Tudor · Pelagos

Strap for Tudor Pelagos M25827KNRS

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter42 mm
ReferenceM25827KNRS
FamilyPelagos
MovementTudor caliber MT5813 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel | Chronometer

Recommended spring bar

Modern Tudor 22mm spring bars — factory specification

Technical match for lug width and diameter · lug 22 mm · Ø 1.8 mm

All Tudor spring barsOpen →

Straps for the Pelagos M25827KNRS

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Pelagos M25827KNRS, seen from the bench

The Pelagos is a Tudor dive chronograph powered by the automatic MT5813 caliber, certified as a chronometer with a column-wheel mechanism. The 42mm case is made of titanium with carbon and stainless steel inserts. The dial features hours, minutes, small seconds, date, and chronograph functions, with 22mm lugs.

Frequently asked questions

What is the lug width of the Tudor Pelagos M25827KNRS?

The lug width of the Tudor Pelagos M25827KNRS is 22mm. This measurement is calculated from the inner shoulder of one lug to the other, the space where the strap inserts. It is essential to use straps with exactly 22mm width to ensure proper seating in the anchor points and prevent micro-movements during wear.

What is the best strap for the Tudor Pelagos M25827KNRS?

The best strap depends on the use case. For formal occasions, alligator offers elegance and natural patina development over time. For daily and sports use, vegetable-tanned calf combines comfort, wrist adaptation, and salt water resistance. For regular diving or extreme environments, Rubber NATO or FKM rubber maintains elasticity at critical temperatures and does not degrade when in contact with chlorine or salt.

How do you change the strap on the Tudor Pelagos M25827KNRS?

To change the strap, remove the lug pins (spring bars) using a spring bar tool. Gently lift the pin from its seat, remove the old strap, and position the new one by aligning the holes with the anchor points. It is important to verify that the new strap has a 22mm lug width and adequate thickness to maintain correct lateral tension during use.

Is the Tudor Pelagos M25827KNRS compatible with quality aftermarket straps?

Yes, the M25827KNRS is compatible with quality aftermarket straps provided they respect the 22mm lug width and have robust construction. Straps in alligator, vegetable-tanned calf, shell cordovan, or FKM rubber can integrate perfectly with the titanium case, provided the thickness is proportionate (typically 3.5-4.5mm) to prevent lateral oscillation.

What is the typical lifespan of a leather strap on the Tudor Pelagos M25827KNRS?

A quality leather strap (alligator or calf) mounted on an M25827KNRS typically lasts 3-5 years of regular daily use, depending on sun exposure, salt water humidity, and maintenance frequency. Vegetable tanning develops patina that can be rejuvenated with periodic conditioning, extending useful life to 7-8 years. Monitoring the wear of the lug pins is critical: if the strap begins to oscillate laterally, it is time to replace the strap even if the leather still appears intact.

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