JPGRAPHITE Graphite Machining


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Hard Carbon Felt Heat Shield

Rigid felt is a rigid insulation material with low thermal conductivity based on carbon fibers. It shows its best performance in temperatures beyond 800°C in inert gas or vacuum furnaces.

Hard Carbon Felt Heat Shield

Hard Carbon Felt Heat Shield

Stable in shape, thermal shock resistant, erosion resistant.

Rigid felt is a rigid insulation material with low thermal conductivity based on carbon fibers. It shows its best performance in temperatures beyond 800°C in inert gas or vacuum furnaces.

A carbon based bonding material locks the fibers in a rigid structure, that can be offered in plates or cylinders. Also 3D shapes are possible by our machining.

Index Domestic Viscose Based   Rigid Felt Overall Felt
Bulk Density (g/cm3) 0.25±0.05 0.2±0.02 0.16±0.03
Ash (%) <0.05 <0.03 <0.02
Compressive Strength (MPa) 2.5 1 0.8
Flexural Strength (MPa) 1.2 1.2 1
Purification Grade Standard Standard Standard
Thermal Conductivity (W/m·K) 0.15~0.35 0.1-0.25 0.1-0.25
Processing Temperature(℃) >2000℃ >2000℃ >2000℃
Carbon Content(%) >99 >99 >99


Carbon fiber rigid felt is used for vacuum furnace insulation.

Graphite insulation felt: Aerospace insulators, chemical and petrochemical, EDM, semiconductor industries, Carbon fiber hard felt, composite hard felt, vacuum furnace insulation, composite hard felt, round plate carbon felt, thermal insulation, low thermal conductivity.


Typical properties of the material


Low thermal conductivity

Thermal shock resistance

Erosion resistance


Hard Carbon Felt Heat Shield - ADVANTAGE

Rigid felt manufacturing

Rigid felt is produced by mixing and pressing of fiber material and binder, followed by high temperature treatment at temperature up to max. 2,800 °C. In the final production step the rigid felt is machined to the desired dimensions.

Also manufacturing of laminated panels with C/C or graphite foil layers as well as the application of an edge and erosion protection is possible.


JPGRAPHITE is a professional carbon graphite manufacturing company with over 20 years of experience. We have complete production processing and professional CNC equipment's and advanced tech processes to produce carbon graphite products.

We accept customized carbon graphite product orders and provide tech consulting with the product application. We mainly offer graphite crucibles, graphite rotors, graphite block, graphite plate, graphite rod, graphite heating parts, graphite pipes.

We severing industries like the Metallurgical and chemical industry, High-temperature heat treatment, glass, ceramic industry, Environmental water treatment industry, Bearing seal applications. We are a manufacturer; we do not have an extra service fee. We export our products worldwide.



Standard export carton and plywood case.

Customized shipping mark.

QC department will check in case if the packing method is safe enough or not.


Door to door service by courier like DHL , UPS etc. , usually 3 ~ 4 days to arrive.

By air to the air port, it takes about 5 ~ 7 days to arrive usually.

By sea to the sea port, it takes about 15 ~ 30 days to arrive usually.


Q1: Do you have a product catalog?

A: Yes, please send your request to, we will reply as soon as we see it.

Q2: Do you have clear product pictures?

A: Yes, friends, we can provide different detailed pictures of this product.

Q3: What is the quality of this component?

A: We are ISO9001 certified products, and 100% quality inspection is carried out on shipping.

Q4: How long does it take to make? How long does it take to ship?

A: Our production time is determined by the amount and complexity of customization. It will be shipped within 15-30 days after the production is completed (including the quality inspection time before delivery).

Q5: Can we test samples first?

A: Of course you can, but you need to pay for the sample cost and shipping costs.