Armure<br>Mµ03-102

Armure
Mµ03-102

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Armure<br>Mµ03-211

Armure
Mµ03-211

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Innovative watch engineering

It took us three years of research and development, backed by unfailing optimism and tenacity, to develop the nO-Ring® technology. A truly disruptive innovation, this patented system relegates O-ring seals to the rank of historical curiosity. Based on the principle of mechanical sealing technology, this 100% Swiss Crafted device guarantees absolute security while avoiding the need for costly recurrent maintenance service. The watch industry had seen no significant breakthroughs in this field for over 130 years.

Eric Mauron

Mauron Musy, Innovative Watch Engineering

Christophe Musy

Mauron Musy, Innovative Watch Engineering
Mauron Musy
Engineering<br>the ultimate watch conception

Engineering
the ultimate watch conception

Find out more
More than swiss made<br>100% swiss crafted

More than swiss made
100% swiss crafted

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FORGET EVERYTHING YOU’VE EVER KNOW ABOUT WATER RESISTANCE

NO-RING® by
MAURON MUSYPATENTED DIRECT MECHANICAL
SEALING TECHNOLOGY

The nO-Ring® technology combines three principles: mechanical sealing technology, the clamp brace, and the satellite compression spring. A knock-on solution whose brilliance lies in miniaturising and adapting this device to watchmaking: a world first and a true paradigm shift in the field of containment, propelling the mechanical function of water resistance to the status of “watch exterior complication.”

 

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Mauron Musy - NO-RING®
Mauron Musy - NO-RING®

CLAMP BRACE AND SATELLITE SPRINGSCaseband, Bezel
and Satellite
Springs

Mechanical sealing technology must nonetheless be adapted: it is impossible to use clamping screws in watchmaking due to the risk that the latter might deform certain components. They are replaced by extremely specific clamp braces: the sapphire crystal and caseback on the one hand; and the caseband on the other. These clamp braces tense the various elements by means of specially developed satellite compression springs. If a water molecule were the size of a golf ball, it would have to travel 430km and face 3m-high hurdles in order to infiltrate the case.

Mauron Musy - NO-RING®
Mauron Musy - NO-RING®

mechanical sealing technologyGlass, Caseback and Ring

Mechanical – or direct –sealing technology consists of hermetically fitting various elements together without any gaskets. This technology calls for serious knowledge of materials physics and fluid dynamics. It requires hardening and then straightening or grinding of the materials in contact so as to achieve exceptional flatness and controlled roughness of the surface profile. Thus adapted to watchmaking, this approach entails standards governing the world of infinite smallness: if the surfaces involved were the size of an Olympic swimming pool, their relief would correspond to tiny waves measuring a third of a millimetre high.

Mauron Musy - NO-RING®
Mauron Musy - NO-RING®

CROWN DEVICE CROWN DEVICE

The winding stem pivots inside a bearing screwed to the caseband. These two perfectly adjusted components with their nanometrically accurate fit ensure a gasket-free seal. In comparison with the diameter of the Channel Tunnel, the space between the two would amount to a third of a millimetre, the thickness of a business card. The same principle is applied to the pushbuttons.

Mauron Musy - NO-RING®