... Authentic reputation 207 series Double face mechanical seal (sealing, seal) 205, 206, 207 series Double face mechanical seal (sealing, seal)Type ... multi-spring, liquid outside flowing, driven by bush type seals. 205 is non-balance type; 206 is atmosphere side balance type ... can reduces 80130mm. 205H, 206H, 207H are improved from type 205, 206, 207 which have depose liquid collection. GW205 is improved ...