AI-S-407-V anti-extrusion ring from Accumulators, Inc. is a genuine spare part used with bladder-type hydraulic accumulators to prevent bladder extrusion under pressure. According to Accumulators, Inc.'s catalog, the AI-S-407 family is specified for 2.5–15 gallon capacities and 3,000–6,000 psi service, indicating its suitability for mid-size to high-pressure hydraulic circuits. Anti-extrusion rings are not included in bladder kits, so this part is ordered separately to complete Accumulators, Inc. assemblies.
