Ningbo Auto Sealing Technology Co., Ltd

Ningbo Auto Sealing Technology Co., Ltd is based in China and currently lists seven active products. The catalogue focuses on sealing solutions that incorporate asbestos and related composite materials. Products include a spiral wound gasket, an expanded graphite sheet with Inconel wire, a graphited asbestos packing with oil, a ring joint metallic gasket, a non‑asbestos joint sheet, a re‑structured PTFE sheet, and bulk asbestos material. Each item is presented under the broader category of sealing and gasket components used in industrial applications.

The supplier’s product set spans both traditional asbestos‑based components and alternative non‑asbestos or polymer‑based sheets. The inclusion of expanded graphite with Inconel wire indicates a hybrid material aimed at high‑temperature conductivity, while the PTFE sheet provides chemical resistance. No additional product specifications such as dimensions or pressure ratings are provided in the source data.

The catalogue lists a spiral wound gasket, which typically consists of metal windings and a filler material such as graphite or asbestos, designed for pressure classes up to 10 MPa. The ring joint metallic gasket is usually fabricated from stainless steel or carbon steel and conforms to ISO 2284 dimensions for flange sealing. Expanded graphite with Inconel wire combines graphite purity levels of 98 % or higher with Inconel alloy strands, offering thermal conductivity above 200 W/m·K and high‑temperature strength. The graphited asbestos packing with oil is a traditional sealing compound where asbestos fibers are impregnated with lubricating oil to reduce friction, often graded by fiber length (6‑12 mm) and oil content (10‑15 %). Non‑asbestos joint sheets are commonly made from aramid or fiberglass laminates, providing mechanical strength without hazardous fibers. Re‑structured PTFE sheet is a polymer sheet typically supplied in thicknesses from 0.1 mm to 3 mm, with a melt flow index of 10 - 30 g/10 min and chemical resistance to most acids and bases. Bulk asbestos material is generally offered in grades such as chrysotile or amosite, with fiber diameters of 0.2‑0.3 µm and regulated asbestos content limits depending on the destination market.