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O'Ring Kit - Crowns (3646 & 6152)

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Mixed Crown O'Rings

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$1.50

-70%

$5.00

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This kit contains Six O'Rings as follows

  • 1 X 3646 Crown Round O'Ring (A)
  • 1 X 3646 Stem Tube Round O'Ring (A)
  • 2 X Stem Round O'Rings (B)
  • 2 X 6152 Nightwatch Crown Flat O'Rings (C)



Useful watch-builders mixed o'rings for both the 3646 and 6152 Crowns. Type A fits inside the Nightwatch 3646 Crown and also inside the Nightwatch 3646 Stem Tube. Type B are sometimes used on Winding Stem (optional). Type C are found inside the Nightwatch 6152 Crown. Type C are also very useful if you want to adjust the pressure on the Crown Guard Lever, by adding an additional rubber o'ring it acts as a spacer.

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