DSTI is at the forefront in high performance custom fluid sealing solutions for the world's most challenging applications.

Between our proven technology and long-term experience working with highly complex applications, we aim to achieve our customers' project goals - reducing costs, increasing efficiency, and decreasing risks.

Our core business segments are fluid rotary unions, electrical slip rings, and value-added products and services providing a single-source solution from design and manufacturing through to testing and qualification - all under one roof. We are located in North America and Europe with a team of distribution partners and technical support specialists worldwide.

Our Vision

To be a worldwide leader in engineered fluid solutions.

Our Mission

To build product through the common and shared principals of process, quality, safety, fiscal responsibility, and continual improvement while maintaining a balance of work, life and fun.

Our Values

Trust - Our relationships will be built on believing in one another.

Communicate - We'll communicate honestly, openly and positively.

Collaborate - We will realize greater results as a team than we ever can individually.

Evolve - Our responsibility is to keep changing, driven by our customers' demands.

    The Faces Behind DSTI

  • Name: Ashley - DSTI Department: Human Resources
    AshleyHuman Resources
  • Name: Rob - DSTI Department: Machining
  • Name: Greg - DSTI Department: Engineering
  • Name: Penny - DSTI Department: Administration
  • Name: Steve - DSTI Department: Maintenance
  • Name: Eric - DSTI Department: Machining


  1. DSTI History - 2002

    DSTI Founded

    Dynamic Sealing Technologies, Inc. (DSTI) starts and launches GP series rotary unions; an industry first with standard fluid rotary union and electrical slip ring options allowing for off-the-shelf custom configurations

  2. DSTI History - 2004

    Hydrodynamic Sealing Technology

    Develops first hydrodynamic sealed fluid rotary unions for use in high speed and high pressure hydraulic applications

  3. DSTI History - 2005

    Scott Rotary Seals (SRS) Acquisition

    Acquires Scott Rotary Seals (SRS) in Olean, NY. Founded in 1960, SRS manufactures complex fluid sealing products used in a wide range of similar industrial applications to DSTI. Products include rotary timing valves (RTVs) and custom rotary unions. SRS operates as a separate division of DSTI and continues to provide its expertise in the rotary timing valve and custom rotary union markets

  4. DSTI History - 2007

    Blakeslee Technologies Inc. (BT) Acquisition

    Acquires Blakeslee Technologies Inc. (BT), founded in 2000. BT operations merge with existing operations at SRS allowing SRS to become the largest provider of RTV products worldwide

  5. DSTI History - 2008

    Relocation & Facility Expansion

    Relocates and expands global headquarters to Andover, MN, United States. Invests in improved enterprise resource planning (ERP) system

  6. DSTI History - 2010

    HVH Series Rotary Union Product Line Launch

    Launches new high flow volume HVH series rotary union standard product line

  7. DSTI History - 2011

    Facility Expansion

    Expands, adding 43,000 sq. ft. [3,995 sq. m] to its manufacturing, assembly, and testing facilities

  8. DSTI History - 2012

    10 Year Anniversary

    Celebrates company expansion and 10 year anniversary. Adds in-house welding capabilities to cover a complete range of welding services

  9. DSTI History - 2013

    Voted Top Workplace in Minnesota

    Gets named one of the Star Tribune's 2013 Top Workplaces in Minnesota

  10. DSTI History - 2014

    High Pressure Inline (HPI) Fluid Swivel Product Line Launch

    HPI product series launches; developed for complete rotation of high pressure topside and subsea flexible lines critical for offshore production operations

  11. DSTI History - 2015

    Product Load Testing Capability Expansion

    Develops advanced custom test equipment allowing for bending, load, and pressure testing on products up to 55" [139.7 mm]

  12. DSTI History - 2016

    Advanced Systems & Initiatives for Improving Safety

    Improves incident / near-miss and injury reporting and Safety Data Sheets (SDS) systems, and enhanced promotion of Behavior-Based Safety (BBS) culture


Distribution Partners

DSTI Distribution Partners Map


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