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Rubber Watch Strap: The Complete Guide for Sport and Dive Watches

by David in Actualités

The rubber strap has established itself as the exceptional companion for sports and dive watches. For active lifestyles, rubber offers unmatched performance. But not all rubber is created equal. FKM, vulcanised, silicone — here is how to commission the right one.

Types of Rubber

FKM (Fluoroelastomer)

The pinnacle of horological rubber. Resistant to UV, oils, heat, and chemicals. Silky touch that never sticks to skin. This is the material used by the most distinguished watch houses (Rolex Oysterflex, Hublot). Acquire our FKM rubber straps.

Vulcanised Rubber

Natural rubber treated through vulcanisation for enhanced resilience. More supple than FKM with an excellent quality-to-price ratio. This is the material behind the celebrated Rubber B and Tropic straps.

Silicone

The most affordable option but also the least refined. Tends to attract dust and can feel sticky in warm weather. Acceptable at entry level but best avoided on masterful timepieces.

Leather-Rubber Hybrid

The best of both worlds: leather aesthetics on the exterior, rubber comfort and resistance against the skin. See our hybrid straps.

FKM vs Silicone: The Real Differences

  • Touch: FKM is silky and dry; silicone can feel tacky
  • Durability: FKM lasts 5–10 years; silicone 1–3 years
  • UV resistance: FKM does not yellow; silicone may discolour
  • Price: FKM $80–250; silicone $15–50

Which Rubber for Which Watch?

  • Dive watches: FKM or vulcanised — total water resistance
  • Sport chronographs: FKM for a masterful appearance
  • Daily wear: Leather-rubber hybrid for versatility
  • Luxury timepieces: Rubber B or FKM alligator for Rolex, Patek, AP

Frequently Asked Questions

Does rubber turn yellow over time?

Silicone can yellow with prolonged UV exposure. Quality FKM and vulcanised rubber do not yellow and maintain their appearance for years.

Can I swim with a rubber strap?

Absolutely — that is precisely what rubber straps are designed for. Rinse with fresh water after every swim in saltwater or chlorinated pools.

Do rubber straps develop an odour?

Quality rubber (FKM, vulcanised) produces no odour whatsoever. Budget silicone may have a chemical smell when new that typically dissipates within a few days.

Acquire our rubber strap selection — Free delivery in Hong Kong.

Tags: dive watch FKM guide rubber strap sport watch vulcanised rubber
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RubberB Straps for Rolex: The Complete Guide | MisterChrono Hong Kong

