Rolex · Submariner

Strap for Submariner 16618 Lapis

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter40 mm
Reference16618 Lapiz
FamilySubmariner
MovementRolex caliber 3135 Hours, Minutes, Seconds | Chronometer
CaseYellow Gold

Recommended spring bar

Spring bars Rolex vintage 20mm × 2mm — drilled lugs

Technical match for lug width and diameter · lug 20 mm · Ø 2 mm · drilled lugs

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Straps for the Submariner 16618 Lapiz

Selected for the 20 mm lug width · workshop selection

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The Submariner 16618 Lapiz, seen from the bench

The Rolex Submariner 16618 Lapis, produced in the 1990s, features a 40mm yellow gold case with a distinctive bluish-grey dial. Powered by the Rolex calibre 3135 chronometer movement with 28,800 oscillations per hour and approximately 48 hours power reserve, it offers water resistance to 300 metres. The lug width is 20mm, measuring the attachment points between the bracelet and case.

Frequently asked questions

What is the lug width of the Rolex Submariner 16618 Lapiz?

The Rolex Submariner 16618 Lapiz features a lug width (ansa) of 20 millimetres. This measurement represents the distance between the attachment pins on both sides of the case. It is essential to verify this measurement when purchasing an aftermarket strap to ensure precise compatibility and a secure fit without excessive play.

Which strap is best suited for the Rolex Submariner 16618 Lapiz in yellow gold?

For a Submariner 16618 Lapiz in 18-carat yellow gold, we recommend a dark brown or cognac alligator strap, which enhances the warmth of the precious metal. Alternatively, a bordeaux-toned shell cordovan creates a sophisticated pairing. For underwater use, a black rubber strap with gold-toned fittings is the most technical solution. A vegetable-tanned calf strap in natural tone maintains balance and dial legibility.

How do you change the strap on a Rolex Submariner?

Changing the strap on a Submariner 16618 Lapiz requires a specialised spring bar tool to remove the attachment pins. You must release tension on the spring bar's internal mechanism, extract the old strap, and insert the new one whilst correctly aligning the holes. For watches of this calibre, we recommend entrusting the operation to a qualified professional to avoid damage to the case.

Is an aftermarket strap compatible with the Submariner 16618 Lapiz?

Yes, any strap equipped with a 20-millimetre lug width is compatible with the Submariner 16618 Lapiz. Specialist brands offer straps in alligator leather, shell cordovan, vegetable-tanned calf, and other materials of equivalent or superior quality to original Rolex straps. It is important to verify that the strap's spring bars are made of robust stainless steel to prevent oxidation over time.

How long does a leather strap last on a Rolex Submariner?

The longevity of a leather strap depends on the material and maintenance. High-quality alligator or shell cordovan retains integrity and flexibility for 8–12 years with proper care (hydration with specialised products, protection from excessive moisture). A vegetable-tanned calf strap typically lasts 10–15 years. Exposure to perspiration, fresh water, and direct sunlight significantly reduces the useful life of the strap.

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