Name: Silicone Rubber Sheet Price in Pakistan | Al-Hamd Traders
Price: 3800 PKR
Availability: InStock

Overview

Silicone rubber sheet is the elastomer you specify when the temperature range or the hygiene requirement rules out ordinary rubber. It stays flexible from about −60°C right up to +230°C continuous — a span no other common rubber comes close to — and it is available in food-grade and platinum-cured formulations for direct product contact in food, dairy and pharmaceutical processing.

It is also exceptionally stable outdoors. Where natural rubber and NBR harden, crack and perish under UV, ozone and weathering, silicone simply does not age in the same way. That, plus its physiological inertness (it is odourless, tasteless and does not leach), is why it dominates hygienic processing and high-temperature gasketing.

Two things silicone is emphatically not good at, and both catch people out. First, oil and fuel resistance is poor — the exact opposite of nitrile rubber. Fitting silicone to an oil line because "it is the premium rubber" is a genuine and common mistake; NBR is the correct material there and it costs less. Second, mechanical strength and abrasion resistance are low. Silicone tears comparatively easily and will not survive a wear or high-load application. You buy silicone for its temperature range and its food compliance, not for toughness.

For a direct side-by-side with the other rubber grades we supply, see our Silicone vs NBR vs EPDM comparison guide.

Specifications

Typical properties for commercial and food-grade silicone rubber sheet. Hardness, tensile strength and colour vary by grade — tell us the duty and we will confirm the right one.

Property	Value	Test Standard
Material	Silicone rubber (VMQ), sheet	—
Continuous Temperature Range	−60°C to +230°C	—
Short-Term Peak	up to ~280°C (brief excursions)	—
Hardness Range	Shore A 40 – 80 (60° typical)	ASTM D2240
Tensile Strength	~5 – 10 MPa (low — see limitations)	ASTM D412
Elongation at Break	~200 – 500%	ASTM D412
Compression Set	Low — excellent long-term sealing recovery	ASTM D395
Weather / Ozone / UV Resistance	Outstanding	ASTM D1171
Oil & Fuel Resistance	Poor — use NBR instead	—
Abrasion Resistance	Poor — not for wear duty	—
Steam Resistance	Good — suits CIP/SIP cycling	—
Electrical Insulation	Excellent dielectric properties	—
Physiological Inertness	Odourless, tasteless, non-toxic	—
Food Contact Grades	Food-grade and platinum-cured available	FDA 21 CFR 177.2600
Thickness Range	1 mm – 10 mm	—
Standard Sheet Size	1000 × 1000 mm / 1.2 m wide roll	—
Colours	Red, translucent, white (food grade); others to order	—

Properties in Detail

Thermal Properties

Continuous Range: −60°C to +230°C
Short-Term Peak: up to ~280°C
vs NBR: Far wider (NBR: ~−30°C to +100°C)
vs EPDM: Wider (EPDM: to ~150°C)
Steam / CIP: Good — tolerates repeated sterilisation cycles

Mechanical Properties

Hardness: Shore A 40 – 80
Tensile Strength: ~5 – 10 MPa (low)
Elongation: ~200 – 500%
Compression Set: Low — a real strength
Abrasion Resistance: Poor — not a wear material
Tear Strength: Low — handle and design accordingly

Chemical & Hygiene

Weather / Ozone / UV: Outstanding
Oils & Fuels: Poor — use NBR
Solvents: Poor
Food Contact: Food-grade & platinum-cured available
Extractables: Platinum-cured gives the cleanest profile

Manufacturing

Silicone rubber is a synthetic elastomer built on a silicon-oxygen backbone rather than the carbon-carbon backbone of conventional rubbers. That is the fundamental reason for its behaviour: the Si–O bond is far more thermally and chemically stable than a C–C bond, which is why silicone tolerates such a wide temperature range and simply does not perish under UV and ozone the way natural rubber and NBR do.

It is supplied in two cure systems, and the difference matters in hygienic applications. Peroxide-cured silicone is the standard, economical route and is perfectly suitable for general industrial and many food applications. Platinum-cured silicone uses a different catalyst that leaves behind far fewer reaction by-products, giving a markedly cleaner extractables and leachables profile. This is why platinum-cured silicone is the grade specified for pharmaceutical and high-purity processing, where anything that could migrate into product is a compliance problem.

