Frequently Asked Questions

• When it comes to selecting a scuba cylinder, both aluminum and steel have their advantages and drawbacks. The right choice often depends on your diving style, environment, and personal preference
• Aluminum cylinders are typically more affordable than steel and come in a wide variety of colors and finishes. While they can corrode if moisture gets inside, the damage is usually far less severe than the rust that can develop in steel cylinders under similar conditions. However, aluminum tanks tend to be more buoyant. Additionally, aluminum cylinders are usually bulkier and sometimes heavier than steel cylinders of the same gas capacity.
• Steel cylinders, on the other hand, offer more gas in a smaller, more compact package. They’re often shorter and can weigh less than a similar-capacity aluminum tank. One of the biggest benefits of steel is its lower buoyancy. The main drawbacks of steel are that they can rust—inside and out—if not properly cared for, and they tend to be more expensive than aluminum alternatives.
• Ultimately, both cylinder types are reliable when used and maintained correctly. The best choice for you depends on your specific diving needs and the type of diving you plan to do.

A hydro test is what keeps your tank certified for safe use. Aluminum cylinders are considered current for 14 months from the test date, while steel cylinders are current for 18 months. After that, you’ll need to have the cylinder retested before a dive shop can fill it. You can find the hydro test date stamped on the cylinder’s shoulder (near the neck). It will show the month and year of the last hydro, for example, 05-24 for May 2024. Blue Steel/Kaplan Scuba makes every effort to ship the newest possible hydro date on all cylinders. However, due to high manufacturing quantities on various models and fluctuating sales volumes, hydro inventory will vary. Cylinders shipped within the 18-month (steel) and 16-month (aluminum) manufacturer date window are considered “current hydro.”

Blue Steel Scuba and Kaplan Scuba operate as wholesale scuba equipment distributors. We do not sell directly to the consumer. Please contact your LDS (Local Dive Shop) for inquiries and to purchase product. Thank you for your interest in Blue Steel and Kaplan Scuba products and for visiting our website.

Yes, we do sell valve parts, and soon we will be selling valve kits that are made up of replacement parts.

1. Do not put boots on the tank
   For easier installation, make sure to not place the cylinders boot on until after the band is properly installed
2. Use the Hardware in the kit
   When placing the bands around the cylinders, use the 18-8 SS bolts provided in the kit. Make sure everything is aligned properly before adding lubrication.
3. Apply Lubrication
   Coat the bolt threads with a lubricant. If you’re in a pinch, 3-in-1 Oil is a common household alternative. Apply the lubricant just ahead of where the nut will go.
4. Take Your Time
   Speed causes friction, and friction creates heat — the main cause of galling. To avoid this, tighten the nut slowly. Patience here will save you from getting stuck or damaged threads.

As a wholesale distributor only, Kaplan/Blue Steel has notified your local sales representative of this change, and they should be reaching out to you shortly. Please feel to contact your regional sales representative (list provided on the website) if you have questions or you can also contact our customer service department for details on this policy.