Form-in-Place and Cure-in-Place Gaskets

A CGI gasket generally refers to a gasket construction associated with corrugated graphite or a comparable graphite-based sealing design, depending on the manufacturer’s terminology. The correct replacement depends on the flange, equipment, service medium, and original gasket properties. TDS Gasket Sealant Compound is intended for cure-in-place repairs where it can match OEM gasket properties and life expectancy.

A gasket may also be described as a seal, sealing element, packing, or gasket material, depending on the equipment and application. In transformer and substation work, the term may refer to a flange seal, valve packing, or replacement gasket material. The appropriate terminology depends on the component being repaired and the sealing method used.

A cure-in-place repair applies TDS Gasket Sealant Compound to the failed sealing or packing area, where it forms replacement gasket material after curing. The compound is designed for injection through a hydraulic gun into failed packing areas. This approach can repair leaks without dismantling the apparatus when equipment conditions permit.

The product information identifies applications including transformer pipe flanges, bushing flange leaks, drain valves on electric substation apparatus, flapper valve stem packing, butterfly valve stem packing, pinholes, weld seam cracks, and circuit breaker leaks. The repair method should be evaluated against the specific component and leak condition.

TDS Gasket Sealant Compound is identified for oil-resistant sealing applications and is used for leak repairs on transformer and substation apparatus. TDS also identifies sealant compatibility with transformer oil and SF6 gas. The equipment, leak location, and service conditions should be reviewed before selecting the repair approach.

TDS identifies repairs without dismantling apparatus as a key application benefit, and equipment can remain energized and in service during repair when conditions allow. Whether this is appropriate depends on the equipment, leak, work method, and site conditions. TDS technical personnel can assess the repair requirements and applicable procedure.