require stringent cleaning and sterilization to ensure sterility and contamination free.

Examples of seals applications

Industrial robots: Use of wear- and pressure-resistant seals such as O-rings, oil seals and dust boots for joints and connections.

Service robots: use of weather and chemical resistant seals, e.g. housing and hatch seals, sensor interface gaskets.

Medical robots: use seals that are sterile and resistant to sterilizing agents, such as seals for surgical and rehabilitation robots.

Underwater robots: use seals that are resistant to water pressure and corrosion, such as seals for underwater probes and operational robots.

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