Expert guide · Written by David · MisterChrono Hong Kong RubberB Straps for Rolex: The Complete Guide to Swiss Vulcanized Rubber Material, Blocked Integration technology, VulChromatic, series overview and full Rolex compatibility — everything you need to know before choosing your RubberB strap. When Rolex collectors decide to replace their Oyster bracelet, the choice of rubber strap matters enormously. Not all rubber straps are created equal — and RubberB, the Swiss manufacturer that pioneered custom rubber straps engineered exclusively for Rolex, has set the benchmark that every competitor is measured against. At MisterChrono Hong Kong, we carry the full RubberB range for Rolex. This guide breaks down everything: the material science behind RubberB straps, the proprietary technologies that make them unique, the four series available, and detailed compatibility across all major Rolex references. 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Hypoallergenic: Non-toxic, non-marking, non-allergen — exceeds FDA and BVGG certification requirements. Swiss manufacturing: Every strap is hand-finished in Switzerland to the exacting standards of the luxury watchmaking industry. Blocked Integration: the technology that changed rubber straps Blocked Integration is RubberB's core engineering innovation — and the reason why their straps look so different from generic rubber alternatives on a Rolex case. The technology works by embedding precisely micro-calibrated solid inserts into the strap's end pieces. These inserts are shaped to match the exact geometry of a specific Rolex case's lug holes, so when the strap is installed, it sits flush against the case — no gap, no wiggle, no movement. The visual result is striking: from the side profile, the strap appears to be part of the watch case itself, integrated like a factory configuration. Collectors often describe it as how a rubber strap "should have looked from Rolex." 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HK Price Reference: Premium rubber straps for the Submariner range from approximately HK$680 to HK$1,800 depending on material grade and buckle specification. Explore our full selection at MisterChrono Hong Kong. 2. Luxury Leather Straps — For Climate-Controlled Occasions Leather on a Submariner is a deliberate provocation — and that is precisely why Hong Kong's more confident collectors love it. Pairing a dive watch with a Barenia calf or hand-stitched alligator strap signals a certain playful mastery of watch culture. It says: I know the rules, and I have chosen to break them deliberately. In Hong Kong's luxury hospitality circuit — private members' clubs in Central, rooftop events at the Mandarin Oriental, or dinner at Amber — a Submariner on a dark navy or chocolate alligator strap is quietly striking. The combination speaks to collectors rather than performing for the general public. Important caveat for Hong Kong: Genuine leather requires conscientious care in this climate. 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These bracelets are a particular favourite among Hong Kong collectors who watch the secondary market closely and who understand that bracelet combinations can affect overall desirability and perceived completeness of a set. For those considering this option, quality matters enormously: weight, brushed-to-polished ratio, and micro-adjustment clasp precision are the benchmarks to apply. Matching Straps to Submariner References: A Quick Reference Submariner Reference Recommended Strap HK Context 126610LN (Black dial) Matte black FKM rubber or dark navy alligator Business & finance events, Central 126619LB (Blue dial, white gold) Ice blue alligator or brushed steel Jubilee Formal occasions, hotel venues 126610LV "Kermit" Olive NATO or dark green rubber Weekend, Sai Kung, Lantau outdoors 124060 (No date) Solid black NATO or grey FKM rubber Daily wear, MTR to meetings Lug Width, Fit, and What Your Watch Technician Will Tell You The Rolex Submariner uses a 20mm lug width across all 5 digits references then 21 for 6 digits references. This is the measurement you need when ordering any aftermarket strap. Most quality strap makers taper to 18mm or 16mm at the buckle end to ensure comfort and correct fold under the clasp. Crucially, the Submariner features drilled-through lugs on older references (pre-2010 models) and closed lugs on newer ceramic-bezel versions. Drilled lugs allow for spring bar removal without tools using end-link pressure, while closed lugs require a proper spring bar tool — available at our Wellington Street boutique alongside any strap purchase. Our team at MisterChrono's Central location performs complimentary strap fitting for all purchases made in-store. We recommend a professional fitting particularly for aftermarket bracelets and any strap pairing with the white gold 126619LB, where the value of the piece warrants care. The Hong Kong Market Perspective: Investment and Versatility Hong Kong remains one of Asia's most active Rolex secondary markets, with auction houses in Wan Chai, pre-owned dealers throughout Tsim Sha Tsui, and a thriving grey market centred around major shopping complexes. In this environment, collectors think about their watches as both objects of passion and stores of value. 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Our advisors are available to recommend and fit the right strap for your specific reference and lifestyle. 72 Wellington Street, Central, Hong KongMonday to Sunday: 11:30 – 19:30  Browse All Submariner Straps Frequently Asked Questions Does changing the strap void my Rolex warranty? No. Changing the strap or bracelet of your Submariner does not affect the Rolex international warranty, which covers the movement and case. The bracelet is a separate component. Retain your original bracelet and you retain full commercial completeness. What is the best strap for Hong Kong's summer humidity? High-grade FKM rubber or vulcanised rubber is the most practical choice for Hong Kong's May–September period. It is non-porous, salt-resistant, and will not retain moisture against the wrist. Premium Perlon NATO straps are also a good fabric alternative for slightly more casual wear. Can I fit the strap myself or should I visit a specialist? Rubber and NATO straps on drilled-lug Submariners can be changed with a quality spring bar tool at home. For closed-lug ceramic models and any metal bracelet, we recommend a professional fitting to avoid damaging the lug surfaces. Complimentary fitting is available at our Central boutique with all strap purchases. Are MisterChrono straps available for shipping across Hong Kong? Yes. All straps available through our online collection ship across Hong Kong SAR with express delivery options. In-store pickup at Wellington Street, Central is also available. Article written by Pierre-Yves, Watch Strap Specialist at MisterChrono Hong Kong. Last updated: 2026. All prices in HKD and subject to change. Product availability confirmed in-store at 72 Wellington Street, Central.

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Best Strap for a Tudor Black Bay: Selection Guide

The Tudor Black Bay has become one of the most popular dive watches on the market. Its 22mm lug width and neo-vintage design make it an coveted candidate for strap experimentation.Technical SpecificationsThe Black Bay uses a 22mm lug width (except the BB58 which uses 20mm). Verify your model with our measurement guide.NATO: A Natural PairingTudor themselves offer fabric straps with the Black Bay. A 22mm NATO in black, grey, khaki, or burgundy is the perfect complement to the BB's neo-vintage aesthetic.Vintage LeatherA distressed leather strap in brown or cognac beautifully enhances the Black Bay's retro spirit. The black BB + vintage brown leather combination is a modern classic.RubberFor diving and sport, a 22mm rubber strap preserves the Black Bay's aquatic vocation with superior comfort.Frequently Asked QuestionsDoes the BB58 have the same lug width as the standard Black Bay?No. The BB58 uses 20mm (39mm case); the standard Black Bay uses 22mm (41mm case).See our 22mm straps — Free delivery in Hong Kong.

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The world of watchmaking is a field that combines precision and patience. Passionate about this world and luxury watches, four partners and friends decided in 2009 to found a company offering accessories related to fine watchmaking. This is how MisterChrono Paris was born.

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