DSTI
DSTI (Dynamic Sealing Technologies) manufactures engineered fluid rotary unions, electrical slip rings, and integrated fluid-plus-electrical sealing solutions for rotating equipment. The company serves aerospace & defense, oil & gas, medical, heavy equipment, factory automation, and semiconductor customers in 60 countries.
- Company typePrivate
- Founded2001
- HeadquartersAndover, United States
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
What DSTI does
DSTI (Dynamic Sealing Technologies, Inc.) is a US-based engineered fluid sealing and transfer solutions manufacturer specializing in fluid rotary unions (rotary joints) and electrical slip rings that move fluid, power, signal, and data between stationary and rotating structures. Founded in 2002 and headquartered in Andover, Minnesota, the company operates additional manufacturing at its SRS division in Olean, New York (acquired 2005, with Blakeslee Technologies merged in 2007). DSTI serves aerospace & defense, oil & gas (onshore and offshore), medical, heavy equipment, factory automation, alternative energy, semiconductor, and food & beverage industries through standard in-stock products (GP Series, HVH Series) and custom-engineered assemblies, including integrated fluid-plus-electrical solutions and IP65-rated protective enclosures (SRPE).
The company's underlying technology centers on proprietary hydrodynamic sealing (developed 2004) for high-speed and high-pressure hydraulic environments, with cryogenic rotary unions qualified for NASA's Robotic Refueling Mission aboard a 2018 SpaceX flight to the ISS. Supporting protocols include EtherCAT, Ethernet/IP, Profinet, Profibus, and Sercos III for factory automation applications. The company holds ISO 9001:2015 certification (TUV) and complies with FDA and 3A sanitary standards for food, beverage, and pharmaceutical applications. Troy Land was promoted to President in September 2025.
DSTI operates a sales-led go-to-market with a formal RFQ process assigning dedicated sales engineers to each project, supported by a network of regional distribution partners across Europe (Spain, Italy, Turkey, Switzerland) and Asia (South Korea, China). The company reaches customers in 60 countries and has documented 356 custom projects, with named enterprise customers including NASA, GE, Honeywell, Halliburton, Chevron, Boston Scientific, Medtronic, Caterpillar, 3M, GM, Bobcat, Bosch, Siemens, Canon, and Goodyear. As a wholly-owned subsidiary of Kadant (NYSE: KAI), DSTI combines operational independence as a focused fluid-sealing specialist with the distribution and capital resources of a diversified industrial conglomerate.
DSTI firmographics
Firmographics- Name
- DSTI
- Legal name
- Dynamic Sealing Technologies, Inc.
- Website
- https://www.dsti.com
- Company type
- Private
- Founded year
- 2001
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- DSTI (Dynamic Sealing Technologies) manufactures engineered fluid rotary unions, electrical slip rings, and integrated fluid-plus-electrical sealing solutions for rotating equipment. The company serves aerospace & defense, oil & gas, medical, heavy equipment, factory automation, and semiconductor customers in 60 countries.
- Ownership category
- akta.pro rank
DSTI industry classification
Industry- Product category
- Fluid Sealing Components
- NAICS
- Other General Purpose Machinery Manufacturing (3339), Mechanical Power Transmission Equipment Manufacturing (333613)
- SIC
- General Industrial Machinery & Equipment (3560)
- akta.pro primary industry
- Linear Motion & Mechanical Power Transmission (Ball/roller screws, linear guides, bearings, couplings) (IMAHAGAM)
Keywords
Where DSTI is headquartered
LocationHeadquarters
- HQ city
- Andover
- HQ country
- United States
- HQ region
- North America
Offices8 records
Markets served
DSTI business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Fluid Rotary Unions: Standard and custom fluid rotary union products for sealing and transferring fluid from stationary sources to rotating parts. Products transfer water, air, hydraulic oil, coolant, steam, and other media types. Both in-stock standard products and custom-tailored solutions are offered.
- Electrical Slip Rings: Standard and custom electrical slip ring products for transferring power and data from stationary to rotating structures. Includes IP65 rated protective enclosures and combination assemblies with fluid rotary unions.
- Custom Solutions & Engineering Services: Custom-engineered fluid sealing solutions for complex, high-risk applications. Includes design, manufacturing, testing, validation, and qualification services from concept to delivery.
- Value-Added Products and Services: Single-source solution from design and manufacturing through testing and qualification. Includes in-house capabilities such as CNC precision machining, welding, assembly, testing, and inspection services.
