Common failure modes observed in retrieved downhole seals include extrusion damage indicated by nibbled edges and material deformation, chemical degradation evidenced by surface crazing, hardening, softening, or swelling, thermal damage shown by hardening, cracking, and loss of elasticity, mechanical damage from improper installation or interference with sharp edges, and RGD damage ch... https://globalsealstech.com/product-category/oil-gas-seals/downhole-completion-tools-seals/