.: VD11


2021_type_VD11
Product description:
Materials:
High-strength VD11 metal bellows type mechanical seal provide high strength and excellent corrosion resistance. It is widely used in refinery, petrochemical, chemical industry, paper making etc. We recommend this type of mechanical seal for high temperatures and aggressive mediums, such as acids, caustics, sour water, sour hydrocarbon etc. It is suitable for low-temperatures from -75°C and high- temperatures up to 260°C. Standard metal bellows VD11 type is performed in single ply welded metal bellows pressure range from vacuum to 20 bar. Improved metal bellows VD11 type is performed in double ply welded metal bellows pressure range from 20 bar up to 69 bar.
• Seal face: Carbon antimony impregnated, SiC, TC
• Stationary seat: SiC, TC
• Secondary seal: Fluorocarbon, PTFE-Encapsulated Fluorocarbon, Perfhioroelastomer, EPDM, Aflas
• Metal Parts: 316L, Alloy 718, Carpenter 42
• Optional materials on request