Hydraulic Seals for Hydroelectric Industry Use

In the hydroelectric industry, oil spills are a persistent concern. That’s why Specialty Sealing Technologies wants to help you keep hydraulic oil out of water with our high-quality hydraulic seals for hydroelectric industry use.

We understand the effort it takes to work in the hydroelectric industry, and worrying about faulty seals only adds to the stress. That’s why we want to provide you with a wide range of superior parts to make sure your equipment runs smoothly.

Our Products

We offer a variety of turbine seals and other products to ensure your machinery is safe and efficient. We know how important the proper seal is; ineffective seals can cause spills, property damage, and money loss, which is why we give you the right type and fit of seal to keep your equipment in prime condition.

Our prices are competitive too, meaning you get what you need at a better price and quality. We also won’t charge you a mold or set-up charge to ensure that your product is right for you. You can request a quote right on our website!

Our Service

We want you to have the right seals at the time you need them, which is why we operate 24/7 to make sure your needs are always met; you can get your quote in less than 12 hours. Our deliveries are always fast and efficient as well so you don’t have to wait to keep your machinery working.

We have over 30 years of hands-on experience in this field, and we know how to get you what you need. You can find the right seals for your Kaplan, Bulb, Francis, and Pelton units, just browse our other products, give us a call, or send an email for our seal recommendations. Call at (479) 857-6977 or email at john@thesealguy.com.

Turbine Styles

  • Kaplan
  • Francis
  • Bulb
  • Reversible Pump
  • Pelton Wheel

Kaplan Units

Their applications include blade seals (trunnion seals), wicket gates, turbine shafts, brakes, and servomotors.

Turbine Shaft Seals

We offer a range of braided packings with the common styles loaded with either Teflon or graphite. Both of them are supplied with a built-in breakout lube for initial start-up. Otherwise, we offer a spring energized bearing seal.

Adjustable Kaplan Blades

Known in the industry as Kaplan blade seals or trunnion seals, these products come in different designs depending on the available seal housing depth.

  • Back-to-Back V-Pack
    This style of packing is produced completely from rubber and molded to size and height. The packing set offers double redundancy in both directions using a bidirectional center gland ring. When the packing is supplied in split form, the intermediate rings are cut at a standard 45 degrees, and the center gland ring is cut with a diamond cut to reduce leakage path. The all-rubber design is used to avoid possible shrinkage when using standard fabric and rubber rings.
  • Floating Back-to-Back V-Pack
    This floating style does not require an initial compression on the seals to operate. It also offers the double redundancy and bidirectional ring. For OEM equipment, we supply the endless seal sets. On the other hand, for in-field installations, we supply a split seal design that is joined in the field, thus making it an endless seal set. The split set rings are supplied with a diamond cut for easy and proper alignment.
  • Floating U-Cup
    This style of seal is used for applications with a shallow packing box when you can only put one seal in each direction.

Bulb Units

The three styles of blade seals (trunnion seals) used on a Kaplan unit are also used on bulb units.

Wicket Gates

Can supply floating U-cups, floating V packing in standard material or from all rubber due to low pressure.

Wicket gates are used on Kaplan, Francis, bulb, and reversible units. They are low-pressure sealing applications recommended by our professionals.


We have supplied several seal designs and materials for this particular application.
Our team recommends using a floating V-pack, a standard V-packing, or a floating U-cup.


  • Servomotors
  • Wicket Gates
  • Gate Seals
  • Adjustable Blades
  • Brakes
  • Gates
  • Turbine-Hydro and Turbine-Francis Turbine
  • Transformers

Recommended Seals

  • V-Packings
  • Floating V-Packings
  • U-Cups
  • C-Packings
  • Back-to-Back V-Packings
  • BladeSeal Dual
  • BladeSeal Twin
  • J Seals - Music Note
  • Shaft Braided Packings
  • Gasket Materials