Ceramic Fiber Gasket

A ceramic fiber gasket from Topower is made in Shandong, China. We punch or cut it from ceramic fiber cardboard. The cardboard comes from selected aluminum silicate ceramic fiber cotton, built with a wet molding process. That is why the part holds a flat, even shape and a soft surface.

The same sheet is also sold uncut as ceramic fiber paper. Thicknesses run 0.5 mm to 10 mm.

Production starts with ceramic fiber blown cotton. We crush and beat the cotton, then run a six times slag removal process to reach high-purity fiber. A diluted adhesive is added, and the mix becomes paper pulp. The pulp is vacuum-formed on a Fourdrinier wire, dried evenly by microwave, rolled, and packed into boxes.

We then punch or cut the gasket from the finished sheet. The sheet has uniform fiber distribution, high tensile strength, and good flexibility. It shows no delamination and no slag, and it can be cut at will.

The finished part is soft in texture and tear resistant. It is fire retardant and high temperature resistant, and the surface is smooth with a uniform thickness.

Our standard type covers most gasket jobs. Its classification temperature is 1260°C and its operating temperature is 1100°C or below. Continuous use temperature reaches 1000°C and short-term use temperature reaches 1260°C.

The theoretical bulk density is 180 to 200 kg/m³. Theoretical thermal conductivity is measured at a 200 kg/m³ density. At an average of 200°C it is 0.055 to 0.065 W/m.k. At 400°C it is 0.110 to 0.120 W/m.k. At 600°C it is 0.160 to 0.170 W/m.k.

High temperature line change is 1000°C x 24h at -3% or less.

The material is sealed, heat-insulated, and pressure-resistant, with good sound insulation and thermal shock resistance. Its electrical insulation and high temperature electrical insulation are higher than glass fiber. For organic liquids, acids, alkali, grease, and other chemicals, the material holds good stability, wear resistance, and durability.

When the surface first meets an open flame, the fiber carbonizes and turns black. It turns white if it keeps burning. That change does not affect its use.

Choose the standard type ceramic fiber gasket for most furnace and nozzle seats. Set the thickness from the gap you need to seal.

A gasket seals a gap. Where the joint needs a rigid layer instead, ceramic fiber board covers 1000°C to 1550°C working temperature.

The standard type is 1 to 10 mm thick. The common gasket models run 1.5 mm to 6 mm thick with a general width of 1 m.

The shape is customized as needed. We cut the gasket to your drawing or sample at the bench. The package style is carton. Minimum order is 50 rolls.

The gasket is used in these areas:

• High-temperature insulation for industrial furnaces, ladles, and immersed nozzles
• Electrical insulation and thermal insulation for industrial electric furnaces
• Sealing for expansion joints of furnace doors and furnace bodies
• Aluminum model lining
• Decoating of crystallized glass and hot-melt curved glass
• High-temperature gasket raw material
• Sound-absorbing and heat-insulating material for automobile mufflers
• Thermal insulation for exhaust pipes
• Isolation and anti-sintering material

In a gasket seat, the material is compressed and holds a seal across a joint. In an expansion joint, it takes up movement between a furnace door and the furnace body. It also works as the raw sheet for smaller punched parts. A plant can cut several gasket sizes from one carton.

Around a ladle or an immersed nozzle, it keeps heat in the lining. Where the ladle lining has to carry load, the material changes family. High alumina castable runs from 45% to 80% Al2O3.

On a furnace wall, the gasket is the small part. Ceramic fiber modules are the lining itself, in STD, HP, HZ and PC grades up to 1600°C. For pipe and duct wrap, ceramic fiber blanket runs from 64 to 160 kg/m³. The PC BLT grade reaches a 1500°C recommended working temperature.

We pack the gaskets in cartons. We pack to a safety sea-exporting standard. We load the finished material at our factory into a container. We support door to door delivery. Minimum order is 50 rolls.

Are gaskets and gasket tape the same product?
The gasket is the punched or cut part. Gasket tape is the same material supplied as a strip. Both come from the same wet-formed ceramic fiber sheet.

Which temperature can the gasket handle?
Classification temperature is 1260°C and operating temperature is 1100°C or below. Continuous use temperature reaches 1000°C and short-term use temperature reaches 1260°C.

Which thicknesses do you supply?
The standard type runs 1 to 10 mm. Common models run 1.5 mm to 6 mm with a general width of 1 m. Custom shapes are cut as needed.

Does the material resist acids and molten metals?
It has good acid and alkali corrosion resistance and resists corrosion from molten metals such as aluminum and zinc. It is non-toxic, harmless, and odorless.

What is the thermal conductivity?
At 200 kg/m³ density, the average is 0.055 to 0.065 W/m.k at 200°C. At 400°C it is 0.110 to 0.120 W/m.k. At 600°C it is 0.160 to 0.170 W/m.k.

Can I get a sample, a price, or a small order?
Yes. Minimum order is 50 rolls. Send your thickness, shape drawing, quantity, application temperature, and destination country and port, and we will return a quotation.

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