Alumina Ceramic Seal Ring
- MSJ/AL-017
- Alumina ceramic
- customized
- 10 pcs per type
- industrial applications
Mascera provides high-performance alumina ceramic seal rings engineered for long-lasting sealing in high-temperature, corrosive, and high-speed environments. These components are part of our advanced ceramic mechanical seal solutions and are widely used in pumps, compressors, and rotating equipment across chemical, fluid, and semiconductor industries.
Any inquiry please email info@mascera-tec.com or call +86 13860446139
Product detail
Mascera provides high-performance alumina ceramic seal rings engineered for long-lasting sealing in high-temperature, corrosive, and high-speed environments. These components are part of our advanced ceramic mechanical seal solutions and are widely used in pumps, compressors, and rotating equipment across chemical, fluid, and semiconductor industries.
Made from high-purity alumina (95%–99.8%), our ceramic shaft seals offer exceptional wear resistance, chemical stability, and thermal endurance, making them ideal for critical applications where traditional metal seals often fail.
Main properties
Outstanding hardness and wear resistance
Suitable for continuous rotation and friction environments.
Excellent corrosion resistance
Withstands acids, alkalis, solvents, and seawater.
High thermal stability
Reliable performance at temperatures up to 1750°C.
Electrical insulation
Prevents current leakage and galvanic corrosion.
Why Choose Ceramic Seals over Metal Seals?
Compared to metal seals, alumina ceramic seal rings deliver superior hardness and wear life, better resistance to corrosion, and reliable operation at much higher temperatures. As part of a ceramic mechanical seal, these components offer electrical insulation and stable performance under harsh working conditions. While metal seals are more ductile, ceramic seals are preferred in demanding environments where durability, stability, and chemical inertness are critical.
Custom Ceramic Parts Capabilities
Mascera offers full customization of ceramic shaft seals and other custom ceramic parts based on your design:
Various ring geometries (flat, stepped, grooved)
Surface lapping and polishing
Precision holes, notches, and chamfers
Typical applications
Mechanical seal systems for pumps and agitators
Shaft sealing in chemical reactors and mixers
Vacuum chambers and semiconductor equipment
Corrosion-resistant sealing in fluid handling systems
Material Data Sheet
Item | Unit | 95% Al2O3 | 99% Al2O3 | 99.5% Al2O3 | 99.8% Al2O3 |
Purity | % | 95 | 99 | 99.5 | 99.8 |
Color | - | White/Pink | Ivory | Ivory | Ivory |
Density | g/cm3 | 3.65 | 3.85 | 3.90 | 3.92 |
HV Hardness | - | >1300 | 1700 | 1750 | 1800 |
Fracture Toughness | Mpa.m1/2 | 3-4 | 3-4 | 4 | 4 |
Young’s modulus | Gpa | 320 | 340 | 370 | 390 |
Flexural Strength @25℃ | Mpa | 300 | 330 | 375 | 390 |
Compressive Strength@25℃ | Mpa | 2200 | 2350 | 2450 | 2500 |
Thermal Conductivity@25℃ | W/m.k | 18-22 | 27 | 29 | 32 |
Thermal Expansion Coefficient (25-1000℃) | 10-6mm/℃ | 8 | 8 | 8 | 8 |
Thermal Shock Resistance | △T(℃) | 220 | 180-200 | 180-200 | 180-200 |
| Max. Working Temperature | ℃ | 1500 | 1650 | 1700 | 1700 |
Dielectric Strength | kv/mm | 16 | 20 | 22 | 22 |
Electrical Resistivity@25℃ | Ω.cm | 1014 | 1014 | 1014 | 1014 |
Dielectric Constant (@1MHz, 25℃) | - | 9 | 9.7 | 9.7 | 9.8 |
Dielectric Loss | - | 0.0004 | 0.0002 | 0.0002 | 0.0001 |
Packing & Shipment
| Package type | carton box with foam protection |
| Payment terms | TT / Western Union / Paypal 50% payment in advanced and 50% before shipment |
| Loading port | Xiamen, China |
| Shipping way | By sea / air / door-to-door express |