If your application is pharmaceutical, high-purity or a sensitive food product, ask for platinum-cured specifically — it is not the default, and the two look identical.

Thickness & Sheet Sizes

Standard silicone sheet stock. Available in commercial and food-grade formulations, and in a range of hardnesses (Shore A 40–80).

Thickness	Sheet / Roll Size	Typical Use
1 mm	1000 × 1000 mm / 1.2 m roll	Thin gaskets, diaphragms, seals
1.5 mm	1000 × 1000 mm / 1.2 m roll	Gaskets, oven door seals
2 mm	1000 × 1000 mm / 1.2 m roll	General gasketing
3 mm	1000 × 1000 mm / 1.2 m roll	Flange gaskets, hatch seals
4 mm	1000 × 1000 mm / 1.2 m roll	Heavier gaskets
5 mm	1000 × 1000 mm / 1.2 m roll	Cover seals, cushioning
6 mm	1000 × 1000 mm / 1.2 m roll	Heavy gaskets, pads
8 mm	To order	Heavy duty sealing
10 mm	To order	Heavy duty sealing

Cut gaskets, strips and profiles are available to order — send us your dimensions or a drawing. Specify food-grade or platinum-cured explicitly if the application requires it.

Chemical Resistance

Silicone’s chemical profile is almost the mirror image of NBR: outstanding against weather, ozone and heat, but poor against oils, fuels and solvents. Choosing between them on the wrong property is the most common rubber sheet mistake.

Medium	Resistance	Notes
Weather / Ozone / UV	Excellent	Outstanding — does not perish or crack outdoors
Hot Air & Dry Heat	Excellent	Up to 230°C continuous
Steam & Hot Water	Good	Tolerates repeated CIP/SIP cycles
Water	Good	Suitable
Dilute Acids & Alkalis	Fair	Limited — confirm concentration
Alcohols	Fair	Moderate resistance
Mineral Oils & Fuels	Poor	Use NBR instead — silicone swells and degrades
Aromatic / Ketone Solvents	Poor	Attacked — use PTFE for solvent duty
Concentrated Acids	Poor	Not recommended

General guidance for the material family at normal industrial concentrations. See the full Chemical Compatibility Chart, and confirm your exact chemical, concentration and temperature with us before final selection.

Applications

Silicone is specified for temperature range and food compliance — not for toughness or oil resistance.

Food & Dairy Gaskets Food-grade silicone gaskets on tanks, pasteurisers, ovens and processing equipment. It is physiologically inert — odourless, tasteless and non-leaching — and tolerates the repeated hot CIP/SIP cycles that dairy and food plants run daily.

Pharmaceutical & Hygienic Seals Platinum-cured silicone gives the cleanest extractables and leachables profile, which is why it is the grade specified for pharmaceutical product contact and high-purity processing. Ask for it explicitly — peroxide-cured is the default.

Oven & Autoclave Door Seals High-temperature door and hatch seals on ovens, autoclaves and heat-treatment equipment, where ordinary rubber would harden and fail. Its low compression set means it keeps sealing over many cycles.

Outdoor & Weather Seals Enclosure, panel and equipment seals exposed to sun and weather. Silicone does not perish, crack or chalk under UV and ozone the way natural rubber and NBR do.

Electrical Insulation Gaskets Excellent dielectric properties combined with heat resistance make silicone a natural choice for gaskets and barriers in electrical enclosures and hot instrumentation.

Cryogenic & Low-Temperature Seals Stays flexible down to about −60°C, where most rubbers have gone hard and brittle — useful for freezer, cold-room and low-temperature equipment seals.

Industries

Why Silicone Rubber Sheet is specified in each of the industries we serve.

Food & Beverage Processing

Food processing puts two demands on a gasket that pull in opposite directions: it must be hygienic and non-contaminating in contact with product, and it must survive frequent, aggressive clean-in-place cycles of hot caustic and acid wash. Food-grade silicone rubber sheet does both. It is physiologically inert — odourless, tasteless and non-leaching — so it will not taint product, and its temperature range comfortably spans the hot CIP cycles that would harden and crack an ordinary rubber gasket within a season. Its low compression set means it keeps sealing across many cycles rather than taking a permanent set and starting to weep. The one thing to be disciplined about is the grade: a standard industrial silicone sheet is chemically similar but does not carry food-contact certification, and on an audit that distinction matters. Specify food-grade explicitly.

