Hallite Rod Buffer Seal

DESIGN
The Hallite 653 single-acting rod buffer seal is designed to be used in conjunction
with a high-performance rod seal, such as the Hallite 605 and 621, to protect the
primary seal from shock pressure loading and high frequency pressure spikes in
the hydraulic system. The design allows oil to pass through to the rod seal while
holding back pressure spikes. The Hallite 653 is a patented product (European
patent no. 0427554BI; U.S.A. patent no. 5088747) that also allows pressure to
pass back into the system preventing a pressure trap between the rod seal and
the buffer seal. The Hallite 653 is an excellent pressure buffer option in heavy-duty
applications and offers extended sealing system life and performance.
The Hallite 653 is also interchangeable with common PTFE buffer seal housings.
The Hallite 653 is moulded in Hythane® 181, Hallite’s high-performance
polyurethane, for easy installation and excellent low temperature performance.
The Hallite 653 is also offered in a number of other high-performance
polyurethanes, such as the Hythane® 361.
The design also incorporates a polyacetal anti-extrusion ring to provide maximum
extrusion resistance against shock pressure loads.