Rolex

After spending time wearing the Rolex DeepSea SeaDweller (DSSD), I decided to obtain a Rubber B strap.  My last Rubber B strap was a successful experience on my GMT-C so I thought a Rubber B for the DSSD was in order.  

This particular Rubber B strap has three different design characteristics that separate it from the standard Rubber B strap.  

The first significant difference between the original Rubber B and the model designed for the DSSD is that the newer version is designed for an Oysterlock clasp.  Rather than selecting a large or small size strap, then cutting the strap to fit as is the procedure for the older Rubber B's, the Carbon DSSD strap is available in specific lengths such that the strap utilizes the bracelet screws on an Oyster clasp.  The biggest advantage is that there are not any extra adjustment holes in the strap and the strap can be fitted precisely. 

The second significant difference is that the strap end links are not based on the same lug profile as the original Oyster bracelet.  With the DSSD strap, the edge of the strap flares to the outside of the case, creating a seamless line from the side of the case to the bracelet clasp. 

The rubber is thick, substantial, and does not flap around partially due to the "strength infusion technology" described below. 

 

The newer Rubber B end link design creates a smooth line from the side of the case to the clasp making it appear that the strap is specifically designed for the DSSD (which it is) and not a watchstrap bought at the local Kmart.   

The strap lengths are purchased in sizes based on the number of links the DSSD Oyster bracelet had when fitted to the owner's wrist.  The strap on the left is designed to replace five (5) links, and the strap on the right is designed to replace four (4) links.

The Rubber B website has a chart showing which corresponding length to purchase.

Like other Rubber B straps, the end link is designed to fit a Rolex exactly, and the carbon infused Rubber B for DSSD is no different.  The solid end link molded inside the strap slides seamlessly into the watch lugs as smoothly as the original stainless 904L end link.  The springbars are well protected  from being bent, and there is plenty of space for a springbar tool for easy Rubber B strap removal.

Also separating this strap from other vulcanized rubber straps, including other Rubber B straps, is the Strength Infusion Technology whereby “carbon fiber molecules” are fused inside the strap during the vulcanization process increasing lateral and vertical strength, something needed for a heavy watch such as the DSSD.  I don’t really notice the strap being any more stiff with carbon molecules than the original Rubber B, but Rubber B indicates that the carbon is necessary to keep the strap strong for a heavy watch

Rubber B shared that Strength Infused Technology was initially designed for Richard Mille's RM11 wrist watch. The RM11 incorportes thin, louvered slats that would have been too soft and floppy for a normal vulcanized strap. Carbon fiber is infused into the rubber to reinforce the strap making the louvers much stiffer. According to Rubber B, the infusion is at a molecular level invisible to the human eye. This process is also used by Chanel on their J12 Black Ceramic Marine watch. Looking at the strap intricacies on the RM11 and J12 Marine shown below illustrate the need for stronger, but not necessarily stiffer rubber strap.

After wearing a Rubber B strap for a couple of weeks, I can safely say that a Rubber B strap makes the Rolex DeepSea SeaDweller a different watch to wear. The Rubber B strap prevents the DSSD from sliding around like a stainless Oyster strap does. Rubber B's rounded strap edges make the strap comfortable to wear. The Rubber B strap is easily adjusted because it incorporates Rolex’s stellar Glidelock clasp, and the rubber does give and flex somewhat when needed.  The Rubber B black strap picks up the matte black finish and black bezel insert making it appear that this strap belongs to any DeepSea SeaDweller  Every DSSD wearer should consider wearing a Rubber B strap as part of the Rolex DeepSea SeaDweller wearing experience.