![](https://ahpseals.com/wp-content/uploads/2016/09/internal-sealing-trapezoidal-back-up-ring.jpg)
ST20
Internal Sealing Trapezoidal Back-up Ring
Positively activated design to resist internal seal extrusion/damage in ultra-high pressure sealing applications.
Internal Sealing Trapezoidal Back-up Ring
Positively activated design to resist internal seal extrusion/damage in ultra-high pressure sealing applications.