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KASTAS K21 PISTON SEAL / ROD SEAL

    KASTAS PISTON – ROD SEALS K21

    K21 is a single acting piston – rod seal and designed to have symmetrical lips in order to be used both for rod and piston applications.

    PRODUCT ADVANTAGES
    · Superior static and dynamic sealing effect
    · Wide range of dimensions
    · Easy assembly into closed grooves
    · Simple groove design
    · Economical sealing solution

    APPLICATION
    Construction machinery, fork-lift trucks, injection moulding machines, agricultural machinery, loading platforms and standard cylinders.

    MATERIALCODE
    NBR90 SHORE ANB9001
    PU92 SHORE APU9201
    OPERATING CONDITIONS
    NBR
    MEDIAMineral oils
    (DIN 51524)
    HFA and
    HFB
    HFC
    TEMPERATURE -30°C
    +105°C
     +5°C
    +60°C
     -30°C
    +60°C
    PRESSURE≤150 Bar≤150 Bar≤150 Bar
    SPEED≤0.5 m/sec≤0.5 m/sec≤0.5 m/sec
    SURFACE ROUGHNESSRaRmax
    Sliding Surface ØD-Ød≤0.4 μm≤3.2 μm
    Groove Base ØDb-Ødp≤1.6 μm≤10 μm
    Groove Flanks B≤3.2 μm≤16 μm

    INSTALLATION
    Easily assembled into closed grooves according to the minimum diameter values that are given in the below table. Open grooves or special assembly tools should be used for the values that are outside this table. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the seal must be oiled with system oil.

    MINUMUM DIAMETER VALUES FOR CLOSED TYPE OF GROOVES
    (D-d)/2
    (mm)
    4567.71012.515
    dmin
    (mm)
    2530405080100105

    NOTES
    For special applications that require high temperatures, K21 can be produced in FKM. The permissible sealing gap values of K21 piston – rod seal is given in the below table.

    PERMISSIBLE SEALING GAP
    NBRSmax (mm)
    t=(D-d)/250 Bar100 Bar150 Bar
    t≤50.400.200.10
    t>50.450.250.15
    PUSmax (mm)
    t=(D-d)/2150 Bar250 Bar400 Bar
    t≤50.300.200.15
    t>50.350.250.20

    KASTAŞ NOd (f7)/dp (h11)Db (H11)/D (H11)bB (-0/+0.2)n
    K21-003/2383.542.5
    K21-003/4310673.5
    K21-003/5384.552.5
    K21-004410563
    K21-004/14125.56.54
    K21-004/241244.54
    K21-004/341044.53
    K21-004/447.533.52
    K21-004/54104.553
    K21-004/6410673
    K21-005511783
    K21-005/2511563
    K21-005/351044.52.5
    K21-005/4510562.5
    K21-005/5592.42.92
    K21-005/6512563.5
    K21-005/75144.554
    K21-005/851244.53.5
    K21-0066922.52
    K21-006/1612673
    K21-006/10614674
    K21-006/11620895.5
    K21-006/1261444.54
    K21-006/13616564.5
    K21-006/14612563
    K21-006/2612783
    K21-006/361033.52
    K21-006/4615564
    K21-006/5616674.5
    K21-006/661244.53
    K21-006/76.3512.76.357.353
    K21-006/8618895
    K21-006/96135.56.53.5
    K21-007715564
    K21-007/1714783.5
    K21-007/2712.53.543
    K21-007/3715784
    K21-007/47133.543
    K21-007/571244.52.5
    K21-007/67113.542
    K21-008818894.5
    K21-008/1814673
    K21-008/10815673.5
    K21-008/11820895
    K21-008/12817674
    K21-008/138155.26.23.5
    K21-008/148152.533.5
    K21-008/15815563.5
    K21-008/1681244.52
    K21-008/2816674
    K21-008/3816894
    K21-008/581444.53
    K21-008/7815893.5
    K21-008/8812562
    K21-008/9813782.5
    K21-009917674
    K21-009/1919674.5
    K21-009/291644.53.5
    K21-009/3916783.5
    K21-009/49175.56.54
    K21-0101020894.5
    K21-010/10101544.52.5
    K21-010/111016673
    K21-010/121016563
    K21-010/131020784.5
    K21-010/1410229105
    K21-010/1610143.542
    K21-010/1710206.57.54.5
    K21-010/181026896
    K21-010/191022675
    K21-010/21018894
    K21-010/20101844.54
    K21-010/3102810116
    K21-010/41018674
    K21-010/51022895
    K21-010/6101644.53
    K21-010/71025895.5
    K21-010/8102510115.5
    K21-010/910269.510.56
    K21-0121222894.5
    K21-012/11220894
    K21-012/10121833.53
    K21-012/111220564
    K21-012/121225895
    K21-012/141224675
    K21-012/15122810116
    K21-012/16121633.52
    K21-012/171222784.5
    K21-012/1812.725.46.357.355
    K21-012/21222674.5
    K21-012/20121733.52.5
    K21-012/2112206.87.84
    K21-012/2312261085
    K21-012/24123210116
    K21-012/251219.5784
    K21-012/31224785
    K21-012/4122410115
    K21-012/51218673
    K21-012/61222564.5
    K21-012/7121844.53
    K21-012/81218563
    K21-012/912205.56.54
    K21-013/11325895
    K21-0141424894.5
    K21-014/11422564
    K21-014/101432896
    K21-014/111422674
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    K21-014/2142212134
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    K21-014/51422894
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    K21-014/9142244.54
    K21-0151525894.5
    K21-015/1015213.543
    K21-015/111522563.5
    K21-015/12152810115
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    K21-015/1415.8725.44.765.264.5
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    K21-0161626894.5
    K21-016/11622563
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    K21-016/4163210116
    K21-016/5162444.54
    K21-016/6162233.53
    K21-016/71629675
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    K21-016/9162244.53
    K21-017/1173210115.5
    K21-017/2172544.54
    K21-0181828894.5
    K21-018/11830675
    K21-018/101828674.5
    K21-018/111824893
    K21-018/12182644.54
    K21-018/218307.58.55
    K21-018/318308.59.55
    K21-018/4183010115
    K21-018/518255.56.53.5
    K21-018/61832785.5
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    K21-018/8182444.53
    K21-018/91826564
    K21-019/31925673
    K21-019/419.523.914.815.812
    K21-019/6192744.54
    K21-0202030894.5
    K21-020/12028564
    K21-020/1020253.542.5
    K21-020/11203044.54.5
    K21-020/122026673
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    K21-020/15203610116
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    K21-020/1720327.58.55
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    K21-020/19203512135.5
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    K21-020/2420252.532.5
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    K21-020/3203010114.5
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    K21-025/2025407.58.55.5
    K21-025/212547787
    K21-025/222532563.5
    K21-025/23253510114.5
    K21-025/2625366.97.95
    K21-025/2725389.510.55
    K21-025/32535564.5
    K21-025/42535784.5
    K21-025/52535894.5
    K21-025/62537785
    K21-025/725389105
    K21-025/8254510116
    K21-025/92532783.5
    K21-026/12642896
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    K21-027273544.54
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    K21-028284310115.5
    K21-028/1284010115
    K21-028/102838564.5
    K21-028/112832.833.52.5
    K21-028/1228488.59.56
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    K21-030304510115.5
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    K21-030/1730.1638.13.974.974
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