Pharmaceutical Manufacturing

In pharmaceutical manufacturing a gasket choice is a compliance decision as much as an engineering one, and the relevant question is not just "will it seal" but "what could migrate out of it into the product". This is precisely where platinum-cured silicone earns its place. Because the platinum cure system leaves far fewer reaction by-products than a conventional peroxide cure, it gives a markedly cleaner extractables and leachables profile — which is what regulators and quality teams actually scrutinise. It also withstands repeated SIP sterilisation cycles without degrading. The practical warning is simple: platinum-cured is not the default grade, it looks identical to peroxide-cured silicone, and it costs more. If your application is product-contact pharmaceutical or high-purity, you must specify it explicitly rather than assuming that "silicone" means the right silicone.

HVAC & Building Services

Silicone earns its place in building services on two properties: temperature range and weather resistance. Rooftop plant, external enclosures, ducting seals and equipment exposed to sun and rain will destroy natural rubber and NBR over a few seasons — those materials chalk, harden and crack under UV and ozone. Silicone simply does not age that way, so an outdoor gasket in silicone lasts far longer and the replacement cycle stops being a maintenance item. It also handles hot air ducting and heating equipment seals that would exceed the ~100°C ceiling of nitrile. The counter-case is worth stating too: for anything involving oil, fuel or hydraulic fluid — compressor seals, oil lines — silicone is the wrong material and NBR is both better and cheaper. Match the material to the actual exposure, not to a general sense of quality.

General Manufacturing & Electrical

Across general industry, silicone sheet is bought for the jobs ordinary rubber cannot do: oven and autoclave door seals, hot equipment gaskets, high-temperature hatch and cover seals, and electrical enclosure gaskets where its excellent dielectric properties are combined with heat resistance in a single material. Its low compression set is a genuinely useful property in any of these — the seal keeps recovering and keeps sealing across repeated cycles rather than flattening out and starting to leak. What it must not be asked to do is take mechanical punishment. Silicone has low tensile and tear strength and poor abrasion resistance; it is not a wear material, not a heavy-load material, and it will tear where a tougher rubber would survive. If the gasket is going to be scraped, dragged, or heavily loaded, choose a different material and keep silicone for the thermal and hygienic duties it is genuinely excellent at.

Silicone vs Other Rubber Sheets

These three rubbers each resist a different threat. Choosing on the wrong property — especially putting silicone on an oil line — is the most common and most expensive rubber sheet mistake.

Property	Silicone	NBR (Nitrile)	EPDM	PTFE Sheet
Temperature Range	−60°C to +230°C	−30°C to +100°C	to ~150°C	−180°C to +260°C
Oil & Fuel Resistance	Poor	Excellent	Poor	Excellent
Weather / Ozone / UV	Outstanding	Poor	Excellent	Excellent
Steam / Hot Water	Good	Fair	Good	Excellent
Solvent Resistance	Poor	Poor	Poor	Excellent
Mechanical Strength	Low	Good	Good	Low (creeps)
Abrasion Resistance	Poor	Good	Good	Fair
Food Grade Available	Yes (incl. platinum-cured)	No	No	Yes (FDA)
Relative Cost	Medium–High	Low	Low–Medium	High
Choose It For	Extreme temp, food, outdoor	Oil & fuel	Weather, water, steam	Aggressive chemicals

Advantages & Limitations

Advantages

The widest continuous temperature range of any common rubber: −60°C to +230°C.
Outstanding resistance to weather, ozone and UV — it does not perish, chalk or crack outdoors.
Food-grade and platinum-cured grades available for direct product contact.
Physiologically inert: odourless, tasteless, non-toxic and non-leaching.
Low compression set — keeps recovering and keeps sealing over many cycles.
Excellent electrical/dielectric insulating properties.
Tolerates repeated hot CIP and SIP sterilisation cycles without degrading.
Available in a wide hardness range (Shore A 40–80) and in translucent grades for visual inspection.

