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Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.

Industrial-Grade GSF Glyd Ring (FKM Energized): Filled PTFE + O-Ring Piston Seal 1
Industrial-Grade GSF Glyd Ring (FKM Energized): Filled PTFE + O-Ring Piston Seal 2
Industrial-Grade GSF Glyd Ring (FKM Energized): Filled PTFE + O-Ring Piston Seal 3
Industrial-Grade GSF Glyd Ring (FKM Energized): Filled PTFE + O-Ring Piston Seal 4
Industrial-Grade GSF Glyd Ring (FKM Energized): Filled PTFE + O-Ring Piston Seal 1
Industrial-Grade GSF Glyd Ring (FKM Energized): Filled PTFE + O-Ring Piston Seal 2
Industrial-Grade GSF Glyd Ring (FKM Energized): Filled PTFE + O-Ring Piston Seal 3
Industrial-Grade GSF Glyd Ring (FKM Energized): Filled PTFE + O-Ring Piston Seal 4

Industrial-Grade GSF Glyd Ring (FKM Energized): Filled PTFE + O-Ring Piston Seal

Engineered for double‑acting hydraulic sealing: Low friction · High temperature resistance
Our industrial‑grade GSF Glyd Ring is a high‑performance double‑acting piston seal energized by an FKM O‑Ring. Designed for heavy‑duty hydraulic systems, it combines filled PTFE’s low friction and wear resistance with FKM’s excellent heat and chemical tolerance. This construction ensures stable sealing, zero leakage, and long service life even in extreme temperature and corrosive environments.
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    1. Product Advantages

    This product features excellent double‑acting bidirectional sealing for piston cylinders, ultra‑low friction and no stick‑slip to reduce energy consumption, outstanding high temperature resistance up to 200°C with an FKM energizer, strong anti‑extrusion and high wear resistance for long service life, good chemical resistance to hydraulic oils, fuels and corrosive media, and is easy to install in standard ISO 7425 grooves.

    2. Installation Recommendation

    Industrial-Grade GSF Glyd Ring (FKM Energized): Filled PTFE + O-Ring Piston Seal 5

    3.Working Principle

    The GSF Glyd Ring uses an O‑Ring‑energized composite structure. The FKM O‑Ring provides stable radial preload to ensure low‑pressure sealing. Under working pressure, the O‑Ring is further energized and pushes the filled PTFE ring tightly against the cylinder bore. The low‑friction PTFE layer forms a stable lubricating film, avoiding metal contact and reducing wear. The optimized profile ensures uniform pressure distribution and strong anti‑extrusion performance, enabling reliable double‑acting sealing under dynamic load.

    4. Product Details

    • Type: Double‑acting piston Glyd Ring (FKM energized)
    • Model: GLYD RING BROWN 180×159×8.1
    • Seal ring: Filled PTFE (brown)
    • Energizer: FKM (fluorocarbon rubber)
    • Pressure: 0–60 MPa
    • Speed: ≤15 m/s
    • Temperature: -20°C to +200°C
    • Standard: ISO 7425

    5. Product  Dimensions

    Bore Dia.

    Groove Dia.

    Groove Width

    Order No.

    O-Ring Dimensions

    DN H9

    d1 h9

    L1+0.2

     

     

