Why Leak Seal is
the ONLY Cost Effective Solution!

TDS Provides transformer and circuit breaker leak solutions around the world. Our proven experience and commitment to excellent customer service has made us the leak-sealing company of choice in the power industry.

Transformer Repair

Our skilled technicians repair all common transformer oil leaks likely to be encountered by utility maintenance personnel. Our repair methods can in most cases be performed without removing the equipment from service, resulting in substantial cost savings and increased flexibility to utility managers.

Circuit Breaker Repair

SF6 gas is expensive and has been designated a “greenhouse” gas by the EPA. Therefore, it is important for electrical utilities to control circuit breaker SF6 leaks. Our skilled technicians can address all sources of SF6 leaks, resulting in large cost savings for the utility by avoiding component disassembly and associated downtime.

An Environmental Solution

Sometimes repairing can make the most sense both environmentally and economically.

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Things you should know about us

EEO Employer

As a WOSB (Women Owned Small Business) TDS upholds diversity throughout and supports a culture of diversity.

Incident Free

TDS remains incident free; has zero (0) OSHA recordable injuries and supports a culture of safety.

Small Business

Our nimbleness and ability to adapt support a culture of change and innovation.

Environmentally Friendly

TDS supports energy providers throughout the US and abroad in their efforts to provide the cleanest, low cost, reliable power.

Community Minded

TDS encourages a culture of community within and through support of social causes and community volunteerism.


Contractor ID# 400-229026



From the Blog


“I appreciate the flexibility of the TDS crew to be able to get this leak taken care of.”   "Your TDS group has been wonderful to work with over the years, both the office and field personnel. The service that leak seal provides is very cost efficient (when compared to the traditional teardown reseal/regasket option), [...]

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Transformer Oil Leaks White Paper

Transformer Oil Leaks White Paper The oil-filled large power transformer is still the workhorse of the Electric Power Industry. Even with the advances in the technology of other insulating media, the large oil-filled transformer is still the tried and true major component of the Transmission-type electric substation. Additionally, the oil filled transformer is still the [...]

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