- Seal and Bearing Kits: Replacement seal and bearing kits available for do-it-yourself rebuilding and repair of rotary union products.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Standard Products - In-Stock |
| One time/ perpetual license | Multi-year contract | Custom Solutions - Project-Based |
Go-to-market motion1 record
Distribution channels5 records
Marketing channels6 records
DSTI product offering
Product offeringCore offering
DSTI designs, manufactures, and integrates fluid rotary unions (rotary joints) and electrical slip rings that transfer fluids (water, air, hydraulic oil, coolant, steam) and power/data from stationary sources to rotating structures. The company offers both standard in-stock products and fully custom-engineered solutions across industries including aerospace, defense, oil & gas, medical, heavy equipment, and semiconductor manufacturing.
Product overview
DSTI (Dynamic Sealing Technologies) is a manufacturer of engineered fluid sealing and transfer solutions for rotating applications. The company offers a portfolio of products organized around three core segments: fluid rotary unions, electrical slip rings, and value-added products and services. The main product categories include Standard Rotary Unions (in-stock, including GP Series and HVH Series high-flow variants) and Custom Rotary Unions for exact application requirements, alongside Standard and Custom Electrical Slip Rings. The company also provides integrated Fluid + Electrical Solutions combining both technologies, plus IP65-rated Protective Slip Ring Enclosures (SRPE) for harsh environments. Custom Solutions serve as the primary differentiator, with capabilities including design, manufacturing, testing, and qualification under one roof. The company was founded in 2002 and has expanded through acquisitions (Scott Rotary Seals in 2005, Blakeslee Technologies in 2007) and continuous product development including the High Pressure Inline (HPI) Fluid Swivel for offshore oil and gas applications.
Differentiator
Problem solved
Functional benefit
Products and services
- Fluid Rotary Unions Devices that seal and transfer fluid (water, air, hydraulic oil, coolant, steam, and other media) from stationary sources to rotating parts. Used across factory automation, heavy equipment, machine tool, medical, oil and gas, defense, and aerospace applications.
- Electrical Slip Rings
Quantifiable outcome
- Cryogenic rotary union launched into space aboard SpaceX Rocket for NASA's Robotic Refueling Mission (RRM3)
- +1 more outcomes
Companies that use DSTI
Customer profileNamed customers15 records
Segments6 records
Ideal customer profiles1 record
DSTI technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration7 records
Feature6 records
DSTI partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core and regional.
- Kadant EuropecoreCollaborative training partnership announced in April 2025 to enhance rotary union solutions across Europe. Leverages combined expertise for improved customer outcomes.
- JKE ROBOTICS, S.L.regionalSales partner for Spain and Portugal. Located at Abanico de Plentzia, 176, E-48620 Plentzia (Bizkaia), Spain. Provides local sales and support for DSTI products in the Iberian Peninsula.
- Servotecnica S.p.A.regionalSales partner for Italy. Located at Via Majorana, 4, 20834 Nova Milanese (MB), Italy. Provides local sales and support for DSTI products in Italy.
- IMB ElectricregionalSales partner for Turkey. Located at Orta Mah. Yeni Maltepe Cad. Alba San. Sit. D Blok No: 282, PK: 34030 Bayrampasa, Istanbul, Turkey. Provides local sales and support for DSTI products in Turkey.
- TDS Precision Products GmbHregionalSales partner for Switzerland and Liechtenstein. Located at Industriestrasse 1a, CH-8157 Dielsdorf, Switzerland. Provides local sales and support for DSTI products in Switzerland and Liechtenstein.
- COVIS Co. Ltd.regionalSales partner for South Korea. Located at #804, Intellium Centum Building, Busan, South Korea. Provides local sales and support for DSTI products in South Korea.
- Jereh GroupregionalSales partner for China. Located at No. 27 Jereh Road, Laishan District, Yantai, China. Provides local sales and support for DSTI products in China.
- KadantcoreDSTI is a Kadant Company. Kadant is the parent company that acquired Dynamic Sealing Technologies, enabling access to Kadant's global resources and distribution network including Kadant Europe for collaborative training and enhanced rotary union solutions.
Scale indicators4 records
Recent moves8 records
Expansion highlights5 records
DSTI competitors and assessment
Company assessmentDirect peers
- Deublin Company: Deublin is the recognized global market leader in fluid rotary unions, with a catalog that directly overlaps DSTI's standard rotary union lines (water, air, hydraulic, steam media). It is the most direct competitor on rotary union spec sheets and serves the same heavy equipment, machine tool, and industrial OEM customers.
- Schleifring GmbH: Schleifring is a specialized slip ring manufacturer based in Germany serving medical imaging (CT scanners), semiconductor, and aerospace applications with very high-circuit-count assemblies. It is the most direct European competitor to DSTI in precision medical and high-end industrial slip ring programs.
