3mm Thick – White Silicone Sheets
3mm Thick – White Silicone Sheets
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3mm Thick – White Silicone Sheets
3mm Thick – White Silicone Sheets

White Silicone Sheets – 3mm Thickness, Various Lengths Available

Price:
£45.50

In stock, ready to ship

In stock, ready to ship

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Description

White Silicone Sheets — 3mm Thickness

A premium-grade, food-safe silicone rubber sheet engineered for precision sealing, insulation, and fabrication across a wide range of professional and industrial applications. Available in four convenient paper-format sizes, these 3mm white silicone sheets combine outstanding thermal resistance, flexibility, and durability — making them an essential material for food processing, healthcare, construction, electronics, and marine environments.

Available Sizes

Each sheet is precision-cut to a familiar paper-format size for ease of use and minimal waste. Custom sizes are available on request.

A3

297mm wide × 420mm long × 3mm thick

A4

210mm wide × 297mm long × 3mm thick

A5

148mm wide × 210mm long × 3mm thick

A6

105mm wide × 148mm long × 3mm thick

All dimensions are nominal. Tolerance: ±0.3mm on width and length. Thickness tolerance: ±0.3mm. Custom sizes available on request — please contact us for a quote.
Technical Specifications
Colour White
Thickness 3mm
Hardness 60° Shore A (± 5°)
Operating Temperature -60°C to +230°C
Density 420 kg/m³
Tensile Strength 7.9 MPa
Elongation to Failure 340%
Tear Strength 14.2 N/mm
Compression Set (24 hrs @ 150°C) 13%
Compression Set (22 hrs @ 300°C) 10%
Grade Food Grade — FDA 21 CFR 177.2600 Compliant
Texture Smooth, ductile, flexible
Tolerance (Width & Length) ± 0.3mm
Tolerance (Thickness) ± 0.3mm
Dimensions Format A3 / A4 / A5 / A6 (paper-format sizing)
Key Features
  • Food grade quality — fully compliant with FDA 21 CFR 177.2600 standards
  • Exceptional temperature resistance from -60°C to +230°C
  • Smooth, flexible, and ductile texture for easy handling and forming
  • Easily cut to shape with scissors or a craft knife — no specialist tools required
  • Excellent sealing properties at both high and low temperatures
  • Outstanding resistance to ozone, oxidation, ultraviolet light, and weathering
  • Resistant to corona discharge, cosmic radiation, and ionising radiation
  • Suitable for indoor and outdoor use in demanding environments
  • Tough and durable with long service life
Applications

These white silicone sheets are trusted across a broad spectrum of industries where hygiene, thermal performance, and material reliability are non-negotiable.

Food & Beverage ProcessingGaskets, seals, liners, and cutting surfaces in food-contact environments
Healthcare & PharmaceuticalSterile sealing, medical device fabrication, and laboratory applications
Construction & HVACThermal insulation, expansion joint seals, and duct sealing
Electronics & EnergyInsulation pads, vibration dampening, and protective sheeting
MarineHatch seals, waterproof gaskets, and corrosion-resistant liners
LightingHeat-resistant mounting pads and protective barriers
Frequently Asked Questions
Is this silicone sheet safe for direct food contact?
Yes. These sheets are food grade and fully compliant with FDA 21 CFR 177.2600, making them suitable for direct contact with food and beverages in processing and preparation environments.
Can I cut the sheet to a custom shape or size?
Absolutely. The material cuts cleanly with standard scissors or a craft knife, so you can trim it to any shape or dimension you need without specialist tools. Custom pre-cut sizes are also available on request.
What temperature range can these sheets withstand?
These sheets operate reliably from -60°C up to +230°C, making them suitable for both cryogenic and high-heat applications without degrading or losing their sealing properties.
What hardness are these silicone sheets?
The sheets have a hardness of 60° Shore A (± 5°), which provides a firm yet flexible feel — ideal for gaskets, seals, and general fabrication where a balance of rigidity and compliance is needed.
Are these sheets suitable for outdoor use?
Yes. They offer excellent resistance to UV light, ozone, oxidation, and weathering, making them well-suited to outdoor and exposed environments over extended periods.

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