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Silicone & Rubber Components for Drones & UAV

Waterproof sealing, vibration isolation, cable management and payload protection for airframes — engineered for weight and for the consequence of failure.

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Components used in drone platforms

Silicone & Rubber Components for Drones & UAV - custom moulded component, view 1 of 4
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Overview

Drones impose a constraint most other applications do not: every gram matters. That changes the engineering, because the usual answer — specify a bigger, thicker, more robust component — is not available. A drone seal must achieve its sealing target at the minimum material volume, and a drone damper must isolate vibration without adding mass that degrades flight performance. The failure consequence is also different: a component that fails in flight does not stop a production line, it loses an aircraft.

The Problem This Solves

The dominant drone component problems are water ingress into electronics, vibration reaching camera payloads and destabilising the control loop, cable movement fatiguing conductors, and UV and temperature cycling ageing a part far faster than its ground-based equivalent. All four are addressed by design and material selection, and the weight constraint makes the design problem tighter rather than looser.

Component Families for Drones and UAV

FamilyFunction
Waterproof seals and gasketsElectronics bay, motor and connector sealing
Grommets and cable sealsPass-through sealing where cables leave a sealed volume
Vibration isolationCamera, gimbal and sensor isolation to protect image quality and control stability
Protective sleeves and bootsMechanical protection for exposed joints and connectors
Cable managementRouting retention and strain relief that resists fatigue
Feet and landing padsContact protection and cushioning

Designing Under a Weight Budget

Vibration and Camera Payloads

Vibration reaching a camera payload shows up as rolling shutter artefacts, reduced stabilisation headroom and shortened gimbal life. Passive elastomer isolation is the lightest way to address it. The engineering is frequency-based: the isolator must be tuned to the mass of the payload and the frequency of the excitation, which is why a damper selected by size will underperform. Where the payload mass is not yet fixed, we produce samples at more than one hardness so the tuning can be measured rather than guessed.

Cables: The Most Underestimated Failure

Conductor fatigue from uncontrolled cable movement is a common cause of intermittent failures that are difficult to diagnose on the ground and catastrophic in the air. The fix is mechanical rather than electrical: constrain the cable so bending happens over a defined radius in a location designed for it, and provide strain relief at the terminations. Moulded silicone components do this job well and add little mass.

How These Components Are Made

  1. Drawing review with manufacturability and tolerance feedback before quoting
  2. Compound selection against temperature, chemistry and compression set
  3. Tooling design and manufacture in-house, including shrinkage compensation
  4. First-article samples shipped with inspection data for your testing
  5. Process parameters locked after approval, with in-process checks in production
  6. Dimensional, hardness and visual inspection records issued with shipment

Case Studies

Frequently Asked Questions

How do you seal drone electronics without adding weight?

By controlling geometry rather than thickness. A correctly designed gland achieves the sealing compression band with less material than a thick gasket, and integrating the seal into an existing part removes a separate component.

Which material for a drone seal exposed to UV and weather?

Silicone and EPDM both resist UV and ozone well. Silicone is usually preferred for the wider temperature range and stability of mechanical properties.

How do I choose a damper for a camera payload?

From the payload mass and the excitation frequency, not from the mounting size. Where the payload is not finalised we produce samples at several hardness values so the tuning can be measured.

Can you reduce cable fatigue failures?

Yes. The solution is geometric: control the bend radius and the location where flexing occurs, and provide strain relief at the termination. Moulded silicone parts do this at low mass.

Do you supply parts for production drone programmes?

Yes. We reverse-engineer from drawings or samples, produce samples for evaluation, and design production tooling. Tooling cost is refundable against volume production.

Can components be produced in low volume first?

Yes. Pilot production before a volume commitment is normal for us, and the tooling refund model is designed to support it.

Related Pages

Zhengao Electronics — Custom Silicone & Rubber Engineering Partner. Dongguan, Guangdong, China. ISO 9001:2015. cuckoo@silicon-rubbers.com
Published: September 2026 · Last updated: 30 September 2026

Weight, vibration and sealing — the three constraints

Send the mass budget, the vibration environment and the sealing target. We will propose a component and a compound, and tell you where the trade-offs sit.

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Prefer email? cuckoo@silicon-rubbers.com