- Rotary Systems Inc. Rotary Systems manufactures rotary unions, swivel joints, and rotating electrical contacts for industrial, oil & gas, and crane applications. Its catalog and target customer base (machine tool, fluid handling, offshore) overlap DSTI's core business, making it a clear comparable in standard and custom rotary union bidding.
- Conductix-Wampfler: Conductix-Wampfler (Delachaux Group) manufactures industrial slip rings, motorized cable reels, and energy/data transmission systems for cranes, port equipment, and wind turbines. It competes with DSTI for slip ring integration assignments in heavy industrial, alternative energy, and factory automation programs.
- Stemmann-Technik (Wabtec): Stemmann-Technik, part of Wabtec, produces industrial slip rings, grounding systems, and pantograph components heavily used in rail, wind turbine, and port crane applications. It competes with DSTI's slip ring offering in wind pitch control and rail equipment programs.
- Kadant Johnson: Kadant Johnson is a sister subsidiary under parent Kadant (NYSE: KAI) that designs rotary unions and syphons primarily for pulp and paper machinery. As the sibling operating company under the same parent, it overlaps DSTI's core rotary union technology in process-industry accounts and competes for the same engineering talent pool.
- Moog Inc. Moog operates a slip ring and motion control business serving aerospace, defense, and industrial markets, directly overlapping DSTI's electrical slip ring and integrated fluid+electrical offering. Moog's broader electromechanical portfolio competes for the same mission-critical RFQs DSTI wins in aerospace and medical robotics.
- Mercotac Inc. Mercotac specializes in low-wear electrical slip rings and rotating contacts using mercury-free liquid metal technology, sold through industrial distribution. It competes with DSTI's standard capsule slip ring and through-bore product lines for factory automation, packaging, and instrumentation accounts.
Broad incumbents
- Cobham Advanced Electronic Solutions (TransDigm): Cobham (now part of TransDigm) supplies high-reliability slip rings and motion control components for military and commercial aerospace platforms. While larger and broader than DSTI, it overlaps on military/aerospace slip ring RFQs where DSTI wins programs like the NASA RRM3 mission.
- Barksdale Control Products (Crane Co.): Barksdale (a Crane Co. division) manufactures pressure switches, transducers, and fluid control components used in heavy industrial and oil & gas applications. While not a direct rotary union competitor, it represents the broader industrial fluid-handling incumbents DSTI encounters in customer engineering specifications.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks4 records
Key highlights7 records
Customer concentration
DSTI social profiles
Digital presenceDSTI compliance and trust
Trust signalCompliance2 records
DSTI financial estimates
Financial estimateRevenue estimate
Valuation estimate
DSTI leadership team
Management profileNumber of profiles
Profiles1 record
DSTI subsidiaries and ownership
Company hierarchySubsidiaries2 records
DSTI funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
DSTI M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about DSTI
What does DSTI do?
DSTI designs, manufactures, and integrates fluid rotary unions (rotary joints) and electrical slip rings that transfer fluids (water, air, hydraulic oil, coolant, steam) and power/data from stationary sources to rotating structures. The company offers both standard in-stock products and fully custom-engineered solutions across industries including aerospace, defense, oil & gas, medical, heavy equipment, and semiconductor manufacturing.
Is DSTI a public or private company?
DSTI is a private company. It is classified as corporate owned and is currently operating.
When was DSTI founded?
DSTI was founded in 2001. It employs 101 to 250 people.
Where is DSTI based?
DSTI is headquartered in Andover, United States, in the North America region.
How does DSTI make money?
Five revenue lines are on record. Fluid Rotary Unions are the primary driver. The others are electrical Slip Rings, custom Solutions & Engineering Services, value-Added Products and Services and seal and Bearing Kits.
Who are DSTI's main competitors?
Direct peers on record are Deublin Company, Schleifring GmbH, Rotary Systems Inc., Conductix-Wampfler, Stemmann-Technik (Wabtec), Kadant Johnson, Moog Inc. and Mercotac Inc.. Broad incumbents are Cobham Advanced Electronic Solutions (TransDigm) and Barksdale Control Products (Crane Co.).
Does DSTI have an API?
No public API is recorded for DSTI.
What industry is DSTI in?
DSTI's product category is Fluid Sealing Components. Its primary akta.pro industry code is IMAHAGAM, Linear Motion & Mechanical Power Transmission (Ball/roller screws, linear guides, bearings, couplings). Its NAICS code is 3339 and its SIC code is 3560.