Gasket Sealing Applications
For years you have trusted The Gund Company to supply the best quality transformer insulation materials.
Transformer gasket materials are so critical to the life and performance of your transformer; it makes sense to use the best materials for sealing applications as well. Besides the potential for catastrophic failure, improper sealing can lead to oil contamination, damaging insulation materials and significantly reducing the life of a transformer. Regardless of the transformer, our application engineering expertise can help our customers understand their options for gasket material selection.
Transformers play a critical role in the efficiency and distribution of power to the community.
Including traditional transformer maintenance, re-gasketing can help maintain the transformer’s dielectric strength, prevent oxygen, nitrogen, and/or moisture leaks, prevent oil contamination, and more…
Regardless of the transformer, our application engineering expertise can help our customers understand their options for gasket material selection.
| Oil-Filled Transformer Gasket Sealing Applications | ||
|---|---|---|
| Tap Changer Gaskets | Gauge Gasket | |
| Handhole Gasket | Pressure Relief Gasket | |
| Manhole Gasket | Drain Valve Gasket | |
| Bushing Gasket | Feed-Through Gasket | |
| Radiator Valve Gasket | Pressure Relay Device Gasket | |
| Tank Gasket | Oil Filling Connection Gasket | |
| HV Turret Gasket | Valve Gasket | |
| Access Cover Gasket | Output Plate Gasket | |
| Header Tube Extension Gasket | Tank Cover Gasket | |
Gasket Types
Regardless of the application, type, or material preference, The Gund Company can assist in designing, material selection, and fabricating services for your needs.
| Key Materials for Transformer Gaskets & Seals | |||
|---|---|---|---|
| Key Properties | Nitrile | Fluoroelastomer | Fluorosilicone |
| Color | Black | Brown | Blue |
| Application | General Purpose | High Temperature | Low Temperature |
| Density (g/cc) | 1.225 | 2.192 | 1.475 |
| Brittle Point (°C) | -35 | -20 | -60 |
| Tensile Strength (MPa) | 13.2 | 12.1 | 10.1 |
| Elongation | 348% | 198% | 292% |
| Compression Set (%) | 15% | 10% | 16% |
| Operating Temperature (°C) | -30 to 100 | -20 to 200 | -55 to 175 |
| Durometer (Shore A) | 70 | 75 | 70 |
| Volume Swell (% – 70 hr @100°C) #1 Oil | -8 | +13 | +5 |
| Oil TR-10F (°C) | -27.8 | -15 | -56.3 |
Additional Materials
Cork & Nitrile (Rubber)
A combination of materials that are molded into sheets or calendared into rolls for fabrication meets customer requirements.
Cork
Perfect for gaskets with low to medium torque loads from automotive fluid seals, gearboxes, oil seals, and valve covers. Available in roll or sheets to fit your application.
High-Temperature Fiber
A compressed sheet of synthetic fiber and a Nitrile binder for applications requiring high heat and fluid resistance exhibiting excellent sealability and good creep relaxation.
The Gund Company offers a wide range of insulating gaskets and seals for all your transformer maintenance and gasketing needs. Contact us today with material, application, or quote requests.
