Custom 80 Shore A Silicone Rubber Keypad Membrane Switch Assembly
Product Overview
WNRLN's 80 Shore A custom silicone rubber keypads are engineered specifically for demanding industrial remote control applications. Manufactured using high-purity silicone rubber compounds, these keypads deliver consistent tactile feedback, exceptional durability exceeding 1 million actuation cycles, and reliable performance across extreme temperature ranges from -40°C to +200°C. Every keypad is produced with precision compression molding technology, ensuring uniform key geometry and consistent actuation force across all keys.
Our industrial-grade keypads feature optional laser-etched backlighting, conductive carbon or gold-plated contact pills, and are available with IP67-rated water and dust protection when integrated with our custom gasket sealing system. From construction site crane remotes to factory automation control panels, our keypads keep operators in control in the harshest environments.
Application Scenarios
| Industry Sector |
Application |
Key Requirements Met |
| Construction Machinery |
Crane Remote Controls, Concrete Pump Panels, Excavator Consoles |
High durability, IP67 waterproof, vibration resistance, -30°C cold-start operation |
| Mining Equipment |
Underground Drilling Rig Remotes, Conveyor System Panels, Explosion-Proof Controls |
1M+ cycle life, dust-proof sealed design, chemical resistance, anti-static properties |
| Factory Automation |
CNC Machine Operator Panels, AGV Remote Controllers, Production Line HMI Consoles |
Consistent tactile feedback, oil/chemical resistance, custom graphic overlays |
| Marine & Offshore |
Ship Crane Remotes, Deck Machinery Controls, Subsea ROV Consoles |
Salt spray corrosion resistance, UV stability, IP67/68 water immersion protection |
| Logistics & Warehousing |
Forklift Remotes, Automated Storage Retrieval System Consoles, Conveyor Sortation Panels |
High key travel for gloved operation, abrasion-resistant legends, impact-resistant design |
| Agricultural Equipment |
Tractor Implement Controls, Irrigation System Remotes, Harvester Operator Panels |
Wide temperature range, sunlight/UV resistance, chemical/fertilizer resistance |
Technical Specifications
| Parameter |
Specification |
Remarks |
| Material |
100% Virgin Silicone Rubber |
Custom compound formulations available upon request |
| Hardness Range |
30 - 80 Shore A |
80 Shore A recommended for industrial applications |
| Operating Temperature |
-40°C to +200°C |
Continuous operation; short-term peak 250°C |
| Actuation Force |
150g - 400g (1.5N - 4N) |
Customizable per key position |
| Key Travel Distance |
0.5mm - 2.5mm |
Optimized for tactile snap feedback |
| Contact Resistance |
< 100Ω initial; < 500Ω after 1M cycles |
With conductive carbon pill contacts |
| Life Cycle Rating |
≥ 1,000,000 Actuations |
Tested at 25°C, 5Hz actuation frequency |
| Insulation Resistance |
≥ 100MΩ at 100V DC |
Between adjacent keys |
| Dielectric Strength |
≥ 500V AC (1 minute) |
No breakdown or flashover |
| Rebound Time |
≤ 5ms |
Full key return after actuation |
| Weighing Tolerance |
±0.05g |
Per individual key |
| Dimensional Tolerance |
±0.10mm |
Overall part dimensions |
Quality Assurance
WNRLN implements a rigorous 5-stage quality control system that ensures every keypad shipped meets or exceeds international standards:
- Stage 1 - Incoming Material Inspection: Every batch of silicone rubber compound is tested for Shore A hardness, tensile strength (≥ 8 MPa), elongation at break (≥ 300%), tear strength (≥ 15 kN/m), and specific gravity before entering production.
- Stage 2 - In-Process QC: Real-time monitoring of mold temperature (±2°C), compression pressure (±5%), and curing time (±3 seconds). First-piece approval required for each shift and mold change.
- Stage 3 - Post-Curing Inspection: 100% visual inspection under 3x magnification for flash, short shots, air traps, surface defects, and discoloration. Dimensional verification with CMM (Coordinate Measuring Machine) for critical tolerances.
- Stage 4 - Functional Testing: Statistical sampling (AQL 0.65, Level II per ISO 2859-1) for actuation force profiling, contact resistance measurement, life cycle endurance testing, and environmental stress screening (thermal cycling -40°C to +200°C, 85°C/85% RH damp heat).
- Stage 5 - Pre-Shipment Audit: Final AQL 0.65 sampling inspection including packaging integrity, label accuracy, quantity verification, and certificate of conformance issuance.
