Omega · Seamaster PloProf

Strap for Seamaster PloProf Co-Axial Stainless Steel / White

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width24 mm
Case diameter55 mm
Reference224.32.55.21.04.001 (aka: 22432552104001)
FamilySeamaster PloProf
MovementOmega caliber 8500 hours, minutes, seconds | date | chronometer, co-Axial escapement
Year2009
CaseStainless Steel

Spring bar

Spring bars for Omega

The right category for this model · choose the 24 mm size

Straps for the Seamaster PloProf 224.32.55.21.04.001 (aka: 22432552104001)

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Seamaster PloProf 224.32.55.21.04.001 (aka: 22432552104001), seen from the bench

The Omega Seamaster PloProf 224.32.55.21.04.001 is a professional diving watch with a 55mm stainless steel case, representing the modern evolution of the iconic model created in 1970 for saturation diving. It features the Omega caliber 8500 Co-Axial movement, a unidirectional rotating bezel, and a monolithic safety valve at 3 o'clock. The 24mm lug width is specifically designed to maintain visual balance with the case diameter while supporting a structurally robust strap suitable for professional use and diving gloves.

Frequently asked questions

What is the lug width of the Omega Seamaster PloProf 224.32.55.21.04.001?

The lug width of the Seamaster PloProf 224.32.55.21.04.001 is 24mm. This specific width, larger than the traditional 20mm or 22mm, is designed to support the weight of the 55mm case and allows the use of straps with greater structural thickness, necessary for professional use. You can verify compatibility by measuring the internal distance between the case lugs.

Which strap material is best suited for the PloProf 224.32.55.21.04.001?

For the PloProf, the material depends on the intended use. Vegetable-tanned alligator is the most sophisticated and elegant choice, offering a patina that evolves over time. However, if the watch is intended for professional use in water, high-quality FKM rubber or ballistic nylon canvas maintain superior technical characteristics: flexibility even at low temperatures and no moisture absorption. Shell cordovan represents a fascinating aesthetic compromise, with excellent structural density.

How do you change the strap on the Seamaster PloProf 224.32.55.21.04.001?

The PloProf strap is replaced by removing the spring bars that connect the case lugs. Use a dedicated tool (springbar tool) to compress the pin without scratching the case. Ensure that the new strap has an exact 24mm lug width. If you are unsure of the procedure, contact an Omega-certified watch service center or Milano Straps for technical support.

Are aftermarket straps compatible with the Seamaster PloProf 224.32.55.21.04.001?

Yes, any strap with a 24mm lug width is technically compatible, provided the width is exact. However, to ensure structural quality consistent with the instrument and durability over time, we recommend straps made of premium leathers (alligator, shell cordovan) or certified technical materials (FKM rubber, ballistic canvas). Milano Straps offers a complete collection of 24mm customizable straps, with finishes and materials selected to match the aesthetic of the model.

How long does a leather strap last on a Seamaster PloProf?

The lifespan of a leather strap depends on the material, use, and maintenance. Vegetable-tanned alligator, if properly maintained and protected from prolonged exposure to salt water without subsequent cleaning, can last 5-7 years with moderate daily wear. Shell cordovan is even more durable, with a potential lifespan of 7-10 years. FKM rubber, conversely, offers a useful life of approximately 3-5 years, after which it tends to stiffen. Atelier Casati Milano provides straps with an 18-month warranty and support for maintenance and replacement if necessary.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only