🎧 Product Overview — Listen

White Silicone Sponge Sheet is a food-safe, FDA-compliant closed-cell silicone foam rubber available in pure white for applications where hygiene, cleanliness, and colour-coded working are critical. With a continuous working temperature range of -60°C to +200°C and excellent compression set recovery, this product is specified in food processing, pharmaceutical manufacturing, medical equipment, and any application requiring traceable, cleanable sealing materials.

Technical Specifications

Property	Specification
Material	White silicone sponge (closed-cell foam)
Colour	White (food-safe pigment, no contamination risk)
Temperature Range	-60°C to +230°C continuous
Hardness (Shore OO)	20–40° (very soft and conformable)
Density	0.35–0.55 g/cm³
Compression Set	<10% (high recovery grade)
Width	1m standard
Thickness Range	3mm to 50mm
Food Contact	✅ FDA 21 CFR / EC 1935/2004 compliant
Chemical Resistance	Excellent vs steam, acids, alkalis, and cleaning agents
UV/Ozone	Fully stable — no degradation outdoors

Why White Silicone Sponge?

In food, pharmaceutical, and medical environments, colour-coding of materials helps prevent cross-contamination. White silicone sponge enables:

Visual cleanliness check — contamination or degradation is immediately visible on a white surface
Colour-coded compliance — white = dairy/non-allergen zones in many HACCP systems
Traceability — distinguishes sealing materials between departments or production lines
No colour migration — food-safe white pigments will not leach into products

Common Applications

Food Processing Equipment Seals — oven door gaskets, lid seals, chute lining, conveyor edge sealing
Pharmaceutical Autoclave Door Seals — withstands repeated steam sterilisation (134°C flash cycles)
Medical Device Gaskets — FDA compliance required for contact with medical devices or sterile processing
Bakery & Dairy Equipment — high-temp CIP (clean-in-place) compatible, no flavour or odour transfer
Laboratory Equipment — seals for incubators, ovens, and analytical equipment
Glazing Gaskets (White Aesthetic) — used in white-framed windows and light-coloured architectural applications

Cutting & Fabrication

White silicone sponge sheet cuts cleanly with a sharp utility knife, die-cutter, or water jet. Self-adhesive backing is available for gasket fabrication or direct bonding to metal housings. We can supply pre-cut strips and gasket profiles — contact us with your dimensions.

Frequently Asked Questions

Is white silicone sponge the same as grey silicone sponge?

The base compound is the same — white is simply a different pigmentation. Performance properties (temperature, compression set, density) are equivalent. White is chosen when visual inspection or colour-coding matters. Grey silicone sponge is more common in general industrial applications.

Can white silicone sponge be autoclaved?

Yes — silicone sponge is routinely used in autoclaves operating at 121–134°C. The material withstands repeated steam sterilisation cycles without degradation or dimensional change.

Does it leave marks on food contact surfaces?

No. Food-grade silicone sponge is non-marking and non-contaminating. The closed-cell structure prevents absorption of food residue and cleaning agents.

What thicknesses are available?

Standard stock: 3mm, 5mm, 6mm, 10mm, 12mm, 15mm, 20mm, 25mm. Thicker sections and custom profiles available to order.

Related Silicone & Rubber Products

Rubber Sheeting — All Compounds, Cut to Size
High Temperature Solid Silicone Sheet
Industrial Anti-Fatigue Matting

Need a non-standard grade, size, or self-adhesive backing? Contact our technical team.

Ultra-Thin Silicone Film Sheet UK — Technical Specification

Property	Value
Material	100% Silicone rubber
Thickness	20 micron (0.02mm)
Temperature Range	-60°C to +230°C
Shore A Hardness	N/A (ultra-thin film)
Colour	Translucent
Compliance	FDA compliant, food-safe grade available
Application	Gaskets, seals, mould release, medical devices

Why Choose Ultra-Thin Silicone Film?

When standard silicone sheet is too thick for precision sealing applications, ultra-thin silicone film delivers consistent performance at just 20 microns. Key benefits include:

Extreme precision sealing — ideal for tight-tolerance flanges and instrument housings
Excellent temperature resistance — stable performance from -60°C to +230°C
Chemical inertness — resistant to most acids, alkalis, and solvents at operating temperatures
Flexible and conformable — moulds to irregular surfaces without creasing
Low outgassing — suitable for vacuum and cleanroom environments
FDA compliant — food-safe and medical device applications

Common Applications

Precision instrument and electronics sealing
Medical device manufacturing gaskets
Pharmaceutical packaging lines
Aerospace and defence components
Mould release and parting film in composite manufacturing
High-purity fluid handling systems

Technical Specifications

Why White Silicone Sponge?

Common Applications

Cutting & Fabrication

Frequently Asked Questions

Is white silicone sponge the same as grey silicone sponge?

Can white silicone sponge be autoclaved?

Does it leave marks on food contact surfaces?

What thicknesses are available?

Related Silicone & Rubber Products

Ultra-Thin Silicone Film Sheet UK — Technical Specification

Why Choose Ultra-Thin Silicone Film?

Common Applications

Related Products

Sponge Sheet

White Silicone Sponge Sheet 1m Wide UK | Heat & Cold Resistant Sealing Rubber