Extrusion failure occurs when hydraulic seals deform through clearance gaps under high pressure, causing material damage and leakage. Soft seal materials, excessive clearances, and high pressures increase extrusion risk. Backup rings made from PTFE, polyester, or nylon support seals against extrusion forces. Anti-extrusion rings install on the low-pressure side of primary seals. Reduc... https://globalsealstech.com/hydraulic-seals/