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PARKER BS ROD SEAL

    BS Rod Seal

    Descriptions

    The profile BS Ultrathan® rod seal is a lip seal with a secondary sealing lip and tight
    fit at the outer diameter. Wear and dry run are largely prevented by the additional lubricant retained under the seal, created by the secondary lip. In some cases this second sealing lip may even act as a substitute for a costly tandem-arrangement when
    complete sealing under certain working conditions can only be achieved by two seals
    placed one behind the other in separate housings.
    For telescopic cylinders, we recommend the version with a 4-mm profile width.

    Features

    • Excellent sealing performance due to
    elongated contact area and multiple
    sealing lips.
    • Exceptionally high static and dynamic
    sealing performance.
    • Enhanced sealing performance in nonpressurized conditions.
    • Penetration of air into the system is
    largely prevented.
    • Robust seal profile for harshest operating conditions.
    • Extreme wear resistance.
    • Easier installation.
    • Insensitive to pressure peaks.
    • Improved lubrication due to pressure
    medium deposit in the dynamic contact
    area.
    • High extrusion resistance.
    • Excellent media resistance in case of
    suitable compound selection.
    • Suitable compounds available for
    special requirements of the chemical
    process industry.
    • Suitable compounds available for special requirements of the food processing
    industry.
    • Dimensions according to ISO 5597.
    • Short radial assembly depth.
    • Installation in closed and undercut
    housings.
    • Additional sizes of machined products
    available on short notice.

    Range of application
    Mainly for the sealing of piston rods and plungers in heavy duty applications in mobile and stationary hydraulics. The dimensions mainly conform to the requirements of
    ISO 5597 and ISO 3320 for housing and diameters respectively.

    Operating pressure ≤ 400 bar
    Operating temperature -35 °C to +110 °C
    Sliding speed ≤ 0.5 m/s
    Media Hydraulic oils based on mineral oil

    Compounds
    The compound Ultrathan® P5008 is a Parker material based on polyurethane with a
    hardness of approx. 93 Shore A. Its main advantages in comparison with other polyurethane materials currently available on the market are the increased heat resistance
    and the lower compression set.
    For media containing water, we recommend our hydrolysis-resistent polyurethane
    compound P5001.
    Installation
    The seals should have an axial clearance (see columns H and L). To avoid damage at
    the sealing lips, the seals should not be pulled over sharp edges during installation.
    Normally these seals may be snapped into closed grooves. Where access is restricted
    special assembly tools may be required. Proposals for the design of such tools will be
    provided on request. For gap sizes see chapter “Maximum Gap Allowance”.

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