There are 3 elements for a proper a SES seal function. The first is the interference between the seal jacket and the mating surface. The forces are relatively light. The seal jacket heel must be supported for the seal to properly stay in place and the lips to function properly.
The second force is the resultant forces of the spring energizer. The spring energizer forces can be light if friction is important or heavy if leakage is the primary concern. The spring force will be higher than the force caused by interference. The spring becomes the dominant force in applications with minimal to no pressure. The spring acts as the initial energizer and prevents the media from bypassing the seal contact surface.
The third force is the media pressure. The media pressure is higher than the combination of the interference and spring energizer and becomes the dominant force in many applications.
Types Of Spring Energizers Used In Seals
The types of spring energizers used in spring energized seals include:
- Helical Spring Seals
- Cantilever V-Spring Seals
- Canted Coil Spring Seals (see slant coil height under deflection)
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