High Temperature Aluminum Silicate Ceramic Fiber Gasket 1100–1260°C

Application Scenarios – Aluminum Silicate Fiber Gasket Uses

• Aluminum Silicate Fiber Gasket in Industrial Boilers and Burners

  ✅Key Advantages

  1. High-temperature door and manway sealing
  Aluminum silicate fiber gaskets maintain sealing performance around boiler doors and inspection hatches in the 800–1100 °C operating range, reducing flue gas leakage.

  2. Reduced heat loss at openings
  Low thermal conductivity across the gasket zone can cut local surface temperature and leakage heat, contributing to measurable fuel savings over a heating season.

  3. Support for planned maintenance
  Consistent gasket quality and defined tolerances simplify door alignment and reduce the time needed to change seals during scheduled outages.

  ✅ Problem Solved

  On a biomass boiler operating 6000 hours per year, even a small gap at the door can cause visible flame leakage and hot gas escape, forcing unplanned shutdowns and increasing fuel use. By replacing worn mineral fiber strips with aluminum silicate fiber gaskets shaped to the exact door contour, operators can stabilize combustion, reduce local surface temperatures and carry out door seal changes during planned maintenance intervals rather than emergency shutdowns. The result is fewer non-scheduled stops and more predictable annual operating hours.

• Aluminum Silicate Fiber Gasket in Industrial Furnaces and Heat Treatment Lines

  ✅Key Advantages

  1. Stable furnace door sealing
  Aluminum silicate fiber gaskets support repeated opening and closing of heat treatment furnace doors while limiting hot air leakage and protecting steel frames.

  2. Improved temperature uniformity
  By reducing cold air ingress around door edges, the gaskets help maintain more consistent temperature zones, which supports uniform hardness and microstructure in treated parts.

  3. Compatibility with different furnace geometries
  Custom die-cut gaskets follow curved or stepped door outlines and can include multi-hole patterns for fixing and instrument ports.

  ✅ Problem Solved

  In a continuous heat treatment line, small temperature deviations of 10–20 °C near the door region may lead to rework or scrapped batches. After fitting door outlines with custom aluminum silicate fiber gaskets cut from defined thickness board, temperature mapping shows reduced edge temperature deviation and more stable soak conditions. This allows the plant to maintain throughput while lowering the risk of repeat runs and associated energy consumption.

• Aluminum Silicate Fiber Gasket in Waste Incineration and Environmental Systems

  ✅  Key Advantages

  1. Sealing of access covers and view ports
  Aluminum silicate fiber gaskets provide flexible sealing around inspection covers, view windows and sampling ports in incinerator and flue gas systems operating at elevated temperature.

  2. Support for emission control
  Effective sealing at doors and hatches limits raw gas escape and helps the gas-cleaning system operate at the designed flow and temperature.

  3. Service under thermal cycling
  Gaskets withstand frequent thermal cycles during start-up and shutdown, maintaining contact despite expansion and contraction of steel structures.

  ✅  Problem Solved

  A waste-to-energy plant with frequent start-stop cycles experienced visible fume leakage at several access doors, complicating local working conditions and inspections. After replacing aged packing with aluminum silicate fiber gaskets cut to the current door flange pattern, leakage was significantly reduced, door closing forces became more uniform, and inspection windows could be sealed again without additional sealing paste. This improved local air quality and made periodic inspections easier to schedule.

Usage Guide – Aluminum Silicate Fiber Gasket Installation and Maintenance

• Installation

  1. Check that the contact surfaces of doors, flanges and frames are clean, dry and free of sharp burrs before placing the aluminum silicate fiber gasket.
  2. Align the gasket with bolt holes or locating pins and avoid stretching or folding the material while positioning.
  3. Tighten bolts or clamps in a cross pattern in several steps to compress the gasket evenly across the sealing surface.
  4. For adhesive-backed gaskets, apply to the fixed side first (door leaf or frame), press along the full length and allow the adhesive to bond before closing the door fully.

• Operation

  1. After the first heat-up cycle, check bolt torque or clamp force and make small adjustments if necessary to compensate for initial compression.
  2. During routine inspections, look for signs of edge erosion, excessive dusting or clear imprint loss that may indicate the need for replacement.
  3. Avoid slamming doors or applying point impacts to the gasket area, as this may damage the fiber structure and reduce sealing performance.

• Storage

  1. Store aluminum silicate fiber gaskets in closed cartons in a dry, ventilated area away from water, oil and direct sunlight.
  2. Keep products flat or supported to avoid permanent bending of large frames or strips.
  3. Do not place heavy objects on packed gaskets to prevent unwanted compression before installation.

