Industrial AI-S-407 Anti-Extrusion Ring for Hydraulic Accumulator

AI-S-407 Anti-Extrusion Ring is a replacement component for bladder-style hydraulic accumulators, designed to prevent extrusion of the bladder by providing a defined seating surface around the bladder's top end. It is listed in Accumulators, Inc. spare-parts catalogs as AI-S-407 and appears in multiple elastomer configurations (including Buna-Nitrile variants), with designations such as AI-S-407-E and AI-S-407-V used in catalogs to denote alternative materials. Used with standard bladder assemblies, the ring forms part of the sealing interface at the fluid port region to maintain leak-free operation as pressure cycles. When replacing, verify compatibility with your accumulator model and elastomer specification recommended by the original equipment manufacturer to ensure reliable performance and bladder life.