KL-680, to replace Johncrane 680 seal. Welded metal bellow seals design. Temperature: -20---220 Speed: 20m/s Pressure: 25bar Standard size: 18-100mm or 0.75-4.0 The common material: Sealing ring: Car, Sic, Ssic, TC Secondary seal: NBR, EPDM, Viton, Kalrez etc. Spring and metal parts: 304, 316, AM350, HAST.C. Inconel 718, Titanium. Kalu also offer mechanical seals stocks for replacement of Burgmann MFLWT80, MFLWT80, Johncrane 609. The delivery time is 7-15 days