About Chengdu Yitong Seal Co., Ltd. - Mechanical Seals Supplier in China

China, specifically the Chengdu region, hosts Chengdu Yitong Seal Co., Ltd., which currently lists five active products. The company's catalogue focuses on mechanical sealing solutions, falling under the broader categories of Mechanical Seals and Adhesive, Sealants & Lubricants. Products include the SAF Double Face Pump Mechanical Seal, the YTG101 Tandem Dry Gas Seal for Pumps, the YTG801 Dry Gas Seal for Centrifugal Compressor, the YTG807 Dry Gas Seal for Roots Blower, and the Ytc152b Dual Face Metal Bellow Mechanical Seal. The YTG101 is identified under HS heading 8484.20 and is constructed from silicon carbide, carbon graphite, fluorocarbon FKM and stainless steel 316. The remaining items are listed without specific HS codes in the provided data.

Product Range and Specialties of Chengdu Yitong Seal Co., Ltd.

The product range comprises double‑face and tandem dry gas seals as well as metal‑bellow mechanical seals. In the mechanical seal market, double‑face seals are typically offered in grades such as carbon graphite (C‑G), silicon carbide (SiC) and ceramic‑filled composites, with pressure ratings up to 30 bar and operating temperatures up to 250 °C. Dry gas seals are commonly supplied in tandem configurations to achieve leak rates below 1 ppm, and are built from materials like carbon graphite, silicon carbide and fluorocarbon elastomers to resist abrasive and corrosive media.

Metal‑bellow seals provide flexibility for shaft misalignment and thermal expansion; they are usually fabricated from stainless steel 316 or 304 and may incorporate PTFE or other polymer face materials. Buyers of these seal types often request data on shaft diameter compatibility (e.g., 25 mm to 200 mm), face pressure, leakage class (ISO 21028), and service life expectancy. The catalogue does not list specific dimensions, so further technical sheets are required to match equipment specifications.

Trade and Export Information - Chengdu Yitong Seal Co., Ltd.

China is a major exporter of mechanical sealing devices, with HS chapter 84 covering a wide variety of sealing equipment. HS code 8484.20, used for the YTG101 tandem dry gas seal, falls under “Sealing devices, other than for fluids” and is subject to standard customs documentation and, for many destination markets, conformity assessment such as CE marking for the EU or ASME certification for North America. Typical import regions include Southeast Asia, Europe and North America, where the oil‑&‑gas, petrochemical and power generation sectors source high‑performance seals.

Export shipments are usually packed in wooden crates or bulk bags, with container loads ranging from a single 20‑ft container (approximately 12  -  15 units depending on size) to a 40‑ft container for larger orders. Buyers often require pre‑shipment inspection reports (e.g., SGS or Bureau Veritas) and material test certificates confirming composition of silicon carbide, carbon graphite and stainless steel. Incoterms such as FOB Chengdu or CIF major ports are commonly negotiated.

Sourcing from Chengdu Yitong Seal Co., Ltd. - Buyer Guidance

When sourcing from Chengdu Yitong Seal, buyers should request detailed product data sheets that list material composition, operating temperature range, pressure rating, shaft size compatibility and leakage specifications. Samples of the seal faces and a third‑party material test report can verify the claimed silicon carbide and carbon graphite grades.

Because the supplier does not list certifications, buyers are advised to ask for ISO 9001 quality management certificates, API 682 seal design approval or any other standard required by the end‑use industry. Verification of the HS code 8484.20 documentation, as well as compliance with destination‑country import regulations, should be part of the pre‑order checklist.

What types of mechanical seals does Chengdu Yitong Seal offer?

The catalogue lists double‑face pump mechanical seals, tandem dry gas seals for pumps, dry gas seals for centrifugal compressors and roots blowers, and dual‑face metal‑bellow mechanical seals.

Which HS code applies to the YTG101 product?

The YTG101 Tandem Dry Gas Seal for Pumps is classified under HS code 8484.20, which covers sealing devices other than those for fluids.

What materials are used in the YTG101 seal?

The YTG101 is constructed from silicon carbide, carbon graphite, fluorocarbon FKM elastomer and stainless steel 316, as specified in the supplier data.

What typical certifications should a buyer request for these seals?

Buyers commonly request ISO 9001 quality management certification, API 682 seal design approval, and, for EU shipments, CE conformity assessment, although the supplier’s specific certifications are not listed.

What are the usual performance specifications for dry gas seals?

Dry gas seals are typically rated for pressures up to 30 bar, operating temperatures up to 250 °C, and leakage rates below 1 ppm in tandem configurations, meeting ISO 21028 leakage class requirements.

How are the seals usually packaged for export?

Seals are generally packed in wooden crates or bulk bags, with container loads of 20‑ft or 40‑ft depending on quantity, and are shipped under standard Incoterms such as FOB Chengdu or CIF destination port.

What documentation should be obtained before placing an order?

Buyers should obtain material test certificates, product data sheets, HS code declaration, and any applicable third‑party inspection reports to confirm compliance with destination‑country regulations.