Die formed graphite ring

The die formed graphite ring is a sealing component manufactured from pure flexible graphite or a composite that incorporates nickel or stainless steel. The supplier states that the rings can endure extreme temperature and pressure while maintaining sealing integrity. Chemical resistance is inherent to the graphite matrix, allowing the rings to survive exposure to aggressive media. Dimensions and thickness are offered in a range that can be customised to match the bore of pumps, valves or heat exchangers.

In the sealing industry, flexible graphite rings are commonly rated for operating temperatures up to 300 °C and pressures around 30 bar, which aligns with the performance described by the supplier. Typical hardness values lie between 45 and 55 Shore D, and the material exhibits a density near 1.70 g cm‑3, providing predictable compression set. Dimensional tolerances are usually ±0.2 mm, ensuring a tight fit in high‑precision applications. Standard packaging involves bulk crates with protective padding to prevent damage during transport.

These rings are widely used to seal pumps, valves and heat exchangers in chemical processing, oil and gas, and power generation facilities. The supplier mentions flexible minimum order quantities, allowing buyers to order quantities that match project scale, and cites ISO and SGS certifications for the product. Shipping can be arranged on FOB or CIF terms, but buyers should confirm the exact incoterm and payment conditions with the supplier. Prospective importers are advised to request the certification documents and verify the customised dimensions before placing an order.

Cixi Donfeng Sealing & Packing Products Co., Ltd. is located at No. 225 Jinsha Road, Cixi, Ningbo 315300, Zhejiang Province, China. The company is listed as an imported tier supplier and carries a harbor trust tier on the platform, indicating that its business credentials have been verified to a basic level. The profile does not disclose production capacity, employee numbers or annual turnover, and the recorded response rate is 0 % with no recent response time logged.

The listing highlights that the company can provide die formed graphite rings with ISO and SGS certifications, but no additional quality certificates are documented in the profile. Buyers should therefore request copies of the relevant certificates and confirm the specific material grade required for their application. As the supplier’s communication history is limited, establishing a clear line of contact before finalising the order is advisable.