Buffer seals absorb pressure shocks in rod-end glands, protecting primary rod seals. Thick cross-sections and fabric reinforcement handle spikes up to 20,000 psi momentarily. In oilfield accumulators, they prevent seal extrusion during rapid cycling. Polyurethane buffers with metal inserts add rigidity. They extend system life by damping pulsations from valves. Installation requires a... https://globalsealstech.com/hydraulic-seals/