Viton Fluoroelastomer Rubber Sheet
Model:KXT B400FPM
Kaxite offers complete range of Viton Fluoroelastomer Rubber Sheet, according to different requirement offers a variety of material rubber sheets, we produce all kinds of rubber products according to customer's demands. Manufacturer gaskets, etc. Rubber sheets reinforced with cloth or wire.
Kaxite KXT B400FPM Viton Fluoroelastomer Rubber Sheet (also known as FKM rubber sheet or fluorocarbon rubber sheet) is a premium-grade elastomer sheet engineered for the most demanding sealing environments. It delivers outstanding resistance to high temperature, aggressive fuels, oils, lubricants, acids, alkalis and aromatic solvents, together with excellent weathering, ozone and compression-set performance. Supplied in 1 m, 1.2 m or 1.5 m widths and a range of thicknesses, it is the material of choice for critical gaskets, linings, pads and seals in the chemical, petrochemical, automotive and energy industries.
Viton Fluoroelastomer Rubber Sheet at a Glance
| Product Name | Viton Fluoroelastomer Rubber Sheet / FKM Rubber Sheet |
| Kaxite Model | KXT B400FPM |
| Material | Fluoroelastomer (FKM / Viton®-type) |
| Colour | Black (other colours available on request) |
| Specific Gravity | 2.0 g/cm³ |
| Hardness | 70°–80° Shore A (other hardness grades available) |
| Tensile Strength | 9 MPa (min) |
| Temperature Range | −30 °C to +250 °C |
| Standard Width | 1 m, 1.2 m or 1.5 m |
| Supply Form | Sheets and rolls; also die-cut gaskets, strips and pads to drawing |
| Origin | Made in China — manufactured in Kaxite's own factory in Ningbo, Zhejiang |
What Is Viton Fluoroelastomer Rubber Sheet?
Viton is a brand name for fluoroelastomer (FKM) — a family of synthetic rubber whose polymer backbone is heavily fluorinated. This fluorine content, typically between 66% and 70%, is what gives FKM its exceptional resistance to heat, chemicals and fuels. Viton fluoroelastomer rubber sheet is FKM compounded with curing agents, fillers and processing aids, then calendered or moulded into flat sheet form for gasket cutting, lining and general sealing use.
Unlike nitrile (NBR), neoprene (CR) or EPDM rubber, FKM maintains its sealing properties at temperatures up to 250 °C and resists fluids that rapidly destroy conventional elastomers — aromatic hydrocarbons, chlorinated solvents, concentrated acids, high-octane gasoline, biodiesel, aggressive hydraulic fluids and many more. It also has excellent resistance to ozone, weathering, oxidation and compression set, which means gaskets hold their bolt load and do not harden or crack in long-term service.
In everyday purchasing language, this material is also searched as FKM rubber sheet, fluorocarbon rubber sheet, fluororubber sheet or Viton® sheet. All of them refer to the same product family covered by Kaxite model KXT B400FPM.
Key Features and Performance Benefits
Outstanding Heat Resistance
Continuous service from −30 °C to +250 °C — far higher than NBR, EPDM or neoprene — with excellent compression set at elevated temperature.
Resists Petroleum Fuels & Oils
High resistance to petrol, diesel, LPG, jet fuel, lubricating oils, hydraulic oils and greases, including high-octane and oxygenated fuels.
Broad Chemical Resistance
Excellent resistance to concentrated and diluted acids, alkalis (including oxidants), aromatic and aliphatic hydrocarbons, and halogenated solvents.
Weathering & Ozone Resistant
Not affected by ozone, UV, sunlight or atmospheric ageing — suitable for long-term outdoor and exposed installations.
Excellent Compression Set
Retains sealing force under sustained compression at high temperature — a critical property for bolted flange gaskets.
Self-Extinguishing
FKM does not support combustion, an important safety property for petrochemical, aviation and energy applications.
High Tensile & Tear Strength
9 MPa minimum tensile strength and 25 N/mm tear strength provide durable, long-lasting seals even in aggressive service.
ISO 9001 Certified Production
Manufactured under a documented quality management system with batch traceability and inspection certificates issued with every shipment.