Certifications: ISO 9001:2015 Quality Management System | RoHS 2.0 (EU 2015/863) Compliant | REACH (EC 1907/2006) Compliant | UL 94 HB Flame Rating Available
Packaging Specifications
| Packaging Layer |
Material |
Purpose |
| Inner Layer |
Anti-static ESD polybag with silica gel desiccant (5g/pack) |
Moisture and static discharge protection |
| Spacer Tray |
Custom-cut PE foam tray with individual keypad cavities (thickness: 8mm) |
Key deformation prevention, impact absorption |
| Middle Layer |
Corrugated partition board (B-flute, 3mm) |
Multi-layer separation and crush resistance |
| Outer Carton |
5-layer export-grade corrugated carton (K=K, bursting strength: ≥ 250 PSI) |
International shipping protection |
| Reinforcement |
PET strapping bands (2x horizontal, 2x vertical) + edge board protectors |
Stacking stability and corner protection |
| Labeling |
Weatherproof vinyl labels with barcode, product info, handling marks (↑, ☂, ⚠ Fragile) |
Traceability and handling guidance |
After-Sales Service
24-Month Warranty
All WNRLN silicone rubber keypads are covered by a comprehensive 24-month warranty against manufacturing defects from the date of shipment.
Technical Support
Dedicated engineering team available via email, phone, and video conference for installation guidance, integration support, and troubleshooting.
Sample Retention
We retain production samples and mold records for a minimum of 5 years after the last production run, ensuring exact replication for repeat orders.
Defect Resolution
In the rare event of a quality issue, we provide free replacement or refund within 7 working days after root cause analysis confirmation.
Continuous Improvement
Quarterly quality performance reports shared with long-term partners, including SPC data and improvement recommendations.
Spare Parts Support
Custom molds stored in climate-controlled facilities; reorder-ready within 48 hours for existing tooling.
Factory Scale & Capabilities
| Facility Parameter |
Details |
| Total Floor Area |
8,000 m² (Production: 5,500 m²; Warehouse: 2,000 m²; R&D Lab: 500 m²) |
| Compression Molding Lines |
20 automated silicone compression molding stations (50T-300T capacity) |
| Monthly Capacity |
200,000+ pieces per month (single shift); expandable to 350,000+ with dual shifts |
| Tooling Capability |
In-house CNC mold fabrication center; standard mold delivery: 7-10 working days |
| Quality Lab Equipment |
Universal Testing Machine (UTM), Shore A Durometer (digital), CMM, Digital Microscope (200x), Environmental Chamber (-70°C to +300°C, 98% RH max), Key Life Cycle Tester, Salt Spray Chamber |
| Workforce |
120+ skilled employees including 8 senior R&D engineers, 15 QC inspectors, and 3 dedicated project managers for international clients |
| Annual Export Volume |
USD 12+ million, shipped to 30+ countries across North America, Europe, Middle East, and Southeast Asia |
| Lead Time |
Sample: 3-5 days | New Mold: 7-10 days | Mass Production: 15-20 days | Urgent orders negotiable |
Frequently Asked Questions
Q1: What is the minimum order quantity (MOQ)?
Our standard MOQ is 500 pieces per design. However, we understand that new projects may require smaller trial quantities — please contact our sales team for flexible sample and trial order arrangements.
Q2: Can you match a specific Pantone color for my keypad?
Yes. We offer full Pantone color matching service. Simply provide the Pantone code, and our compounding team will formulate the silicone rubber compound to achieve a color accuracy within ΔE ≤ 1.5.
Q3: Do you provide graphic overlay printing on the keypad surface?
Absolutely. We offer both screen printing (durable epoxy ink, rated for 500,000+ abrasion cycles) and laser etching (permanent legend, ideal for backlit applications). Custom graphic design support is available from our in-house CAD team.
Q4: What file formats do you accept for custom designs?
We accept 2D drawings in DWG, DXF, PDF and 3D models in STEP, IGES, STL, or SolidWorks (SLDPRT) formats. Our engineering team can also work from physical samples for reverse engineering.
Q5: How do you ensure consistent tactile feel across production batches?
We maintain a master reference sample for each approved design. Every production batch undergoes actuation force profiling (force-displacement curve measurement) using a digital force gauge tester, with a tolerance window of ±15g from the master reference. SPC data is recorded and reviewed for every batch.
Q6: Can the keypads be designed for backlighting?
Yes. Our laser etching process creates translucent legends that allow LED backlighting to shine through. We can also design light guide layers and recommend compatible LED specifications (color, brightness, viewing angle) for optimal backlight uniformity.
Q7: What is your sample policy?
Free existing stock samples are available within 2-3 working days (customer covers freight). Custom samples requiring new tooling: mold cost is charged at cost, typically USD 300-800 depending on complexity, with the mold cost refundable against the first mass production order exceeding USD 5,000.
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