Ceramic Fiber Textiles
Ceramic Fiber Packing
Code prefix CP
Ceramic fiber packing is braided from ceramic fiber yarn with glass or stainless steel reinforcement, then impregnated where a tighter seal is needed. It is used where gland temperatures rule out aramid or PTFE packing and where a graphite packing would oxidise. The braid is supplied in square section and cut into rings on site.
- Continuous
- 1000°C
- 1832 °F
- Short peak
- 1260°C
- 2300 °F
- Construction
- Wire reinforced
- CP
Spec sheets are issued against the confirmed grade, with the test method named on the report.
01 — Product description
Product description
Ceramic fiber packing is made from aluminosilicate ceramic fiber as the main raw material through spinning and weaving. Glass fiber or heat-resistant alloy wire can be added as reinforcement according to the working temperature and working conditions. Glass fiber reinforced packing has a continuous use temperature of 650°C and metal wire reinforced packing 1000°C, with a short-term tolerance temperature of up to 1260°C. The product resists splash erosion from molten aluminium and zinc.
Product parameters
| Item | Value |
|---|---|
| Color | White |
| Short-term tolerance temperature | 1260°C |
| Fiber diameter | 3~5μm |
| Aluminum oxide (Al₂O₃) | 45~48% |
| Silicon dioxide (SiO₂) | 45~55% |
| Iron(III) oxide (Fe₂O₃) | 0.7~1.2% |
| Calcium oxide, sodium chloride (CaO&NaCl) | 0.43% |
| Moisture content | |
| Organic fiber content |
Note: The above chemical composition is the composition of the ceramic fiber base material.
Ceramic Fiber Round Packing
| Item | Working Temperature (°C) | Diameter (mm) |
|---|---|---|
| Fiberglass reinforced | 650 | 6,8,10,12,14,15,16,18,20,25,30,35,40,50,60,70,80,90 |
| Metal wire reinforced | 1000 |
Ceramic Fiber Square Packing
| Fiberglass reinforced | 650 | 6x6,8x8,10x10,12x12,14x14,15x15,16x16,18x18,20x20,25x25,30x30,35x35,40x40,50x50,60x60,70x70,80x80 |
|---|
Application scope
Suitable for thermal insulation of kilns, high-temperature pipelines, and vessels; sealing of furnace doors, valves, and flanges; production of high-temperature furnace door curtains; thermal insulation protection for engines and instruments; fire-resistant cable wrapping and high-temperature protection; flue lining protection.
Working condition suitability and restrictions
Different reinforcement materials of this product correspond to different use temperatures. 1260°C is only the short-term tolerance temperature; long-term over-temperature operation is prohibited. The product can only withstand short-term splashing of molten aluminum and zinc, and cannot withstand continuous erosion or immersion by molten metal.
The product is suitable for dry static thermal insulation, sealing, and protection conditions. It is not suitable for conditions involving strong acid or alkali corrosion, long-term liquid immersion, high-speed medium erosion, high-frequency severe friction, or continuous open flame burning. The product is a passive thermal insulation protection material and does not have active fire extinguishing function.
Usage precautions
- Cutting, processing, and installation of ceramic fiber material generate fiber dust. Maintain ventilation during operation, wear dust-proof protective equipment, and dispose of waste in accordance with local environmental regulations.
- The product contains a small amount of organic fiber. Initial high-temperature use may produce carbonization and smoking, which is a normal process characteristic and does not affect product performance.
- Use temperature should be matched according to reinforcement material. Over-temperature and over-working-condition use are strictly prohibited.
- During use, regularly inspect product condition. In case of powdering, damage, shrinkage, or failure, replace promptly.
- All technical data are for reference only. Actual performance depends on usage conditions. Users should conduct their own suitability testing and comply with relevant safety regulations and standards.
02 — Characteristics
Square braid
The square section seats against the gland face and stacks into rings without rotating under the nut.
Reinforcement choice
Glass reinforcement for dielectric and lower-cost glands; stainless wire where the stem sees abrasion and pressure.
Cut rings on site
Supplied on spools or as pre-cut rings matched to the stuffing box.
03 — Typical properties
Values typical, confirm against duty
| Test item | Value | Note |
|---|---|---|
| Construction | Diagonal or interlock braid | |
| Continuous, glass | Glass reinforced | |
| Continuous, wire | Stainless reinforced | |
| Short excursion | Both reinforcement types | |
| Section | Standard sizes | |
| Impregnation | For tighter sealing |
04 — Standard sizes
| Product code | Dimensions |
|---|---|
| CP-R | Round packing, glass 650 C / metal wire 1000 C, diameter 6–90 mm |
| CP-S | Square packing, fiberglass reinforced, 650 C, 6×6 – 80×80 mm |
05 — Where it is used
- Valve stem glands
- Pump and agitator shafts
- Expansion joint packing
- Furnace door hinges
- High-temperature flanges
Service limits
- Packing is not a substitute for a mechanical seal on high-speed shafts.
- Do not overtighten; leave room for thermal expansion of the braid.
- Confirm media compatibility before use in oxidising or reducing atmospheres.
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Ceramic Fiber Packing
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