Limitations

Poor oil and fuel resistance — the exact opposite of NBR. Silicone swells and degrades in mineral oil. Do not use it on oil, fuel or hydraulic lines; NBR is the correct material and costs less.
Low mechanical strength. Tensile and tear strength are low; silicone tears comparatively easily. It is not a structural or heavily-loaded sealing material.
Poor abrasion resistance — not suitable for any wear or sliding duty.
Attacked by aromatic and ketone solvents — use PTFE for solvent service.
More expensive than NBR or EPDM — only justified where the temperature range or food compliance genuinely requires it.
Platinum-cured (pharmaceutical) grade must be specified explicitly — peroxide-cured is the default and looks identical.

Installation, Storage & Maintenance

Installation

Cut gaskets cleanly with a sharp blade or die — silicone tears easily, and a ragged edge is where a gasket will start to fail. Do not over-tighten: silicone is soft and low in tensile strength, and excessive bolt load will crush and extrude it rather than improve the seal. Tighten flange bolts in a star pattern in stages. Avoid dragging or scraping the gasket into place over sharp flange edges, as its poor tear strength makes it easy to damage during fitting. For food and pharmaceutical installations, handle with clean gloves to avoid contaminating a product-contact surface.

Storage

Store flat, dry and out of direct sunlight in the original packaging. Silicone is exceptionally stable and has a long shelf life — it does not perish the way natural rubber does — but keep it away from oils and solvents in storage, which will degrade it. Keep food-grade and platinum-cured sheet clearly separated and identified from standard industrial stock, so the wrong grade cannot be cut for a product-contact joint by mistake.

Maintenance

Silicone gaskets are long-lived provided they are not asked to do a job they are unsuited to. In food and pharmaceutical service, replace product-contact seals on a fixed schedule tied to CIP cycle count rather than waiting for visible degradation — by the time wear is visible, the seal may already have become a bacterial harbourage point. In general industrial service, inspect for tearing, nicks and cuts (its main failure mode) and for swelling, which is the classic sign that it has been exposed to oil and is the wrong material for that line.

Buying Guide

What to tell us so we quote the right grade first time.

What is the temperature range? This is usually the reason to choose silicone. If your duty sits comfortably between −30°C and +100°C, NBR will do the job for less money. Silicone earns its cost outside that band.
Is there ANY oil or fuel contact? Critical question. If yes, silicone is the wrong material — it swells and degrades. Tell us and we will supply NBR instead.
Is it food or pharmaceutical product contact? If yes, you need a food-grade grade. For pharmaceutical or high-purity work, you specifically need platinum-cured — say so explicitly, because peroxide-cured is the default and looks identical.
Hardness (Shore A). We supply 40–80 Shore A. Softer conforms better to an imperfect sealing face; harder resists extrusion under bolt load. 60° is the usual general-purpose choice.
Thickness and sheet size. From 1 mm to 10 mm. Thinner gaskets seal better where the flange faces are good.
Will it be mechanically loaded or abraded? If so, silicone is likely the wrong choice — its tear and abrasion resistance are poor. Tell us the mechanical duty and we will advise.

Standards & Compliance

FDA 21 CFR 177.2600 — rubber articles intended for repeated food contact (applies to certified food-grade silicone only).
ASTM D2240 — durometer hardness. ASTM D412 — tensile strength and elongation. ASTM D395 — compression set.
Platinum-cured grades are specified where a clean extractables and leachables profile is required (pharmaceutical and high-purity processing). USP Class VI documentation available on request for applicable grades.
3-A sanitary standards may apply to dairy and hygienic processing equipment — tell us if you need compliance documentation for audit.
Certificates of conformity and food-grade documentation available on request — request them at the point of order.

Downloads

Product Datasheet (PDF) Specifications, applications and industries served.

Need a drawing or a specific size? Send your requirement on WhatsApp and we will confirm what is achievable in this material.

Frequently Asked Questions

What temperature range does silicone rubber handle?

−60°C to +230°C continuously, with brief peaks to around 280°C. That is the widest range of any common rubber — NBR manages roughly −30°C to +100°C by comparison.

Can I use silicone for oil or fuel?

