Y40 crimped back type

    outer dia.:Φ41.3
    height:23
    glycerine hole(on back):Φ6
    tie-in hole: 12 square×Φ7.3
                      12 square×Φ6.2
                      11 square×Φ6.2
thickness  of case 0.6
thickness  of ring 0.3