SSiC Sealing Rings

At Semixlab, our SSiC Sealing Rings represent a cornerstone of high-performance sealing technology engineered for the stringent requirements of modern semiconductor fabrication. Manufactured from fully dense, high-purity sintered silicon carbide, these sealing components provide exceptional chemical stability, thermal endurance, and mechanical strength across the most demanding vacuum, high-temperature, and corrosive gas environments. With rich engineering experience in front-end wafer processing, we design SSiC sealing solutions that enhance process stability, extend equipment lifetime, and protect device yield in advanced semiconductor nodes.

Within epitaxy (Epi) processes, where wafers are exposed to hydrogen-rich atmospheres, aggressive chlorinated chemistries, and temperatures exceeding 1200°C, SSiC Sealing Rings play a critical role in maintaining airtight separation between the reactive chamber space and surrounding mechanical assemblies. Their ultra-low porosity and unrivaled corrosion resistance ensure long-term gas integrity within the reactor, preventing leakage, contamination, and parasitic reactions that could compromise film uniformity or dopant precision. In rotating susceptor systems, the superior wear resistance and dimensional stability of SSiC enable smooth, particle-free operation through continuous thermal cycling, supporting the production of high-quality Si, SiGe, SiC, and GaN epitaxial layers.

In ALD, CVD, PECVD, and LPCVD platforms, SSiC Sealing Rings serve as primary chamber seals, isolation rings, and plasma-exposed structural components that must withstand halogen-based precursors, plasma erosion, and repeated pump-down cycles. Their capacity to remain chemically inert in the presence of TEOS, TMA, chlorosilanes, fluorine species, and deposition by-products makes them a preferred alternative to coated metals or polymer composite seals. The dense crystalline structure of Semixlab’s SSiC eliminates outgassing and particle generation, supporting the high repeatability and low-defect environments required for advanced thin-film deposition. By maintaining precise sealing and mechanical integrity, these rings stabilize chamber pressure, temperature distribution, and precursor flow profiles—factors essential to consistent dielectric, barrier, and epitaxial film performance.

In diffusion, high-temperature annealing, and rapid thermal processing environments, SSiC Sealing Rings provide reliable sealing between the hot reaction zones and ambient mechanical interfaces of furnace systems. Their extremely low thermal expansion coefficient, combined with high fracture toughness and excellent oxidation resistance, allows them to preserve gas integrity and mechanical stability even above 1400°C. This ensures uniform dopant activation, stable furnace atmospheres, and wafer-to-wafer consistency, minimizing impurity incorporation and reducing drift in process parameters. For tube furnaces and RTP/RTA chambers alike, the resilience of SSiC under rapid temperature ramps ensures long operational lifetimes, fewer maintenance interruptions, and safeguarded process purity.

Through high-resolution microstructural inspection, plasma-etch resistance evaluation, precision dimensional control, and contamination analysis, every sealing ring is validated against strict global industry standards. The resulting components exhibit extremely low ionic impurities, near-zero permeability, and long-term dimensional stability, enabling fabs and equipment manufacturers to achieve higher uptime, extended PM cycles, and superior process uniformity across production lines. Semixlab is always your trusted long-term partner in the field of semiconductor sintered silicon carbide (SSiC).