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I don't know the difference between any of the suits you mentioned above, but I do know that the most important thing when acquiring a wetsuit is how it fits. The second most important thing is....how it fits. In fact, fit is such a priority that nothing else matters if the fit isn't...

At one time I had purchased, used, and/or handled every dryglove ring system designed to integrate with the Si-Tech QCS Oval wrist ring system. The Ellipse ring system works very similar to how the Waterproof Ultima DGS works. The primary issue I had with the Ellipse rings is that the oval...

When I lived in Europe I regularly dived with a similar setup: steel backplate, 12L steel cylinder and a slung 3L pony bottle. I used (and still use) a Dive Rite Voyager wing. Dive Rite specs this wing as having 35lbs (15.9kg) of lift. I prefered the 35lb wing as I believe it gave me a better...

Neoprene neck seal has been available by Waterproof for the Si-Tech neck ring systems for a few years now. I don't believe just any neoprene neck seal can be used...my understanding is the Waterproof neoprene neck seal is thinner around its base so that the yellow retaining ring of the neck ring...

See my post (post #6) at the following discussion thread, where I mention the difference between Si-Tech's silicone seals and there new Elastoseals made from TPE (thermoplastic elastomer): Silicone seals vs. Elastoseals -Z

Yes, you have your history about Si-Tech and Waterproof seals correct, and yes, Si-Tech has begun making seals from TPE (thermoplastic elastomer). Both silicone and TPE materials have similar properties in that they are elastic, hypoallergenic, etc. TPE is apparently more cost effective to make...

Don't know....I am still using the original Si-Tech silicone neck seal that came with my drysuit. Before moving back to the US from Europe, I stocked up on spare wrist and neck seals as they are at least half the cost in Europe than in the US...I purchased some Si-Tech and Waterproof neck seals...

Yes they will fit. The seals for the si-tech quickneck are the same for the 1st gen version of the ring system, the necktite, as well as the 3rd generation, the o-rust. The Waterproof version of the seals are also compatible across all 3 generations of the si-tech neck ring system. The...

The smallest profile would be to have the Si-Tech QCS Oval wrist rings installed and couple it with the Fourth Element Ellipse dryglove rings. The Ellipse works similar to the Ultima DGS but retains the system's low profile oval shape. I am a fan of, and currently use the Rolock 90. Prior to...

The air does not need to penetrate the neoprene in an equalized glove....the closed cells of the neoprene provide its insulative property...it will maintain this insulative capacity as long as it is not compressed, which is the point of equalizing the dryglove. I edited my second question...

Why would a neoprene glove liner compress and lose some of their insulative value inside an equalized dryglove as one descends? Why would a lofted glove liner not compress under the same condition, an unequalize dryglove? If the dryglove is equalized the neoprene glove liner will not be...

When you equalize your suit and gloves you are adding air at your regulator's intermediate pressure which is most likely higher higher than ambient pressure. This allows your suit and gloves to inflate. If you had neoprene gloves on your hands as a glove liner inside a dryglove, the neoprene...

Do you have anything that disrupts the wrist seal to allow warm air to travel into your gloves? I use the Rolock 90 system but use the thin silicone tubes that came with the Ultima DGS set that I used to use. The thin flexible tubes allow warm air to pass into the gloves by raising my arms...

Call these guys and ask, they should have particular insight into what you are asking about: -Z

Dive Gear Express (DGX) sells the Rolock 90 system: https://www.divegearexpress.com/rolock-90-kit-only-no-wrist-seals -Z

Your rings look to be the Waterproof Ultima DGS, but there is a small chance they could be the Diving Concept dryglove ring system. Diving Concept rings were the original patent that Waterproof bought and slightly modified when they created the Ultima DGS. I think the modification was a slight...

That means your suit has factory installed Si-Tech QCS Oval wrist rings. That is a good thing. While the Ultima DGS and Ultima Twist rings are a decent system, quite a few of us that have used this system have moved on to the Rolock 90 dryglove ring system. The Rolock 90 system is easier to...

From what I can tell l, the Waterproof D7 Pro came with Si-Tech's first generation neck ring system, the Necktite. Depending on how old the suit us, it could have the QCS Oval wrist ring system installed or it could have the older Quick Cuff rings installed. The Waterproof Ultima DGS and the...

The ultima twist is most definitely compatible if the Ultima DGS is compatible.. There is no difference between the ultima dgs and the ultima twist other than the extended tabs on the glove rings meant for prying the two halves of the system apart after a dive. Everything else about the two...

Pic is an industry insider term...I would bet the OP has no clue what everyone who has used this term is even referring to. PIC=Positive Identification Card This was a card/info packet purchased by PADI dive instructors and filled out and signed by the instructor upon a student's succesful...