O-rings remain the most common seal type in downhole tools due to their simplicity, cost-effectiveness, and versatility. Molded in standard AS568 or custom sizes, they fit grooves in pistons, mandrels, and housings. High-performance compounds resist extrusion under high differential pressure while maintaining low friction for dynamic applications. Backup rings enhance extrusion resist... https://globalsealstech.com/product-category/oil-gas-seals/downhole-completion-tools-seals/