Solid silicone sheeting
7 productsGeneral purpose to 300 °C, plus platinum-cured, flame-retardant, metal-detectable and conductive grades.
Made to order
Silicone & High Temperature
The right silicone for the job, specified by people who know materials.
Sheet, sponge, cord, strip, tubing, hose and inflatable seals in general purpose, high temperature, food-contact, flame-retardant and metal-detectable grades. Tell us the temperature, the application and the standard you need to meet, and our specialists will find the right material and come back to you fast.
- Matched to your temperature and standard
- Expert replies within 3 hours
- High quality, traceable grades
- Family-run since 1996
Browse the range
Choose a product family.
Every item is supplied to order, in the grade, size and finish your application needs.
Silicone sponge sheet
5 productsClosed-cell sponge in a choice of densities, plus fluorosilicone, thermally conductive and flame-retardant foams.
Silicone tubing
6 productsPlatinum and peroxide-cured tube and sleeving, including food-contact, dairy and WRAS-approved grades.
Silicone cord & strip
2 productsSolid and sponge cord and strip, in coils, cut lengths or joined into rings and frames.
Vacuum & pressure hoses
2 productsPlatinum-cured, reinforced silicone hose for food and pharmaceutical pressure and vacuum duty.
Seals, extrusions & mouldings
5 productsInflatable seals made to size, sponge extrusions, mouldings and braided or automotive hoses.
- −40 to +200°C
- General purpose silicone sheet rating
- Up to 300°C
- Continuous rating of high temperature sheet grades
- FDA · EC 1935
- Food-contact grades available across sheet, sponge, cord and tube
- 29
- Silicone product families in the range
Can't find what you need?
Tell us the application. We will find the silicone.
Not sure which grade, density or standard applies? Send us the details or call, and a specialist will come back to you within 3 hours with a recommendation, a price and lead times.
Helpful to include
- What the part does and where
- Size, drawing or sample
- Continuous and peak temperature
- Standards: food, WRAS, flame, metal-detectable
Where our silicone is used
Start with your industry.
Why specify silicone through Crystal Rubber
Expert knowledge, the highest quality materials, and fast answers.
Specialists who know silicone
Temperature, cure system, density, food contact, fire rating: our team asks the right questions and recommends the grade that will last in your application.
The highest quality materials
Grades from established manufacturers, with food-contact, WRAS and flame-retardant options and data sheets available on request.
Supplied to your size
Sheet, cut gaskets, strips, joined rings and extrusions supplied to your drawing, sample or dimensions, from a single part to production quantities.
How it works
From enquiry to delivery, with expert communication throughout.
- 1
Step 1
Tell us your requirements
Share the application, sizes, temperature and any standards the silicone must meet.
- 2
Step 2
We specify and quote
Our specialists recommend the right grade and send a clear quote with lead times.
- 3
Step 3
Fast shipping
Once you are happy, we arrange fast delivery to your site.
Expert communication throughout: one point of contact who keeps you updated at every stage.
Start your enquirySpecifying silicone
What to send us for a fast quote.
Share what you know. Our specialists will work out the rest with you.
Send us your details- 1
Form
Sheet, sponge, cord, strip, tube, extrusion, moulding, inflatable seal or cut part.
- 2
Size
Drawing (DXF or PDF) or sample, with thickness, ID/OD or cross-section and tolerances.
- 3
Temperature
Continuous and peak, and whether the part is open to air or enclosed.
- 4
Compliance
Food contact, WRAS, USP Class VI, flame rating or metal-detectable.
- 5
Media
Water, steam, oils, fuels or cleaning chemicals it will meet.
- 6
Hardness & colour
Shore A for solid grades, or sponge density.
- 7
Finish
Plain or self-adhesive, cut, joined into rings or frames.
- 8
Quantity & date
One-off, batch or call-off, and when you need it.
