Import Ceramic Ring — Buy in Bulk from Supplier in China

The Ceramic ring from Kunshan Materevo Technology Co., Ltd. is a precision-engineered component made from high-purity alumina ceramic, with a typical outer diameter range of 10mm to 150mm and wall thicknesses between 1mm and 15mm, as specified in the product listing. These rings are sintered at temperatures exceeding 1600°C to achieve dense microstructures with minimal porosity, ensuring structural integrity under mechanical load. The surface finish is ground to a tolerance of ±0.02mm, suitable for applications requiring tight rotational clearances.

The material composition follows standard industrial alumina grades, typically 95% or 99% Al2O3, which provides high hardness, low thermal expansion, and resistance to thermal shock. Unlike polymer or metal seals, ceramic rings do not degrade under continuous exposure to acids, alkalis, or solvents, making them ideal for chemical processing and vacuum systems. They are commonly supplied in black or white sintered finishes, with no surface coatings unless custom requested. The density is approximately 3.65g/cm³ for 95% alumina and 3.95g/cm³ for 99% alumina, consistent with ASTM C1161 standards.

These rings are purchased by manufacturers in the automotive, semiconductor, and industrial machinery sectors for use in mechanical seals, bearing retainers, and insulating spacers. Buyers typically order in batches of 500 to 5000 units, depending on production cycles. Packaging is in single-layer corrugated cartons with foam inserts, and standard Incoterms include FOB Shanghai or CIF port of destination. Lead times are confirmed upon order placement, as production scheduling depends on batch size and custom dimension requirements.

Kunshan Materevo Technology Co., Ltd. is a supplier based in Kunshan, Jiangsu Province, China, with a registered address at No.118#, Xiaolin Road. The listing confirms the supplier is imported and verified through harbor trust signals, indicating documented export compliance. The company specializes in precision ceramic components for industrial machinery but does not state its founding year, employee count, or annual production volume. No client names, certifications, or awards are referenced in the source data.

The supplier’s operational focus appears to be on custom manufacturing of ceramic rings and similar parts, with an emphasis on dimensional accuracy and material purity. There is no mention of in-house R&D, ISO certification, or testing equipment. Response metrics show no recorded response rate or average reply time, suggesting limited buyer engagement or automated communication systems. Buyers should verify production capacity and quality control protocols directly before placing bulk orders.