Made of high-purity industrial-grade LSR via injection molding, this button cap features excellent waterproof, dustproof, wear-resistant and anti-aging properties, with sensitive rebound, suitable for various electronic and industrial control keys to extend service life, customizable in multiple specifications.
Material
Industrial LSR
Hardness
Shore A 30-70
Temperature
Certifications
Applications
-40°C ~ +220°C
Colors
Black, White, Transparent, Customizable
# Industrial Wear-resistant Waterproof Liquid Silicone Button Cap
The Industrial Wear-resistant Waterproof Liquid Silicone (LSR) Button Cap is a high-precision, custom-molded protective and functional component designed for electronic control interfaces operating in harsh industrial environments. Manufactured via injection molding of medical and industrial-grade liquid silicone rubber, this product combines soft, responsive actuation feel with extreme durability, addressing common pain points of traditional plastic or rubber button caps such as cracking, water ingress, abrasion wear, and color fading after long-term use.
Core features include IP67-rated ingress protection, >1,000,000 press cycle lifespan, resistance to industrial chemicals, UV radiation, and extreme temperatures, as well as customizable graphics, hardness, and dimensions to fit diverse button assemblies. Unlike solid silicone or thermoplastic elastomer (TPE) alternatives, LSR button caps maintain consistent elasticity and dimensional stability across a -60°C to 220°C operating range, making them suitable for heavy-duty industrial, outdoor, and medical device applications where reliability is non-negotiable. The product is available in standard and custom configurations, with options for backlit etching, conductive contact inserts, and adhesive backing for fast installation.
Unlike TPE or natural rubber button caps that crack or lose elasticity after 100,000–300,000 presses, our LSR button caps withstand a minimum of 1,000,000 actuation cycles without permanent deformation or actuation force drift. The high tear strength and low compression set of LSR ensure the cap maintains a tight seal around the button housing even after years of repeated use, eliminating unplanned downtime and replacement costs for industrial equipment.
The one-piece molded LSR structure creates a seamless barrier against liquid, dust, and particulate ingress, with a standard IP67 rating that allows the button to be submerged in 1 meter of water for 30 minutes without damage. For applications requiring submersible operation, we offer fully encapsulated IP68-rated designs that withstand continuous immersion in 10 meters of water, making the caps suitable for outdoor construction equipment, marine control panels, and washdown-friendly food processing machinery.
Our LSR button caps perform reliably across extreme temperature ranges, from frigid -60°C outdoor winter environments to 220°C high-temperature manufacturing settings, without becoming brittle or overly soft. The material is inherently UV-stabilized and resistant to common industrial chemicals, including cleaning agents, lubricants, and weak acids, ensuring no cracking, fading, or material degradation even in direct sunlight or regular chemical exposure scenarios.
We offer full customization of hardness, actuation force, color, and marking to match specific application requirements: soft 30–40 Shore A caps are ideal for medical devices requiring tactile, low-force actuation, while 60–80 Shore A hard caps are suited for heavy-duty industrial equipment used with gloved hands. Backlit etched graphics remain visible in low-light conditions and never wear off, unlike printed markings, and conductive carbon inserts can be integrated to eliminate the need for separate contact components in the button assembly.
Widely used in PLC control panels, CNC machine interfaces, factory automation HMI (human-machine interface) devices, and heavy construction equipment controls. The wear-resistant and waterproof design withstands regular contact with oil, lubricants, and construction site dust, ensuring consistent operation in manufacturing and outdoor construction environments.
Compatible with sterilization processes, the medical-grade variant is used in surgical control panels, patient monitors, infusion pumps, and diagnostic equipment. The biocompatible LSR material is non-toxic, non-irritating to skin, and resistant to repeated disinfection with ethanol and other medical cleaning agents, meeting strict healthcare industry regulations.
Suitable for marine vessel control panels, outdoor communication base station interfaces, solar inverter controls, and electric vehicle charging stations. The UV-resistant and IP67/IP68-rated structure prevents water and salt spray corrosion, maintaining functionality even in coastal and high-humidity outdoor environments.
Used in ruggedized mobile phones, wearable industrial PDA devices, commercial kitchen equipment control panels, and public self-service kiosks. The high cycle lifespan and resistance to vandalism and frequent cleaning make the caps ideal for high-traffic public and commercial use cases.
We offer 12 standard sizes ranging from 6 mm diameter round caps to 30 mm x 20 mm rectangular caps, compatible with most common tactile switch and metal dome button assemblies. For non-standard button layouts, we provide custom molding services with a 2-week lead time for prototype samples, requiring only a 2D drawing or 3D model of your button housing for dimensional matching. Ensure the cap inner diameter is 0.1–0.2 mm smaller than the button post diameter for a tight, interference fit that prevents falling off during use.
All our Industrial Wear-resistant Waterproof LSR Button Caps are manufactured in an ISO 9001:2015 certified facility, with strict quality control checks at every production stage: incoming raw material batch testing for hardness and tensile strength, in-process dimensional inspection using coordinate measuring machines (CMM) to ensure tolerance compliance, and finished product testing for waterproof performance, press cycle lifespan, and UV resistance.
Standard products are certified to RoHS 2.0, REACH, and CE, with medical-grade variants carrying FDA and ISO 10993 biocompatibility certifications, and flame-retardant variants holding UL94 V-0 certification. We offer a 2-year warranty against material defects and manufacturing faults, with free replacement for products that fail to meet published specifications under normal use conditions. For custom orders, we provide pre-production prototype samples for customer validation before mass manufacturing, ensuring full alignment with your application requirements.
