Permanent packers use bake-on bonded elements for 20+ year life, with HNBR cured at 350°F to L80 casing. Halliburton’s Perma-Series integrates wire-wrapped screens, sealing 15,000 psi in gravel packs. Element durometer gradients (80–95 IRHD) optimize setting force distribution. In deepwater GoM, these packers isolate 30 zones, boosting production 30% versus cased-hole completions. https://globalsealstech.com/about-us/