• Cleaning

  1. When removing old gaskets, use soft brushes or vacuum equipment with proper filtration to collect loose dust from the seating surfaces.
  2. Do not use high-pressure water on unprotected ceramic fiber surfaces inside the equipment, as this can introduce moisture and residues.
  3. For gasket stock in the workshop, clean dust from surfaces with a dry cloth or low-pressure air in a controlled area.

• Common Misuse Points and Fixes

  1. Over-tightening bolts
  Problem: Excessive compression may crush the aluminum silicate fiber gasket and reduce recovery, shortening service life.
  Fix: Use recommended torque ranges for the flange or door design and tighten in multiple small steps rather than a single large adjustment.

  2. Re-using heavily compressed gaskets
  Problem: Re-used gaskets may no longer fill surface irregularities, leading to local leakage and hot spots.
  Fix: Replace the aluminum silicate fiber gasket whenever it shows visible damage, deep compression marks or loss of elasticity after disassembly.

  3. Using the wrong temperature or thickness grade
  Problem: A gasket with insufficient classification temperature or incorrect thickness may shrink or crack under service conditions.
  Fix: Confirm expected metal temperature and required compression range when selecting the aluminum silicate fiber gasket, and coordinate with the supplier on grade and thickness selection.

FAQ – Aluminum Silicate Ceramic Fiber Gasket

1. Q: What temperature can an aluminum silicate fiber gasket withstand?
   A: Typical aluminum silicate fiber gaskets are based on materials with classification temperatures of 1100–1260 °C; the recommended continuous metal temperature at the gasket contact zone is usually lower and should be selected according to the specific grade.
2. Q: Where are aluminum silicate fiber gaskets most often used?
   A: They are commonly used for boiler door gaskets, burner block seals, inspection hatch gaskets, furnace door frames, incinerator access covers and low-pressure hot gas duct flanges.
3. Q: Can aluminum silicate fiber gaskets replace graphite or rubber gaskets?
   A: For low-pressure, high-temperature applications where insulation and thermal shock resistance are important, aluminum silicate fiber gaskets can be an alternative to graphite or elastomer gaskets. For high-pressure pipelines or liquid media, other gasket types are generally preferred.
4. Q: What shapes are available for aluminum silicate fiber gaskets?
   A: Standard forms include rings, rectangular frames, strips, simple plates and multi-hole patterns for flanges and doors. Custom outlines and internal cut-outs can be produced from drawings or CAD files.
5. Q: Can aluminum silicate fiber gaskets be cut on site?
   A: Thin aluminum silicate fiber paper gaskets can be trimmed on site with suitable cutting tools for emergency adjustments, but factory-cut parts provide better repeatability and cleaner edges for long-term use.
6. Q: How long does an aluminum silicate fiber gasket typically last in service?
   A: Service life depends on temperature, cycling frequency, mechanical load and how often doors are opened. Under stable operating conditions, gaskets can often be kept until the next scheduled maintenance or major outage when doors are opened and inspected.

Customer Reviews – Aluminum Silicate Fiber Gasket

• ⭐️⭐️⭐️⭐️⭐️
  Our furnace OEM required custom-shaped aluminum silicate fiber gaskets with a complex hole pattern. Working directly with the ADCERAX factory, we were able to match the drawing tolerances and receive pre-packed gasket sets per furnace, which simplified our installation work.
  -- Laura Kim, Procurement Engineer, ADCERAX Industrial Ceramics Customer, South Korea
• ⭐️⭐️⭐️⭐️⭐️
  We use aluminum silicate fiber gaskets on several heat treatment furnace doors. The combination of defined thickness, stable compression and clean cut edges has helped to keep door adjustments within a narrow range across different units.
  -- Daniel Ruiz, Operations Supervisor, Thermal Process Equipment OEM
• ⭐️⭐️⭐️⭐️⭐️
  Our customers often need small batches of custom ceramic fiber gaskets for repairs. By sourcing aluminum silicate fiber gaskets in mixed sizes from an OEM-focused supplier, we can respond quickly to enquiries while keeping our own stock structure under control.
  -- Sophie Meyer, Purchasing Manager, Regional Refractory and Insulation Distributor
• ⭐️⭐️⭐️⭐️⭐️
  We switched the main boiler door seals to aluminum silicate fiber gaskets and matched them to our existing door frames. The new gaskets compress evenly, doors close more consistently and we have seen fewer hot spots around the access area during inspections.
  -- Michael Turner, Maintenance Manager, NorthRiver Biomass Power Plant