Strap for Oyster Perpetual 36 Stainless Steel / Silver

The lug width (ansa) of the Rolex Oyster Perpetual 36 126000-0001 is 20 millimetres. This measurement refers to the distance between the case lugs where the strap interfaces with the watch body. To verify correctly, measure from the inner left shoulder to the inner right shoulder of the case. This dimension remains consistent across all examples of this reference.

The choice depends on personal usage and style preferences. A genuine alligator strap provides formal elegance and versatility. Vegetable-tanned calf leather suits a contemporary interpretation and develops natural patina over time. Fabric NATO straps maintain a sporty character without compromising the watch's authority. Vulcanised rubber ensures resilience and water resistance for intensive use. All materials must respect the 20mm width specification for proper structural compatibility with the case.

Strap replacement requires a spring bar tool or dedicated removal instrument to extract the elastic bars that secure the strap to the case lugs. Position the watch in a holder, gently press the spring bar from underneath, and once released, remove the strap. Insert the new strap by aligning the attachment points with the inner shoulders of the case, then press firmly until the spring bar clicks into place. If uncertain, consult a professional watchmaker to avoid scratching the case.

Yes, it is entirely possible to use aftermarket straps compatible with the 20mm lug width specification. Quality artisanal straps are available in alligator, calf leather, canvas, rubber and other durable materials, offering versatility without compromising the watch's integrity. It is essential to verify that the strap matches the correct width (20mm) and is manufactured from durable materials. Specialised ateliers such as Casati Milano offer bespoke custom straps, allowing you to select material and personalise the design according to your aesthetic preferences.

The longevity of a leather strap depends on material quality, workmanship, climate conditions, and intensity of use. A premium alligator strap can maintain excellent condition for 3-5 years of regular wear. Vegetable-tanned calf leather, being softer, typically lasts 2-3 years before showing significant wear. Water exposure, sunlight, and humidity accelerate deterioration. Proper maintenance—periodic cleaning, leather conditioning, and storage in dry environments—substantially extends lifespan. Many enthusiasts rotate different straps seasonally to preserve their condition.