Rubber ball opener for screw-down watch case-backs. Designed for watchmakers and home repair of mechanical, automatic and quartz watches.
The Inflatable rubber ball case opener is the safest way to open a screw-down case-back without leaving a single mark on the polished steel. It works purely by friction: when you press and rotate, the rubber surface conforms to the fluted edge of the back and grips every notch.
Servicing a watch begins with opening it cleanly: no scratches, no slipped prongs, no dented case edges. The Inflatable rubber ball case opener (6 cm) was selected by our atelier because it delivers professional-grade results in the hands of a hobbyist, while remaining gentle on the watch finish. A serviceable watch is one that you can open as many times as needed without ever degrading its case.
Whenever you replace a case-back gasket, a crown gasket or a crystal gasket, the quality of the opening tool directly determines the quality of the seal you can re-create. A perished O-ring is the single most common cause of water damage on a vintage watch; replacing it correctly requires opening the case without forcing it, lubricating with Moebius 8217 silicone grease, then closing back to specification.
Once the watch is open, you can inspect the case-back gasket, replace a perished O-ring, lubricate the crown gasket with Moebius 8217 silicone grease and re-pressure-test the case before strapping it back on the wrist.
This tool is suitable for amateur watchmakers, jewellers performing battery changes, and small repair workshops. It is regularly used by our partner workshops to service Rolex, Omega, Seiko, Tudor and Tissot timepieces, and it pairs perfectly with our range of gaskets sold individually or in assortments.
Each unit is checked before dispatch: dimensions, finish, hardness and packaging are inspected so that the tool you receive matches what a trained watchmaker would buy in trade catalogues. We ship from France within 24 working hours with tracked delivery across Europe.
Servicing a watch begins with opening it cleanly: no scratches, no slipped prongs, no dented case edges. The Inflatable rubber ball case opener (6 cm) was selected by our atelier because it delivers professional-grade results in the hands of a hobbyist, while remaining gentle on the watch finish. A serviceable watch is one that you can open as many times as needed without ever degrading its case.
Whenever you replace a case-back gasket, a crown gasket or a crystal gasket, the quality of the opening tool directly determines the quality of the seal you can re-create. A perished O-ring is the single most common cause of water damage on a vintage watch; replacing it correctly requires opening the case without forcing it, lubricating with Moebius 8217 silicone grease, then closing back to specification.
Designed in France, manufactured to professional watchmaker specification. Our products are selected from European and Japanese tool manufacturers with a track record in the watch industry, and each batch is inspected at our French logistics centre before being put on sale.
Tool steel components are heat-treated to maintain edge sharpness over thousands of cycles; rubber components are sourced from suppliers that already serve the automotive and aerospace seal industries — the same suppliers that produce Hytrel, NBR, FKM, Viton and EPDM gasket compounds we use elsewhere in our catalogue.
All our tools come with a 24-month satisfaction warranty: if a component fails under normal use, we replace it at no charge. Customer support is handled in French, English and Spanish.
Used as described, no. Always work over a soft pad and never apply more torque than is strictly necessary; if a back resists, warm the case to soften the gasket grease and try again.
Yes — these tools are routinely used by our partner workshops on the Rolex, Omega, Seiko, Tudor and Tissot models referenced in our specifications.
Whenever you open a watch, plan to renew the case-back gasket and lubricate with Moebius 8217 silicone grease; we sell singles and assortments in Hytrel, NBR, FKM (Viton) and EPDM.
Within 24 working hours from France, tracked across Europe; expedited options available at checkout.
Yes, 24 months. Contact our support with photos and we will replace any defective component free of charge.
Rubber ball opener for screw-down watch case-backs. Designed for watchmakers and home repair of mechanical, automatic and quartz watches.
