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SPG

    SPG-piston seal

    SPG is a compact double acting piston seal for medium to heavy duty applications. The reinforced, heat stabilized, thermoplastic sealing face with step-cut joint allows the seal to pass over ports, making it an ideal choice for double acting telescopic cylinders.

    It comprises a bronze filled PTFE face ring, which is pre-loaded by a square section NBR ring. The cap ring is precision machined from a compression moulded billet. Compression moulding of the material offers consistently superior physical properties as compared to automatic moulded products. The machined face ring has chamfered corners for easy installation and a surface finish free from the “orange peel” effect associated with automatic moulded products. As only the PTFE face ring is in contact with the sliding surface, friction is very low and stick slip movement is eliminated. The housing width allows the designer to use a narrow width piston, but it is recommended that an adequate bearing be mounted on either side of the seal as shown.

    Materials
    Standard materials are bronze / PTFE with a NBR square section energizer.

    SPG piston seal

    MaterialPoer-transmission fluidTemperatureSpeedPressureMax. Gap F
    PTFE+bronzeMineral Oil (NBR)-30 – +110≦ 15m/s160 barF ≦ 0.6mm
    Mineral Oil (FKM)-30 – +200250 barF ≦ 0.4mm
    400 barF ≦ 0.2mm
    Chamfers & Rad(mm)ToleranceSurface Finishing
    μm Raμm Rt
    S ≦3.755.57.510.512.515ØD1H90.1-0.4≦ 4
    C ≧2357.588.5Ød1h9≦ 1.6≦ 10
    r1 ≧0.40.81.21.61.62.0L+0.2 – 0≦ 3.2≦ 16

    SPG PISTON SEAL LIST

    ITEM NO.SIZE
    SPGdDhHC
    3020.5304.34.52
    31.52231.54.34.53.5
    3222.5324.34.53.5
    3525.5354.34.53.5
    35.52635.54.34.53.5
    4030404.34.53.5
    4535454.34.53.5
    5040504.34.54
    5545554.34.54
    5646564.34.54
    6050604.34.54
    6348637.37.54
    6550657.37.54
    6954697.37.54
    7055707.37.55
    7156717.37.55
    7560757.37.55
    8065807.37.55
    8570857.37.55
    9075907.37.55
    9580957.37.55
    100851007.37.55
    105901057.37.55
    108921087.37.55
    110941107.37.55
    112961127.37.56.5
    1201041207.37.56.5
    1251091257.37.56.5
    1301141307.37.56.5
    1351191357.37.56.5
    1401241407.37.56.5
    1451291457.37.56.5
    1501341507.37.56.5
    1551391557.37.56.5
    1601441607.37.56.5
    17014817010.8116.5
    18015818010.8116.5
    19016819010.8116.5
    20017820010.8116.5
    20418220410.8116.5
    21018821010.8116.5
    21519321510.8116.5
    22019822010.8116.5
    22420222410.8116.5
    22520322510.8116.5
    ITEM NO.SIZE
    SPGdDhHC
    23020823010.8116.5
    24021824010.8116.5
    25022825010.8116.5
    26023626011.7127.5
    27024627011.7127.5
    28025628011.7127.5
    29026629011.7127.5
    30027630011.7127.5
    31028631011.7127.5
    32029632011.7127.5
    3303083309.751010
    36033636011.71210
    40037640011.71210
    48545548514.81510
    50047050014.81510
    55051555017.217.510
    60057060014.81510
    65062065014.81515
    72069072014.81515
    80078580012.71315
    90087090024.52515
    930890930192015
    93592093512.71315
    95092595017.71815
    1000960100019.72020
    10601020106019.72020
    11201080112019.72020
    11501110115019.72020
    11801130118019.72020
    121011701210192020
    12501210125019.72020
    12601220126019.72020
    14001350140019.72020
    15001460150019.72020
    165016001650242520

    SPG PART NUMBERS:

    5J7004
    5J7004A
    1U3998
    1U3998A
    8J6213
    8J6213A
    5J7010
    5J7010A
    6J1972
    6J1972A
    2443839
    6J0793
    6J0793A
    5J7013A
    5J8011
    5J8011A
    5J5402
    5J5402A
    5J7854
    5J7854A
    5J4986
    5J4986A
    5J4987
    5J4987A
    5J5020
    5J5020A
    5J7234A
    5J4988A
    9J4981A
    5J4989
    5J4989A
    5J4990
    5J4990A
    5J4991
    5J4991A
    5J4997
    5J4997A
    5J4993
    5J4993A
    9J7117A
    5J7016
    5J7016A
    5J5559A
    6J9385A
    5J7019
    5J7019A
    1214179
    1674004
    1449485
    1980659
    1403750
    1617144
    1617145
    1754721
    1200890
    2107029
    1463923
    1931394
    1463968
    1617149
    1934313
    2107026
    2332584
    1445287
    1931368
    0963893
    0967803
    0961564
    0861345
    2344583
    0961570
    8C9193