No. This is the single most common mistake with silicone. Its oil and fuel resistance is poor — it swells and degrades. NBR (nitrile) is the correct material for oil and fuel, and it is cheaper. Do not choose silicone because it feels like the premium option.

Silicone vs NBR — which do I need?

Ask what the gasket is actually exposed to. Oil, fuel or hydraulic fluid → NBR. Extreme temperature, weather/UV, or food contact → silicone. They are almost mirror images of each other, and each is the wrong choice for the other’s duty.

Is silicone rubber food-safe?

Food-grade silicone is, and it is widely used in food and dairy processing — it is physiologically inert, odourless, tasteless and non-leaching. But standard industrial silicone is not certified for food contact. You must specify food-grade explicitly.

What is platinum-cured silicone?

A different cure system that leaves far fewer reaction by-products, giving a much cleaner extractables and leachables profile. It is the grade specified for pharmaceutical and high-purity product contact. It looks identical to standard peroxide-cured silicone, so you have to ask for it by name.

Do I need platinum-cured or is food-grade enough?

For most food and dairy work, food-grade peroxide-cured silicone is fine. For pharmaceutical product contact, high-purity processing, or sensitive products where extractables are scrutinised, specify platinum-cured.

Is silicone strong?

No — and this is important to understand. Its tensile and tear strength are low, and its abrasion resistance is poor. Silicone tears comparatively easily. You buy it for temperature range and hygiene, not for toughness. If the gasket will be mechanically loaded, scraped or abraded, choose a different material.

Can silicone be used outdoors?

Yes — it is outstanding outdoors. It resists UV, ozone and weathering far better than natural rubber or NBR, which chalk, harden and crack after a few seasons in the sun. Silicone simply does not age that way.

Does silicone handle steam and CIP cycles?

Yes. It tolerates repeated hot clean-in-place and sterilise-in-place cycles without degrading, which is exactly why it is used so widely in dairy, food and pharmaceutical plants that wash down several times a day.

What hardness should I choose?

We supply Shore A 40 to 80. Softer (40–50) conforms better to an imperfect or rough sealing face. Harder (70–80) resists extrusion under higher bolt load. Around 60° Shore A is the usual general-purpose choice.

What is compression set, and why does it matter?

It measures how much a rubber stays permanently squashed after being compressed. Silicone has a low compression set, meaning it keeps springing back and keeps sealing over many cycles rather than flattening out and starting to weep. It is one of silicone’s genuine strengths.

What thicknesses do you supply?

From 1 mm to 10 mm, in 1000 × 1000 mm sheets or 1.2 m wide rolls. Cut gaskets, strips and profiles are available to order.

What colours is it available in?

Red, translucent and white (food grade) are standard, with other colours to order. Translucent grades are often preferred in food plants because they make visual inspection for residue or degradation easier.

Can silicone handle solvents?

No — aromatic and ketone solvents attack it. For solvent service you need PTFE sheet, which is chemically inert across the board.

Can silicone handle acids and alkalis?

Only dilute ones, and only moderately. Concentrated acids are not recommended. If aggressive chemistry is the main problem, PTFE is the correct material.

Is silicone a good electrical insulator?

Yes, excellent — it has very good dielectric properties. Combined with its heat resistance, that makes it a natural choice for gaskets in electrical enclosures and hot instrumentation.

How long does silicone rubber last?

A very long time, provided it is used within its limits. It does not perish or harden with age the way natural rubber does. Its failure modes are mechanical (tearing) or misapplication (swelling from oil contact) rather than ageing.

What does it mean if my silicone gasket has swollen?

Almost certainly oil contact. Swelling is the classic sign that silicone has been fitted to a line carrying oil, fuel or hydraulic fluid — which it cannot tolerate. Replace it with NBR.

How should I store silicone sheet?

Flat, dry and out of direct sunlight. It has a long, stable shelf life. Keep it away from oils and solvents, and keep food-grade or platinum-cured stock clearly separated from industrial stock so the wrong grade cannot be cut for a product-contact joint.

Can you cut gaskets to my drawing?

Yes — send us a drawing, template or flange dimensions and we will cut them. Tell us if it is a food or pharmaceutical application so we cut from the correct certified grade.

Silicone Rubber Sheet