Backup rings manufactured from PTFE or PEEK materials provide essential extrusion resistance for elastomeric seals in high-pressure downhole tool applications. These rigid rings position adjacent to primary seals preventing elastomer extrusion into hardware clearances under high differential pressure. Backup rings enable elastomeric seals to function reliably at pressures far exceedin... https://globalsealstech.com/product-category/oil-gas-seals/downhole-completion-tools-seals/