Skip to content

HERCULES MKR-U BUFFER SEAL

    MKR-U Buffer Seal

    Style MKR-U seals are molded from Zurcon® Z52 urethane. This seal is designed to allow for back-pumping capabilities  while improving wear resistance and decreasing friction. This seal can be used as a secondary seal or in tandem with a PTFE buffer seal.

    SEAL INFORMATION
    MATERIAL58D URETHANE
    BUFFER 70A NBR
    ENERGIZER
    TEMPERATURE
    RANGE
     -49° TO +212° F
    PRESSURE
    RANGE
    0 TO 3,600 (SINGLE)PSI
    0 TO 8,700
    (TANDEM) PSI
    SPEED1.6 FT/SEC
    Part NumberA
    Nom. ID
    B
    Nom. OD
    C
    Nom. Ht
    MKR-25X32.3X3U
    MKR-25X35.7X4U
    MKR-30X37.3X3U
    MKR-32X42.7X4U
    MKR-36X46.7X4U
    MKR-40X50.7X4U
    MKR-40X55.1X6U
    MKR-45X60.1X6U
    MKR-50X65.1X6U
    MKR-55X70.1X6U
    MKR-56X71.1X6U
    MKR-60X75.1X6U
    MKR-63X78.1X6U
    MKR-70X85.1X6U
    MKR-80X95.1X6U
    MKR-90X105.1X6U
    MKR-100X115.1X6U
    MKR-105X120.1X6U
    MKR-110X125.1X6U
    MKR-120X135.1X6U
    MKR-125X140.1X6U
    MKR-130X145.1X6U
    MKR-140X155.1X6U
    MKR-150X165.1X6U
    MKR-160X175.1X6U
    MKR-180X195.1X6U
    25
    25
    30
    32
    36
    40
    40
    45
    50
    55
    56
    60
    63
    70
    80
    90
    100
    105
    110
    120
    125
    130
    140
    150
    160
    180
    32.3
    35.7
    37.3
    42.7
    46.7
    50.7
    55.1
    60.1
    65.1
    70.1
    71.1
    75.1
    78.1
    85.1
    95.1
    105.1
    115.1
    120.1
    125.1
    135.1
    140.1
    145.1
    155.1
    165.1
    175.1
    195.1
    3
    4
    3
    4
    4
    4
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6
    6