Premium 3D HMI Solutions

Epoxy Dome Keyboards

High-durability keyboards featuring clear, rigid 3D epoxy resin domes over each keycap. Combines the tactile flexibility of silicone rubber or membrane systems with the premium feel and scratch-resistance of hard plastic keycaps, offering long-lasting legend protection and IP65/IP67 sealing.

3D Lens Effect Keys Absolute Graphic Protection Tactile Snap Domes
Epoxy Dome Keyboards
3D Epoxy Dome TopRigid feel with elastic flex
Sub-Surface GraphicsScratch & chemical proof
Custom Key ShapesRound, square, or custom profiles
3D Epoxy DomeLens Keycaps
Up to 5MSwitch Operations
IP65 / IP67Ingress Sealing
Scratch-ProofSub-Surface Graphics
Tactile DomesCrisp Snap Action
Key Features

Elegant aesthetics combined with heavy-duty durability

Designed to deliver high-end optical clarity, wear-free labels, and reliable sealing protection for specialized machinery panels.

Premium 3D Aesthetics

Clear epoxy domes create a high-gloss, lens-like optical overlay, giving control panels a professional, premium visual look.

Hard Plastic Key Feel

Provides a rigid, glossy keytop surface that mimics molded plastic keycaps while maintaining the flexibility of a membrane board.

Wear-Proof Legends

All colors and symbols are screen-printed on the sub-surface sheet beneath the epoxy dome, ensuring they never scratch or wear off.

Robust Chemical Shield

The polyurethane/epoxy resin lens is completely impervious to oils, fuels, industrial solvents, alcohols, and sanitizers.

Tactile Metal Domes

Integrates stainless steel or gold-plated metal domes to deliver a clear, crisp tactile click feel under key compression.

Water & Dust Sealing

Fully sealed membrane layers and gasket backing secure an IP65/IP67 rating, shielding internal traces from liquid spillages.

Epoxy Dome Keyboard Construction
Pristine 3D Aesthetics

Premium 3D ergonomics with robust sub-surface durability

Keetronics epoxy dome keyboards elevate tactile inputs with high-gloss aesthetic styling and rugged graphic preservation. By casting clear polyurethane or epoxy domes on individual key tops, we create controls that feel solid, look exceptional, and resist heavy abrasion. Graphics are protected under the thick resin lens, assuring pristine visibility in medical systems, retail terminals, and industrial handhelds.

  • Clear 3D resin lens creates an ergonomic, slightly curved finger guide
  • Sub-surface printing guarantees markings will never wear off
  • Crisp mechanical response from underlying stainless steel domes
  • Resilient to petrochemical solvents, acids, and sanitizers
Technical specifications

Technical Metrics

Switch Technology

Switch typeEpoxy dome on membrane
Key travel0.4mm to 0.8mm
Actuation force1.5N to 4.0N (Configurable)
Contact platingGold-on-Gold / Silver
Switch lifecycleUp to 5M operations

Material & Build

Dome resinClear Polyurethane / Epoxy
Base film overlayPolyester / Polycarbonate
Graphic methodSub-surface screen print
Rigid backplateAluminium / FR4 PCB / Acrylic
Adhesive layerPremium 3M adhesive sheet

Environmental

Ingress sealingIP65 / IP67 Sealing
Scratch hardness2H to 4H Pencil hardness
Operating temp.−40 to +80°C
Chemical immunityOils, Greases, Alcohols
Thermal cyclingMIL-STD-810H compliant

Electrical & I/O

I/O interfaceFPC tail / ZIF / USB matrix
Contact resistance< 100 Ohms (matrix traces)
Operating voltage5V DC
Contact bounce< 5ms
ESD immunityWithstands up to 15kV
Switch Engineering

Three-dimensional layer stack

EPXY
Clear Epoxy Dome

Precision-cast polyurethane/epoxy resin layer that provides a high-gloss 3D lens profile and rigid tactile feel.

PRNT
Sub-Surface Graphics

Color and legend inks applied on the reverse side of the transparent overlay film, immune to touch friction.

DOME
Stainless Steel Dome

Tactile snap metal domes housed underneath each keycap position to provide crisp click feedback.

BASE
FPC / Membrane Circuit

Flexible printed circuit with silver/copper traces that close the circuit when the dome compresses.

Configure to spec

Optional additions

Customize lighting, feedback options, and surface detailing.

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Soft Polyurethane DomesChoose softer, elastic polyurethane domes instead of hard rigid epoxy domes.
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Embedded SMD LEDsIntegrate sub-surface LEDs to illuminate specific keys or status windows.
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Custom Bezel FramesHoused inside milled anodized aluminium bezel frames for rugged kiosk deployment.
+
Fluorescent InksGlow-in-the-dark or reflective pigments printed under the dome for dark setups.
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Anti-UV Non-YellowingFormulated with aliphatic resins that resist UV exposure and prevent yellowing.
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Braille / Raised GlyphsIncorporate Braille symbols or raised tactile dots directly within the epoxy mold.
Applications

Where it is used

Medical Electronics
POS Retail Terminals
Industrial Handhelds
Home Appliances
Security Access Keypads
Automotive Dashboards

Ready to integrate epoxy
dome keyboards?

Tell us your key shape preferences, layout parameters, graphic options, and electrical specifications - we will design the premium interface for your product.

High-gloss 3D key layouts
Under-surface legend protection
Crisp metal dome tactility
32+
Years
Experience
2000+
Projects
Completed
1000+
Satisfied
Clients

Trusted by leading organizations across defence, medical, industrial, and railway sectors worldwide.