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PARKER A2 PNEUMATIC SEAL

    Pneumatic Seal A2

    The function of the pneumatic wiper ring A2 is to prevent dust, dirt, grains of sand and metal shavings from entering the dynamic rod guide. This is achieved by a special design which largely prevents the development of dents, protecting the guiding parts,and extending the working life of the seals.
    This wiper is specially developed for pneumatic equipment operated with dry air and oil-free air. This wiper must be pregreased prior to installation.Oversized diameters ensure a tight fit in the groove recess, thus preventing the penetration of foreign particles and dampness.
    The profile A2 pneumatic wiper ring provides a technically proper closure at the cylinder requiring no screwings brackets, close tolerances, and no metal inserts. There will be no corrosion as in the case with metalcased wipers. For the groove recess fine fitting is not required.

    • Good wear resistance.
    • Smooth running due to optimum lubricant-retaining sealing lip geometry.
    • High temperature resistance in case of suitable compound selection.
    • Excellent media resistance in case of suitable compound selection.
    • Product geometry prevents dirt deposits at the front face of the cylinder.
    • Installation in closed and undercut housings.

    Range of application
    Suitable for axially operated rods in pneumatic cylinders, plungers and rod guides.
    Operating temperature
    A2 NBR N3587-30 °C to +80 °C
    A2 PUR P5008-35 °C to +80 °C
    Sliding speed≤ 2 m/s
    MediaCompressed air, both lubricated and oil free (after greasing for fitting)

    Installation
    A2 wiper rings are supplied as continous rings. Any pressure on the back of the rings should be avoided.Intermediate sizes may easily be manufactured from the next largest ring with the same cross-section. For this, the ring should be cut at an angle of 90° to the circumfence length (+2 to 3 % in excess). Due to the excess length, the two ends will fit closely together so that no gap will occur. Gluing is not necessary. The wiper may easily be pressed into the groove recess with a resulting tight fit.

    d,D,H,L,a,n,
    A2 NBR N3587
    101652.611
    12207411
    14227411
    16247411
    18267411
    20287411
    22307411
    25337411
    28367411
    30387411
    36447411
    40487411
    45537411
    50587411
    56647411
    60687411
    70787411
    80887411
    90987411
    A2 PUR P5008
    20287411