uk head office

0845 674 4747

Silicone Engineering > Markets > LED Lighting
LED lighting banner

LED Lighting

Silicone Solutions for LED Lighting Systems

In today’s elastomer market, the range of rubbers available to lighting engineers, designers and buyers is extensive. So much so, that when analysing the list of rubber properties, it is very easy to get lost in a maze of grades, forms, specifications, thickness’s and hardness’s. 

Failure to choose the correct sealing material often leads to failure in application. This is commonly caused by water, moisture or dust ingress within electrical enclosures causing downtime and repair costs. Therefore it is vital to analyse and chose the correct materials to ensure failure is prevented.

When to Choose Silicone Rubber?

Silicone rubber excels at high temperatures and provides excellent sealing properties for LED lighting systems and electrical enclosures that are exposed to outdoor conditions.

Due to silicones’ extreme temperature resistance, chemical stability and low compression set, it is the material of choice in many LED lighting applications as it performs comfortably with high heat generated from the diodes. Silicone also has excellent environmental resistance allowing for use in outdoor applications where protection from weathering is critical for performance.

EPDM vs Silicone

Benefits of kSil™ Silicone Sheeting

  • Smooth Skin - better sealing performance
  • UL94-V0 and V1 approved grades
  • Low smoke/toxicity grades
  • Closed Cell Sponge - Low water and dust ingress
  • Low Compression Set and Deflection
  • Excellent Tear Resistance
  • Light Weight
  • Flexible - Easily Applied
  • Vibration Dampening
  • Extreme Temperature Range: +230°C to -60°C (+446°F to -76°F)
  • Weather Resistant - UV, Ozone, Frost, Rain - ideal for outdoor LED applications
  • Low out-gassing
  • IP65 and IP66 achieved (subject to design of components)


  • Rolls and Sheets - Solid and Sponge / Foam
  • Rolls: Up to 50mtrs solid and 20mtrs sponge (on selected grades and dimensions)
  • Sheets: 1m²
  • Sponge / Foam Extrusions (expanSil™)
  • Pressure Sensitive Adhesive backing (PSA)
  • Cut Gaskets
  • Joined rings
LED lighting download
LED street lightsRoad Tunnel ImageFloodlight ImageLED imageStreet sign image

Silicone Applications for LED Lighting

Silicone can be used in a number of lighting applications due to its inert and flexible properties. With many lighting systems switching to LED for energy saving benefits, designers need to consider the high heat that is often generated from the diodes.

With silicone able to withstand high temperatures up to 230°C, the switch to silicone as a sealing material has increased in demand. Below details just some of the more common uses for Silicone Engineering’s grades in the LED Lighting sector.


LED Street Lighting Gaskets

kSil™ can be used in outdoor, high powered LED street and stadium lighting to provide excellent sealing preventing water and dust ingress. Due to silicone’s flexibility it can conform to uneven surfaces ensuring a tight seal is achieved to protect the electronics within the casing.


Road Tunnel Lighting

kSil™ sheeting and expanSil™ sponge extrusions can both be applied as gaskets and seals for tunnel lighting. LED lighting allows tunnels to be well lit, increasing the visibility and safety of drivers, whilst at the same time being more energy efficient.


Outdoor Signage & Electric Displays

An increase in use of electronic signage lit by LED lighting has seen silicone being used more frequently for sealing the units. LEDs allow advertisements to stand out, especially at night giving a clearer image and message to the public. With heat generated by the lighting, silicone is well suited to cope with high temperatures as well as being resistant to weathering, protecting the unit from water ingress and failure.


Automotive Lighting

LED Lighting is becoming common place in new automotive lighting designs, which give brighter and whiter head and rear lights. Silicone gaskets are used to protect the inside from water and dust ingress which in turn prevents fogging within the casing.


Get in touch with Silicone Engineering

Want to find out more about the LED lighting market?

For more details speak to one of Silicone Engineering’s dedicated specialists.

+44 845 154 1689

or place an online enquiry 

© 2018 Silicone Engineering All rights reserved