    8

    10

    12

    3.1

    5.1

    7.1

    2.2

    2.2

    2.2

    GSF8*3.1*2.2

    GSF10*5.1*2.2

    GSF12*7.1*2.2

    2.90*1.78

    4.80*1.8

    6.70*1.8

    14

    15

    15

    9.1

    10.1

    7.5

    2.2

    2.2

    3.2

    GSF14*9.1*2.2

    GSF15*10.1*2.2

    GSF15*7.5*3.2

    8.75*1.8

    7.59*2.62

    8.75*1.8

    16

    16

    18

    11.1

    8.5

    13.1

    2.2

    3.2

    2.2

    GSF16*11.1*2.2

    GSF16*8.5*3.2

    GSF18*13.1*2.2

    10.82*1.78

    7.59*2.62

    12.42*1.78

    18

    20

    20

    10.5

    15.1

    12.5

    3.2

    2.2

    3.2

    GSF18*10.5*3.2

    GSF20*15.1*2.2

    GSF20*12.5*3.2

    9.19*2.62

    14.00*1.78

    12.37*2.62

    24

    24

    25

    19.1

    16.5

    17.5

    2.2

    3.2

    3.2

    GSF24*19.1*2.2

    GSF24*16.5*3.2

    GSF25*17.5*3.2

    18.77*1.78

    15.54*2.62

    17.12*2.62

    25

    28

    28

    14

    20.5

    17

    4.2

    3.2

    4.2

    GSF25*14*4.2

    GSF28*20.5*3.2

    GSF28*17*4.2

    13.87*3.53

    20.29*2.62

    15.47*3.53

    30

    30

    32

    22.5

    19

    24.5

    3.2

    4.2

    3.2

    GSF30*22.5*3.2

    GSF30*19*4.2

    GSF32*24.5*3.2

    21.89*2.62

    26.70*1.78

    23.47*2.62

    32

    35

    35

    21

    27.5

    24

    4.2

    3.2

    4.2

    GSF32*21*4.2

    GSF35*27.5*3.2

    GSF35*24*4.2

    20.22*3.53

    26.64*2.62

    23.40*3.53

    36

    36

    38

    28.5

    25

    30.5

    3.2

    4.2

    3.2

    GSF36*28.5*3.2

    GSF36*25*4.2

    GSF38*30.5*3.2

    28.24*2.62

    23.39*3.53

    29.82*2.62

    38

    40

    40

    27

    32.5

    29

    4.2

    3.2

    4.2

    GSF38*27*4.2

    GSF40*32.5*3.2

    GSF40*29*4.2

    25.86*3.53

    31.42*2.62

    28.17*3.53

    45

    45

    48

    37.5

    34

    40.5

    3.2

    4.2

    3.2

    GSF45*37.5*3.2

    GSF45*34*4.2

    GSF48*40.5*3.2

    36.5*2.62

    32.92*3.53

    36.09*3.53

    48

    50

    50

    37

    39

    34.5

    4.2

    4.2

    6.3

    GSF48*37*4.2

    GSF50*39*4.2

    GSF50*34.5*6.3

    36.09*3.53

    37.70*3.53

    32.69*5.33

    52

    52

    55

    41

    36.5

    44

    4.2

    6.3

    4.2

    GSF52*41*4.2

    GSF52*36.5*6.3

    GSF55*44*4.2

    40.87*3.53

    35*5.33

    44.04*3.53

    55

    56

    56

    39.5

    45

    40.5

    6.3

    4.2

    6.3

    GSF55*39.5*6.3

    GSF56*45*4.2

    GSF56*40.5*6.3

    38*5.33

    44.04*3.53

    39*5.33

    60

    60

    63

    49

    44.5

    52

    4.2

    6.3

    4.2

    GSF60*49*4.2

    GSF60*44.5*6.3

    GSF63*52*4.2

    47.22*3.53

    42.5*5.33

    50.39*3.53

    63

    64

    64

    47.5

    53

    48.5

    6.3

    4.2

    6.3

    GSF63*47.5*6.3

    GSF64*53*4.2

    GSF64*48.5*6.3

    46*5.33

    51.5*3.53

    46.99*5.33

    65

    65

    70

    54

    49.5

    59

    4.2

    6.3

    4.2

    GSF65*54*4.2

    GSF65*49.5*6.3

    GSF70*59*4.2

    53.57*3.53

    48*5.33

    56.74*3.53

    70

    75

    75

    54.5

    64

    59.5

    6.3

    4.2

    6.3

    GSF70*54.5*6.3

    GSF75*64*4.2

    GSF75*59.5*6.3

    53.34*5.33

    63.09*3.53

    56.52*5.33

    80

    80

    85

    69

    64.5

    74

    4.2

    6.3

    4.2

    GSF80*69*4.2

    GSF80*64.5*6.3

    GSF85*74*4.2

    66.27*3.53

    62.87*5.33

    72.62*3.53

    85

    90

    90

    69.5

    79

    74.5

    6.3

    4.2

    6.3

    GSF85*69.5*6.3

    GSF90*79*4.2

    GSF90*74.5*6.3

    69.22*5.33

    78.97*3.53

    72.39*5.33

    95

    95

    100

    84

    79.5

    89

    4.2

    6.3

    4.2

    GSF95*84*4.2

    GSF95*79.5*6.3

    GSF100*89*4.2

    82.14*3.53

    78.74*5.33

    88.49*3.53

    100

    105

    105

    84.5

    94

    89.5

    6.3

    4.2

    6.3

    GSF100*84.5*6.3

    GSF105*94*4.2

    GSF105*89.5*6.3

    81.92*5.33

    91.67*3.53

    88.27*5.33

    110

    110

    115

    99

    94.5

    99.5

    4.2

    6.3

    6.3

    GSF110*99*4.2

    GSF110*94.5*6.3

    GSF115*99.5*6.3

    98.02*3.53

    91.44*5.33

    97.79*5.33

    6.Company Selling Points (Forever Seals)

    Forever Seals has over 17 years of experience.We implement strict quality control with 100% inspection on dimensions, materials, and performance to ensure stable and reliable product quality. Our products adopt premium materials with optimized filled PTFE and FKM compounds to deliver outstanding durability and service life. We provide fast delivery with sufficient stock for standard sizes and short lead times for custom orders. We also offer full technical support including design consultation, installation guidance, and professional after-sales service. With global customer service capabilities, we steadily serve customers in industrial, mobile machinery, and automotive markets around the world.

    Get In Touch With Us

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