The BD profile is a non-symmetrical profile rod seal. Its rectangular
shaped cross section ensures stability in the gland. The O-ring energizer
functions as a spring to maintain sealing contact under low pressure or
vacuum applications. The knife trimmed, beveled lip does an excellent
job wiping fluid film. A secondary sealing lip is located below the
primary sealing lip, just above the base of the seal, to provide enhanced
sealing performance and ensure a tight, stable fit in the gland. Available
in Parker’s proprietary urethanes, the BD profile provides long life,
extrusion resistance, low compression set, shock load resistance and
increased sealing performance at zero pressure. The BD profile is
designed to be used as a stand alone rod seal or for use with the BR
or OD profile buffer seals for more critical sealing applications. Also
available with a positively-activated back-up.
Options: A back-up ring located in the heel of the BD profile can
be provided for enhanced extrusion protection. See part number
nomenclature for designating this option. Contact your local Zatkoff Seals & Packings representative for price and availability.