Sealing rings

Description

Our supplier have been manufacturing graphite rings for the valve industry since the early 1970’s and deliver to customers all over the world. Rings are handcrafted by experienced personnel from graphite flakes that have been expanded through a heating process and converted into a graphite foil. The rings provide permanent elasticity and superior strength, thermal conductivity and spring-back resilience.

• < 25 ppm chloride contents as standard ( < 10 ppm for nuclear grade)
• Sulphur level limited to 300 ppm, with very low halogen levels
• Up to 99.85% purity
• Very high resistance to oxidation in high temperatures ( < 3% at 670 °C)
• Self lubricating with low friction