
Custom Silicone Washers Manufactured For High Temperature And Regulated Applications
Cutting Industries manufactures custom silicone washers for OEMs, engineers and industrial manufacturers requiring reliable sealing and spacing components for demanding applications, we cater to customers across the UK and Ireland.
Silicone washers are widely specified where assemblies must withstand elevated temperatures, UV exposure and environmental ageing while maintaining long term sealing performance. As a result, many engineers specify silicone within demanding industrial and regulated applications. As a UK silicone washer manufacturer, Cutting Industries supports both prototype and repeat production requirements.
We manufacture custom silicone rubber washers to customer drawing, CAD file or sample, supporting prototype development, low volume production and repeat scheduled supply. Many customers also require larger sealing components alongside washers, including custom rubber gaskets for industrial and regulated applications.
Applications commonly include:
• medical devices
• electrical enclosures
• LED lighting systems
• HVAC assemblies
• food processing equipment
• battery systems
• aerospace components
• industrial machinery
Why Engineers Specify Silicone Washers
Silicone is commonly selected where standard rubber materials may struggle with heat, environmental exposure or long term flexibility requirements.
Compared with many general purpose elastomers, silicone offers strong temperature resistance, good compression recovery and excellent UV resistance. Because of this, silicone is particularly suitable for sealing applications exposed to varying operating conditions or outdoor environments.
Silicone also provides strong electrical insulation properties, making it widely used within electronics, lighting systems and electrical assemblies.
Unlike off the shelf silicone washers, custom manufactured silicone washers can be produced to suit exact sealing, spacing and assembly requirements.
Custom Silicone Washer Manufacturing
We manufacture:
• silicone sealing washers
• silicone spacer washers
• adhesive backed silicone washers
• thin gauge silicone washers
• precision cut silicone washers
• large diameter silicone washers
Production methods include CNC knife cutting, die cutting, kiss cutting and laminating depending on material type, tolerances and production volumes.
Materials are available in multiple thicknesses, shore hardnesses and densities including standard silicone, food grade silicone, medical grade silicone and flame retardant grades.
Many silicone washer suppliers only offer standard sizes. We manufacture custom silicone washers to customer specification for both prototype and repeat production requirements.
Silicone Washer Specifications

| Specification | Capability |
|---|---|
| Material Types | Standard, food grade, medical grade, flame retardant silicone |
| Thickness Range | Various thicknesses available (Material performance data and specification guidance can also be found within our materials data sheets) |
| Hardness Range | Multiple shore hardness options |
| Colours Available | Various colours available subject to grade |
| Manufacturing Methods | CNC cutting, die cutting, kiss cutting, laminating |
| Adhesive Options | Pressure sensitive adhesive backing available |
| Supply Formats | Individual parts, sheet format, reel format |
| Production Volumes | Prototype through to repeat production |
| Documentation Support | Traceability, Certificates of Conformity, FAI support where required |
Need custom silicone washers manufactured to drawing or sample? click Click here to Contact our team and discuss material selection, tolerances and production volumes to suit your needs.
Medical Grade Silicone Washers
Medical grade silicone washers are widely used within healthcare and regulated manufacturing environments due to their material stability and resistance to environmental exposure.
Applications may include:
• diagnostic equipment
• laboratory systems
• fluid management assemblies
• electronic housings
• medical device sealing systems
Cutting Industries operates with ISO 9001 and ISO 13485 certification and can support documentation requirements including material traceability and Certificates of Conformity where required.
Learn more about our medical manufacturing capabilities for regulated production environments.
High Temperature Silicone Washers For Electrical And Lighting Applications
High temperature silicone washers are commonly specified within electrical systems, LED lighting products and electronic assemblies where insulation and thermal resistance are important.
Typical applications include enclosure sealing, vibration reduction and environmental protection within electrical equipment and lighting assemblies. In addition, silicone helps maintain flexibility across varying operating temperatures.
Silicone maintains flexibility across varying temperatures which makes it suitable for demanding operating environments where long term reliability is important.
Outdoor And Weather Resistant Silicone Washers
Silicone performs well within outdoor applications exposed to UV, ozone and moisture. Consequently, many manufacturers specify silicone washers for external sealing applications requiring long term environmental resistance.
This makes silicone washers suitable for:
• outdoor electrical enclosures
• HVAC systems
• external lighting systems
• transport applications
• infrastructure equipment
Compared with some general purpose rubber materials, silicone offers stronger long term resistance to environmental ageing and weather exposure. Silicone is also widely used for custom seals exposed to outdoor and high temperature operating conditions.
Adhesive Backed Silicone Washers
Adhesive backed silicone washers can be supplied with pressure sensitive adhesive to support assembly positioning and production efficiency.
For larger bonded sealing components, see our self adhesive gaskets manufacturing capabilities.
These components are commonly used within electronics manufacturing, lighting systems and enclosure assembly where accurate placement is important during production. Additionally, reel supplied formats can improve assembly efficiency within higher volume environments.
Components can also be supplied in sheeted or reel supplied formats using kiss cutting processes for faster assembly handling.
Choosing The Right Rubber Material For Washer Applications
| Material | Typical Advantage | Common Applications |
|---|---|---|
| Silicone | Temperature and UV resistance | Medical, electrical, lighting |
| EPDM | Weather and water resistance | Outdoor sealing |
| Nitrile | Oil and fuel resistance | Automotive and industrial |
| Neoprene | General purpose sealing | Engineering applications |
| Viton | High chemical resistance | High performance sealing |
For guidance comparing common industrial rubber materials, see our EPDM vs Nitrile gasket guide.

Why OEMs Work With Cutting Industries
Cutting Industries supports customers requiring custom manufactured sealing components with fast turnaround capability, technical manufacturing support and flexible production volumes.
We manufacture in the UK and support projects from prototype stage through to repeat scheduled supply across engineering, medical and industrial sectors. Meanwhile, our flexible production capabilities allow customers to scale from development work into repeat manufacturing.
Capabilities include:
• CNC knife cutting
• die cutting
• kiss cutting
• laminating
• adhesive application
• prototype manufacturing
• repeat production supply
Frequently Asked Questions
Can silicone washers withstand high temperatures?
Yes. Silicone is widely used within applications requiring long term performance across varying temperature conditions.
Are silicone washers suitable for outdoor use?
Yes. Silicone offers strong resistance to UV, ozone and environmental exposure which makes it suitable for outdoor sealing applications.
Can silicone washers be supplied with adhesive backing?
Yes. Pressure sensitive adhesive backing can be applied where required for assembly positioning.
Are food grade silicone washers available?
Yes. Food grade silicone materials can be supplied depending on application requirements.
Can silicone washers be manufactured to custom sizes?
Yes. We manufacture custom silicone washers to customer drawing, CAD file or sample.
Request A Silicone Washer Quote
To quote your silicone washer requirement, send:
• drawing or sample
• dimensions
• operating environment
• material specification if known
• annual usage volumes
Our team can recommend suitable silicone materials and manufacturing methods based on your application requirements.