Technical Data of Viton Fluoroelastomer Rubber Sheet
The table below shows typical values for the standard KXT B400FPM grade. Non-standard hardness, thickness and sheet sizes are available on request.
| Property | Viton / FKM Value | Test Method |
|---|---|---|
| Colour | Black, etc. | — |
| Specific gravity | 2.0 g/cm³ | ASTM D297 |
| Hardness | 70°–80° Shore A | ASTM D2240 |
| Tensile strength | 9 MPa (min) | ASTM D412 |
| Elongation at break | 150% (min) | ASTM D412 |
| Tear strength | 25 N/mm | ASTM D624 |
| Low temperature resistance | −30 °C | ASTM D1329 |
| Temperature range | −30 °C to +250 °C | ASTM D2000 |
| Standard width | 1 m, 1.2 m or 1.5 m | — |
Temperature Performance
- Continuous service: −30 °C to +250 °C
- Low temperature limit: −30 °C (ASTM D1329)
- Short-term excursions: can tolerate brief peaks above the continuous rating, but for long-term reliability keep within the rated range
Important: The temperature limits quoted above are for standard FKM grades. For
low-temperature service below −30 °C, or for continuous service above 250 °C, please contact our
technical sales team — special FKM grades, low-temperature FKM and perfluoroelastomer (FFKM)
alternatives may be more suitable.
Chemical Compatibility Guide
The table below summarizes Viton/FKM performance against common media, benchmarked against Neoprene, EPDM, Nitrile and Silicone. Use it as a first-pass selection guide — for specific process conditions, please send us the media, concentration and temperature for a precise recommendation.
| Media | Viton / FKM | Neoprene | EPDM | Nitrile | Silicone |
|---|---|---|---|---|---|
| Lubricating and fuel oils | Excellent | Good | Poor | Excellent | Fair |
| Hydraulic oils | Excellent | Good | Poor | Excellent | Fair |
| Fireproof hydraulic fluids | Excellent | Fair | Excellent | Fair | Fair |
| Vegetable oils, animal fats | Excellent | Good | Excellent | Excellent | Fair |
| Gasoline (high octane) | Excellent | Fair | Poor | Excellent | Poor |
| Kerosene | Excellent | Good | Poor | Excellent | Fair |
| Aromatic hydrocarbons | Excellent | Poor | Poor | Poor | Poor |
| Aliphatic hydrocarbons | Excellent | Fair | Poor | Excellent | Fair |
| Alcohols | Good | Good | Good | Good | Good |
| Ketones | Not recommended | Poor | Excellent | Poor | Poor |
| Halogenated solvents | Good | Poor | Poor | Poor | Poor |
| Water (>80 °C) | Good | Good | Excellent | Good | Good |
| Concentrated acids | Good | Poor | Poor | Poor | Poor |
| Diluted acids | Good | Good | Good | Good | Fair |
| Alkalis | Excellent | Good | Excellent | Good | Poor |
Key: Excellent = suitable for long-term service; Good = generally suitable; Fair = limited service, check conditions; Poor / Not recommended = do not use.
Comparative Rubber Properties
Viton/FKM sits at the premium end of the general-purpose elastomer range. The table below compares its key performance parameters against the other common rubber sheet materials Kaxite manufactures.
| Property | Neoprene | EPDM | Nitrile | Silicone | Viton | Kalrez |
|---|---|---|---|---|---|---|
| Max. continuous temp. (°C) | 105 | 150 | 121 | 204 | 250 | 316 |
| Low temperature (°C) | −50 | −54 | −25 | −85 to −125 | −30 | −8 |
| Tensile strength (MPa) | 25 | 17 | 27 | 10 | 20 | 15 |
| Hardness (Shore A) | 30–95 | 40–90 | 40–95 | 30–90 | 70–90 | 65–95 |
As the table shows, Viton/FKM offers the best balance of high-temperature resistance and chemical resistance below perfluoroelastomer (Kalrez/FFKM) level, at a far lower cost. For most aggressive chemical and high-temperature duties it is the most cost-effective choice.