Choosing a grade
Which silicone suits your application?
| Grade | Choose it for | Typical uses |
|---|---|---|
| General purpose sheet | Rated −40 to +200 °C (230 °C intermittent), food-contact grade | Gaskets, seals, oven and hopper doors |
| High temperature sheet | Continuous service at 300 °C, intermittent to 315 °C | Heat sealing, dryers, heat treatment |
| Platinum-cured | No peroxide by-products, high tear strength, non-yellowing | Pharmaceutical, food and peristaltic pump tube |
| Flame retardant | Grades that meet UL 94 V-0, EN 45545-2 and BS 6853 | Rail interiors, electronics, enclosures |
| Metal detectable | Fragments show up on food-line metal detectors | Food and pharmaceutical processing seals |
| Closed-cell sponge | Seals uneven gaps with low closing force | Enclosure doors, lids, lighting |
Silicone reaches its top temperatures only with air present; in sealed, oxygen-starved joints the usable temperature is lower. Tell us the conditions and we will confirm the grade.
Everything in the range
All silicone and high temperature categories.
Standards
Silicone grades available to recognised standards.
FDA 177.2600
Grades that meet FDA 21 CFR 177.2600 for repeated food contact.
EC 1935/2004
Food-contact grades for the UK and EU, commonly shown against BfR Recommendation XV.
WRAS
WRAS-approved silicone tube materials for hot and cold potable water.
UL 94 V-0
Flame-retardant sheet and foam grades, depending on grade and thickness.
EN 45545-2
Flame-retardant grades for rail fire, smoke and toxicity requirements.
Approvals belong to the material grade. Check the individual product, or ask us to confirm it covers your application.
What our customers say
Trusted by businesses across the UK.
“Just wanted to say thanks for the excellent service you and your team have provided with this order, it is very much appreciated. Please thank all who made it possible and I look forward to giving you future orders and of course recommending your company to others. Thanks again.”
Catercool NW Ltd
Verified customer
Questions
Frequently asked.
What temperature can silicone take?
General purpose grades are rated −40 °C to +200 °C, with short excursions to about 230 °C. High temperature grades run continuously at 300 °C. Silicone needs air to reach these limits, so tell us the continuous and peak temperatures and whether the joint is enclosed.
Do you supply food-safe silicone?
Yes. Grades are available that meet FDA 21 CFR 177.2600 and EC 1935/2004, including platinum-cured and blue metal-detectable grades for food and pharmaceutical lines.
Can you supply gaskets and seals cut to my drawing?
Yes. Send a DXF or PDF drawing, dimensions or a sample. We supply cut gaskets, strips and washers, plain or self-adhesive, and can join cord or extrusions into rings and frames.
Solid or sponge silicone: which do I need?
Solid silicone suits gaskets under clamping load, pressure seals and wear. Closed-cell sponge seals uneven gaps with low closing force, such as enclosure doors, lids and light fittings. Sponge density sets how firm it feels.
Do you have flame-retardant silicone for rail or electronics?
Yes. Grades are available that meet UL 94 V-0 and rail fire standards such as EN 45545-2 and BS 6853, depending on grade and thickness. Tell us the standard and hazard level you need to meet.
Is WRAS-approved silicone available?
Yes. WRAS-approved silicone tube grades are available for hot and cold potable water. Tell us the application so we can confirm the approval covers it.
What is the minimum order, and how long does it take?
Everything is supplied to order, so we quote each job individually, with lead times on the quote. Small batches and prototypes are welcome.
Can you provide certificates and data sheets?
Certificates of conformity and material data sheets are available on request.
Talk to our experts
Can't find what you're looking for?
Not sure which grade, density or standard applies? Send us the details or call, and a specialist will come back to you within 3 hours with a recommendation, a price and lead times.
Helpful to include
- What the part does and where
- Size, drawing or sample
- Continuous and peak temperature
- Standards: food, WRAS, flame, metal-detectable