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O-ring standard

Round Seals/O-rings for Waterproof Watches – Selection Available in Various Cord Thicknesses

These black O-rings made from elastic synthetic rubber are ideal for sealing waterproof wristwatches. They are temperature-resistant, durable and provide reliable protection against moisture and dust.

Available in standard cord diameters from 0.50 to 1.50 mm, 2 pieces per packaging unit – perfect for watchmakers and service companies.

Size 21 Previous product 21/95 Next product

Round gasket

Round sealing rings made of elastic, black synthetic rubber – ideal as replacement gaskets for waterproof watches. Perfect for watchmakers and repairs.

Contents: 2 pieces per packaging unit



nameSize 21

outside-Ø27.70

inside diameter26.50

thickness0.60

item No.015021

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