By the TopStraps team · Updated September 2026
Quick answer: The Patek Philippe Aquanaut is known for its “Tropical” strap, a textured composite rubber strap that shares the embossed pattern of the Aquanaut dial. It made rubber acceptable on a luxury sports watch. Many owners keep the original strap for its value and wear a replacement rubber strap for sport, swimming and travel. The two things to check before buying one are your reference number and the strap width.
What Is the Aquanaut “Tropical” Strap?
The Tropical strap is the composite rubber strap Patek Philippe designed for the Aquanaut, with a raised pattern that matches the watch’s dial. The Aquanaut launched in 1997 as a younger, more casual companion to the Nautilus. Its integrated strap was a big part of its identity from the start: soft, water-friendly and far more relaxed than a steel bracelet, yet designed to flow into the case like a bracelet does.
Because the strap is shaped to the case, it isn’t a standard strap you can pick by width alone. Different Aquanaut references use different case sizes. The smaller 5067A, for example, takes a 19mm strap, while the larger references need a wider one. Always match the strap to your reference.
Why the Rubber Strap Matters on the Aquanaut
Rubber is what makes the Aquanaut a watch you can wear anywhere. It is lighter than steel, doesn’t soak up water or sweat the way leather does, and keeps the watch comfortable in heat. That’s why the Aquanaut is so often worn at the beach, on a boat or while travelling, places where you would think twice about a leather strap.
The trade-off is that rubber is a wear part. Daily use, sun, salt water and sunscreen gradually take their toll. The strap can lose its finish, pick up marks near the clasp or start to look tired long before the watch does.
Original vs Replacement Strap: An Honest Comparison
Both have their place, and many owners use both. Here is how they compare:
| Original Patek Philippe strap | Aftermarket rubber strap | |
|---|---|---|
| Material | Patek’s composite “Tropical” material | Silicone or rubber, depending on the model |
| Fit to case | Made for the reference | Made for specific references — check yours |
| Cost | High | A fraction of the original |
| Best use | Keeping the watch complete and original | Daily wear, sport, swimming, travel |
| Effect on resale | Keeping it in good condition supports value | Lets you keep the original stored and unworn |
A practical approach many collectors take is to keep the original strap stored with the box and papers and wear a replacement day to day. When it’s time to sell or service the watch, the original goes back on in good condition.
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- Sale!
- For Patek Philippe Watches
Rubber Strap for Patek Philippe Aquanaut 21mm
- Original price was: 79.50 $.59.50 $Current price is: 59.50 $.
- Select options This product has multiple variants. The options may be chosen on the product page
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- Sale!
- For Patek Philippe Watches
Rubber Band for Patek Philippe Aquanaut 19mm
- Original price was: 79.50 $.59.50 $Current price is: 59.50 $.
- Select options This product has multiple variants. The options may be chosen on the product page
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- Sale!
- For Patek Philippe Watches
21mm Rubber Strap for Patek Philippe Aquanaut 5164A/5167A/5164/5167
- Original price was: 79.50 $.59.50 $Current price is: 59.50 $.
- Select options This product has multiple variants. The options may be chosen on the product page
How to Choose a Replacement Aquanaut Strap
Start with your reference number, which you’ll find on the warranty card or case back papers. Then check three things:
- Fit: the strap must be made for your Aquanaut reference. For the 5067A-001, see our 19mm rubber band for Aquanaut.
- Material: silicone is soft and comfortable from the first day; firmer rubber holds its shape longer under heavy use.
- Clasp: decide whether you’ll reuse your existing clasp or need a strap that comes with one.
Browse all our rubber straps for Aquanaut and other straps for Patek Philippe.
Aquanaut vs Nautilus: Which Strap Style?
The Aquanaut is the rubber-strap watch, and the Nautilus is the bracelet watch. The Nautilus is best known on its integrated steel bracelet (see our Nautilus bracelet), though many Nautilus owners also add rubber for summer. The Aquanaut is designed around rubber from the start, so on that watch the strap is the natural everyday choice rather than an alternative.
How to Care for an Aquanaut Rubber Strap
Rinse the strap in fresh water after the sea or the pool, and wash it now and then with mild soap and a soft brush to clean the textured pattern. Avoid solvents, perfume and alcohol-based cleaners, and don’t leave the watch in direct sun for long periods when you’re not wearing it. For changing the strap yourself, our guide to Patek Philippe strap replacement walks you through it.
Frequently Asked Questions
What is the Patek Philippe Aquanaut strap called?
It is known as the “Tropical” strap, a composite rubber strap with a raised pattern that matches the Aquanaut dial.
Can I wear an Aquanaut rubber strap in the water?
Yes. Rubber is the best strap material for water. Rinse it in fresh water after the sea or the pool to keep it in good condition.
Will any rubber strap fit my Aquanaut?
No. The strap is shaped to the case, and sizes differ between references. For example, the 5067A takes a 19mm strap. Always choose a strap made for your reference.
Why do owners buy a replacement strap?
To keep the original strap unworn for resale, to replace a worn strap, or to have a second strap for sport and travel at a fraction of the original’s cost.
How do I clean an Aquanaut rubber strap?
Wash it with mild soap, water and a soft brush, then rinse and dry it. Avoid solvents, perfume and alcohol-based cleaners.
New to changing straps? Our guide to watch straps covers sizing, materials, care and strap guides for every major watch brand.
