Flange Insulation Gasket
Lightweight Mullite SeriesLightweight mullite flange insulation gaskets and spacers are specifically designed for high-temperature furnace openings, thermocouple ports, burner sleeves, and pipe flange sealing. Features tight dimensional tolerance, low thermal conductivity, and high thermal shock resistance.
| Parameter | Specification |
|---|---|
| Material | Lightweight Mullite (JM26 / JM28 / JM30) |
| Max Service Temp | 1350°C ~ 1600°C |
| Bulk Density | 0.8 ~ 1.1 g/cm³ |
| Cold Crushing Strength | ≥ 2.5 ~ 3.5 MPa |
| Thermal Conductivity (600℃) | ≤ 0.35 W/(m·K) |
| Machining Tolerance | Precision CNC machining ±0.5mm |
Material Introduction
Lightweight Mullite Flange Bricks are fabricated from high-purity mullite refractory materials through precision shaping, high-temperature sintering, and CNC post-machining.
In high-temperature kilns and thermal systems, flange connection points represent critical zones prone to heat loss and thermal stress. Mullite flange bricks provide superior thermal insulation and sealing integrity, effectively isolating extreme internal temperatures and protecting outer metal assemblies from overheating.
Product Features
- High Dimensional Precision: Precise CNC lathe and milling ensure tight circularity and flat sealing faces.
- Thermal Insulation & Low Heat Loss: Service temperature up to 1600°C with low thermal conductivity.
- Thermal Shock Stability: Resists thermal cycling and repeated furnace temperature swings without cracking.
- Chemical Corrosion Resistance: Inert to acidic/alkaline gases and reducing furnace atmospheres.
- Custom Configuration: Tailored for single ring, stepped, blind, and bolt-hole configurations.
Specification Parameters
| Index | JM26 | JM28 | JM30 |
|---|---|---|---|
| Classification Temp (℃) | 1450 | 1550 | 1600 |
| Bulk Density (g/cm³) | 0.80 | 0.90 | 1.05 |
| Cold Crushing Strength (MPa) | ≥ 2.2 | ≥ 3.0 | ≥ 3.6 |
| Al₂O₃ (%) | ≥ 56 | ≥ 68 | ≥ 73 |
| Fe₂O₃ (%) | ≤ 0.8 | ≤ 0.6 | ≤ 0.5 |
| Thermal Conductivity @ 600℃ (W/m·K) | 0.29 | 0.34 | 0.42 |
