Prevent Transformer Oil Leaks Before They Become Major Repairs

Oil leaks are often viewed as cosmetic issues, but they frequently indicate deteriorating gasket
materials that continue to worsen over time. Addressing oil leaks early helps avoid:

● Moisture contamination of insulating oil
● Accelerated cellulose insulation aging
● Increased acid formation and oxidation
● Reduced dielectric strength
● Environmental cleanup costs
● Emergency transformer repairs
● Unplanned outages

Replacing aging gaskets during scheduled maintenance is significantly more cost-effective than repairing damage caused by prolonged leakage.

Comprehensive Transformer Regasketing Services

MVA performs complete transformer gasket replacement on a wide variety of liquid-filled
transformers. Our experienced technicians carefully remove deteriorated gasket material,
prepare sealing surfaces, install new high-quality gasket materials, and verify proper sealing
before the transformer is returned to service.

Our regasketing services include:
● Main tank gaskets
● Radiator gaskets
● Valve gaskets
● Inspection covers
● Manways
● Conservator connections
● Cooling system connections
● Access panels
● Instrument and accessory seals
● Bushing flange gaskets

Every project is performed using proven procedures designed to maintain transformer reliability while minimizing outage time.

Regasketing Combined with Transformer Maintenance

Many customers choose to perform transformer regasketing during planned outages when
additional maintenance is already scheduled. MVA can combine regasketing with other
transformer services, including:

● Transformer oil processing
● Vacuum filling
● Electrical diagnostic testing
● Bushing replacement
● Hot oil reclamation
● Internal inspections
● Field repairs
● Transformer assembly

Completing multiple maintenance activities during a single outage reduces downtime and
improves overall maintenance efficiency.

Protect Your Transformer Investment

Power transformers represent significant capital investments that are expected to operate
reliably for decades. Proper gasket maintenance plays an important role in preserving insulating oil quality and preventing the internal degradation that leads to costly failures.
Whether you’re addressing an active oil leak or replacing aging gaskets as part of a
preventative maintenance program, MVA has the experience and technical expertise to perform transformer regasketing safely and efficiently.

Frequently Asked Questions

How do I know if my transformer needs regasketing?
Common signs include visible oil leaks, deteriorated or cracked gaskets, low oil levels, recurring seepage after cleanup, or increasing moisture levels found during transformer oil analysis.

Can a small transformer oil leak become a major problem?
Yes. Even minor oil leaks can allow moisture and oxygen to enter the transformer, accelerating oil oxidation, reducing dielectric strength, and shortening insulation life.

Does MVA perform regasketing on energized transformers?
Regasketing is typically performed during planned outages to ensure personnel safety and allow proper replacement of gasket materials while maintaining transformer integrity.

Can regasketing be combined with oil processing?
Absolutely. Many customers schedule transformer oil processing, vacuum filling, electrical
testing, and regasketing together to maximize outage efficiency and restore transformer
condition.