Hydraulic Buffer Seals – Shock-Absorption for Rod Seal Protection
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Buffer Seals
Depending on the application, a rod sealing system can consist of a rod seal and a buffer seal or only a rod seal. The main types of rod buffer seals are lip seals with back-up rings, lip seals without back-up rings, and o-ring energized glide ring seals. Buffer seals help absorb pressure spikes that occur in heavy-duty cylinders to protect the primary rod seals.
Molded in bronze-filled PTFE with an FKM energizer, this seal is used to protect the primary seal from damage caused by pressure spikes and excessive heat build up.
Bronze PTFE Buffer Material | 60 MM Nominal Inner Diameter | Buffer Seal
This U-cup style buffer ring offers an asymmetric sealing lip profile, chamfered sealing edges, and pressure relieving capabilities to prevent inner pressure entrapment when employed in a tandem sealing system. This rod buffer seal is designed to absorb impact pressure fluctuations under high-load conditions thus increasing the life of the primary seal.
Urethane Material | 2 1/2 in Nominal Inner Diameter | Buffer Seal
Molded in urethane and employing a back-up, this seal absorbs the shock of pressure spikes to protect the rod seal. The unique design relieves back pressure between the buffer and the rod seal. NOTE: ME = Merkel Equivalent.
Urethane Material | 65 MM Nominal Inner Diameter | Buffer Seal
Molded in PTFE with a rubber energizer, this seal absorbs the shock of pressure spikes to protect the rod seal.
70A Durometer | Filled PTFE Buffer Material | 60 MM Nominal Inner Diameter | Buffer Seal
Molded in PTFE with a rubber energizer, this seal absorbs the shock of pressure spikes to protect the rod seal.
70A Durometer | Filled PTFE Buffer Material | 35 MM Nominal Inner Diameter | Buffer Seal
Molded in bronze-filled PTFE with an FKM energizer, this seal is used to protect the primary seal from damage caused by pressure spikes and excessive heat build up.
Bronze PTFE Buffer Material | 80 MM Nominal Inner Diameter | Buffer Seal
Molded in bronze-filled PTFE with an FKM energizer, this seal is used to protect the primary seal from damage caused by pressure spikes and excessive heat build up.
Bronze PTFE Buffer Material | 110 MM Nominal Inner Diameter | Buffer Seal
Molded in bronze-filled PTFE with an FKM energizer, this seal is used to protect the primary seal from damage caused by pressure spikes and excessive heat build up.
Bronze PTFE Buffer Material | 50 MM Nominal Inner Diameter | Buffer Seal
Molded in bronze-filled PTFE with an FKM energizer, this seal is used to protect the primary seal from damage caused by pressure spikes and excessive heat build up.
Bronze PTFE Buffer Material | 90 MM Nominal Inner Diameter | Buffer Seal
Molded in PTFE with a rubber energizer, this seal absorbs the shock of pressure spikes to protect the rod seal.
70A Durometer | Filled PTFE Buffer Material | 22 MM Nominal Inner Diameter | Buffer Seal