Typical Applications
- Flange gaskets on pipes and tanks — cut from sheet to any size, for chemical, petrochemical and process plant pipework.
- Chemical storage, transfer and processing — sealing against acids, alkalis, solvents and aggressive process media.
- Oil and petrol applications — refineries, fuel handling, fuel dispensing and automotive fuel systems.
- Critical temperature sealing — high-temperature flanges, heat exchangers, reactors and process equipment.
- Corrosion protection — isolating steel or other equipment surfaces from aggressive media.
- Lining of pipes and tanks — protective lining where chemical resistance is essential.
- Industrial sealing gaskets or strip — die-cut, water-jet cut or slit to drawing.
- Expansion joints — flexible sealing elements in high-temperature or chemical service.
- Automotive and aerospace — fuel system, engine and exhaust-adjacent seals.
- Energy and power generation — sealing in turbines, boilers and high-temperature pipelines.
Related rubber sheet products: Rubber Sheet, Nitrile Rubber Sheet, Neoprene Rubber Sheet, Silicone Rubber Sheet, Natural Rubber Sheet, Rubber Sheet Reinforced with Cloth.
How to Choose the Right Rubber Sheet
Choosing the correct elastomer is the single most important decision in gasket specification. Use the guidance below, or send us your service conditions and our engineers will recommend a material and grade.
1. What Is the Temperature?
- Up to 105 °C — Neoprene or Nitrile is usually sufficient.
- Up to 150 °C — EPDM is a good general choice.
- Up to 204 °C — Silicone.
- Up to 250 °C — Viton/FKM.
- Above 250 °C — consider Kalrez/FFKM; contact us.
2. What Is the Media?
- Oils, fuels, hydrocarbons — Viton or Nitrile.
- Acids, alkalis, oxidants — Viton.
- Ketones, esters, amines — Viton is NOT suitable; contact us for alternatives.
- Water, steam, weather — EPDM.
3. What Hardness Is Needed?
- 70° Shore A — standard, best all-round sealing.
- Higher hardness — higher pressure, better extrusion resistance.
- Lower hardness — low bolt load, delicate flange faces.
4. What Thickness?
- 1–2 mm — smooth, well-machined flanges.
- 3 mm — general purpose, most common.
- 5–10 mm+ — rough or warped faces, pads and linings.
Rule of thumb: if the media is a solvent, fuel, oil or concentrated acid — or the
temperature exceeds 150 °C — Viton is almost always the right first choice. When in doubt, ask us:
we will not recommend a more expensive elastomer than your application requires.
Quality Assurance
Every batch of Kaxite Viton fluoroelastomer rubber sheet is produced and released under a documented quality control procedure, and our manufacturing is ISO 9001 certified:
- Incoming inspection — FKM compound is verified for hardness, specific gravity and cure state before calendering.
- In-process control — mixing, calendering temperature, sheet thickness and surface finish are monitored continuously.
- Finished goods testing — hardness (ASTM D2240), tensile strength and elongation (ASTM D412), tear strength (ASTM D624), specific gravity (ASTM D297) and low-temperature resistance (ASTM D1329).
- Batch traceability — each roll and carton carries a batch number traceable back to the raw material lot.
- Third-party testing — SGS, TÜV or other nominated laboratories can be arranged at the buyer's request.
Inspection certificates and material test reports are issued with every shipment. If your project requires a specific standard, an approved-vendor audit or a material certificate to a particular specification, please contact us before ordering so that we can prepare the documentation in advance.
