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    Bontech plastic crystals by Sternkreuz

    Whether slightly domed, with or without magnifier, or with or without reinforcement – the versatile Bontech plastic crystals from Sternkreuz offer reliable solutions for a wide range of watch models.
    Known for durability, precision, and excellent optical clarity, Bontech crystals ensure a perfect fit for professional watchmakers.

    A high-quality choice for watch repairs, restorations, and replacements.

    Subgroups
    • N - plastic lenticular
      nameVersiondimensionsadditionitem No.
      NNormaly domed95-380only in straight sizes025400
      NNormaly domed382-500only in straight sizes025410
    • M - plastic miconcave
      Strength 1.2mm
      nameVersiondimensionsadditionitem No.
      MFlat domed164-380only in straight sizes025350
      MFlat domed382-500only in straight sizes025360
    • HW - plastic Etanche
      nameVersiondimensionsadditionitem No.
      HWHigh-domed120-380only in straight sizes025300
      HWHigh-domed382-400only in straight sizes025310
    • HH - plastic Punaise
      nameVersiondimensionsadditionitem No.
      HHextrahigh domed250-340only in straight sizes025270
    • CG - plastic Geneve
      nameVersiondimensionsitem No.
      CGextra flat180-340025240
    • C - plastic concave
      nameVersiondimensionsitem No.
      Cconcave95-220025220
    • CP - plastic sapphire
      nameVersiondimensionsitem No.
      CPSapphire Imitation110-322025230
    • CPR - plastic sapphire domed
      namedimensionsitem No.
      CPR110-210025210
    • SAV - plastic Savonette
      namedimensionsVersionitem No.
      SAV200-500extra thin025460
    • DIA* - Diaplan normal domed
      namedimensionsVersionitem No.
      DIAC160-352Diaplan - normal domed025160
      DIAG160-352Diaplan - normal domed025161
    • DIA*F - Diaplan flat domed
      namedimensionsVersionitem No.
      DIACF180-352Diaplan - flat domed025180
      DIAGF180-352Diaplan - flat domed025181
    • AT* - reinforced normal domed
      namedimensionsVersionitem No.
      ATC141-373armoured - normal domed025000
      ATG141-373armoured - normal domed025001
    • AT*H - reinforced high domed
      namedimensionsVersionitem No.
      ATCH270-336armoured - high-domed025050
      ATGH270-336armoured - high-domed025051
    • AT*B - reinforced wide ring
      namedimensionsVersionitem No.
      ATCB284-343armoured - wide ring025020
      ATGB284-343armoured - wide ring025021
    • AT*R - reinforced modified
      namedimensionsVersionitem No.
      ATCR170-206 / 269-333armoured modified025090
      ATGR170-206 / 269-333armoured modified025091
    • AT*T - reinforced diver's
      namedimensionsitem No.
      ATCT180-352025100
    • AT*L - reinforced with loupe
      namedimensionsVersionitem No.
      ATCL280-335armoured loupe025055
      ATGL280-335armoured loupe025056
    • YBO
      namedimensionsitem No.
      YBO270-350025430
    • YFO
      namedimensionsitem No.
      YFO140-350025440

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