Packing, Delivery and Ordering Information
| Sheet packing | Flat sheets rolled or stacked, protected with interleaving film, packed in strong export cartons or on pallets. |
| Roll packing | Wound on a core, wrapped in plastic film, then packed in cartons or wooden cases. |
| Marking | Product name, model, grade, hardness, thickness, dimensions, batch number and quantity on each package. |
| Production lead time | Typically 7–15 working days for standard specifications after order confirmation; shorter for stock items. |
| Shipping terms | FOB Ningbo / Shanghai, CIF, CFR, DDP and express delivery are all available. |
| Customisation | Custom widths, thicknesses, hardness grades, colours, die-cut gaskets, pre-slit strips and private-label packing. |
Please include the following information in your inquiry so that we can quote accurately the first time: thickness, sheet size or roll width, hardness, quantity, application media and working temperature. If you already have a drawing or datasheet, simply attach it.
Why Buy Viton Rubber Sheet from Kaxite
- We are the manufacturer, not a trader. Our compounding, calendering, cutting and packing all take place in our own facility in Ningbo, Zhejiang, China — so you get factory pricing and direct technical support.
- Full rubber sheet range under one roof. Beyond Viton/FKM we manufacture nitrile, neoprene, silicone, natural rubber and cloth-reinforced sheets, so you can consolidate your elastomer sourcing with one qualified supplier.
- Technical sales, not order-taking. Our team answers application questions — media compatibility, temperature limits, hardness selection — and will tell you honestly when a different elastomer would serve you better or more economically.
- ISO 9001 certified production. Documented quality control with batch traceability and inspection certificates issued with every shipment.
- Fast response. Inquiries are normally answered within 2 business hours during working days.
- Consistent export experience. Products are shipped worldwide with complete export documentation and packing suitable for long sea transport.
- Flexible order sizes. Both trial quantities and repeat container loads are welcome.
Frequently Asked Questions
What is Viton fluoroelastomer rubber sheet used for?
It is used for critical sealing applications where high temperature and aggressive chemicals or fuels are present. Typical uses include flange gaskets on chemical and petrochemical pipework, fuel and oil system seals, tank and pipe linings, expansion joints and any gasket duty where NBR, EPDM or neoprene would fail.
What is the difference between Viton and FKM?
Viton is a brand name owned by Chemours (formerly DuPont). FKM is the standard ASTM designation for the fluoroelastomer family. In practice, "Viton rubber sheet" and "FKM rubber sheet" describe the same product category. Kaxite supplies KXT B400FPM, a high-quality FKM compound engineered to match the performance of Viton grades for the vast majority of sealing duties.
What is the temperature range of Viton rubber sheet?
The standard grade is rated from −30 °C to +250 °C for continuous service. Below −30 °C the material hardens and loses flexibility; above 250 °C it degrades. For service outside these limits, contact us — special low-temperature FKM and perfluoroelastomer (FFKM) grades are available.
What chemicals is Viton rubber sheet NOT suitable for?
FKM has poor resistance to ketones, esters, amines and some organic acids (for example acetone, MEK, ethyl acetate, ammonia and low-molecular-weight organic acids). For these media, EPDM, silicone or FFKM may be the better choice — contact us for a recommendation.
Can you supply die-cut gaskets from Viton sheet?
Yes. We supply full sheets and rolls as standard, and can also die-cut, water-jet cut or slit the sheet to your drawing to produce finished flange gaskets, strips and pads. Simply send the drawing or dimensions with your inquiry.
Can hardness and thickness be customised?
Yes. Standard hardness is 70°–80° Shore A but other grades are available. Sheet thickness, width and length can also be customised to your requirement. Please state your specification when sending the inquiry.
What is the minimum order quantity and lead time?
We accept both trial orders and full container loads. Lead time is typically 7–15 working days for standard specifications after order confirmation. Please send your requirement and we will confirm the exact MOQ and delivery schedule for your specification.
Are you a manufacturer or a trading company?
Kaxite is a manufacturer. Ningbo Kaxite Sealing Materials Co., Ltd. operates its own production facility at No. 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang, China, where the Viton fluoroelastomer rubber sheet is compounded, calendered, cut and packed.
Ready to specify your Viton fluoroelastomer rubber sheet?
Send us your thickness, sheet size, hardness, quantity and working conditions (media and
temperature) — our technical sales team will reply within 2 business hours with a quotation and
a recommended specification.
Send Inquiry
Contact Info
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No. 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
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