McMaster-Carr logo
    Filter by
    For Cylinder Type
    Maximum Pressure
    For Sealing
    Cylinder Seal Type
    Hardness Rating
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Maximum Speed
    Maximum Temperature
    Minimum Temperature
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    28 Products

    Piston Seals for O-Ring Grooves

    Image of Product. Front orientation. Piston Seals. Piston Seals for O-Ring Grooves.
    Image of Product. Profile. Front orientation. CrossSection view. Piston Seals. Piston Seals for O-Ring Grooves.
    Image of Attribute. Front orientation. Contains Annotated. Piston Seals for O-Ring Grooves.
    Image of Attribute. Front orientation. Contains Annotated. Piston Seals for O-Ring Grooves.

    Profile

    Avoid common O-ring failure in dynamic applications—the square base of these seals prevents twisting, while backup rings protect against extrusion.
    Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
    For
    Groove
    For Bore
    Dia.
    Dia.
    Wd.
    O-Ring Dash
    No. Equiv.
    Max. Speed,
    ft/sec
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Hardness
    Color
    Each
    Buna-N with Nylon Backup Ring
    5/8"0.381"0.187"204
    1.65,000-40 to 225Durometer 70A (Hard)Black000000000000
    3/4"0.506"0.187"206
    1.65,000-40 to 225Durometer 70A (Hard)Black00000000000
    7/8"0.631"0.187"208
    1.65,000-40 to 225Durometer 70A (Hard)Black00000000000
    1"0.757"0.187"210
    1.65,000-40 to 225Durometer 70A (Hard)Black00000000000
    1 1/8"0.882"0.187"212
    1.65,000-40 to 225Durometer 70A (Hard)Black00000000000
    1 1/4"1.007"0.187"214
    1.65,000-40 to 225Durometer 70A (Hard)Black00000000000
    1 1/2"1.257"0.187"218
    1.65,000-40 to 225Durometer 70A (Hard)Black00000000000
    1 3/4"1.507"0.187"222
    1.65,000-40 to 225Durometer 70A (Hard)Black00000000000
    2"1.628"0.282"326
    1.65,000-40 to 225Durometer 70A (Hard)Black000000000000
    2 1/4"1.878"0.282"328
    1.65,000-40 to 225Durometer 70A (Hard)Black000000000000
    2 1/2"2.128"0.282"330
    1.65,000-40 to 225Durometer 70A (Hard)Black000000000000
    3"2.628"0.282"334
    1.65,000-40 to 225Durometer 70A (Hard)Black000000000000
    3 1/2"3.129"0.282"338
    1.65,000-40 to 225Durometer 70A (Hard)Black000000000000
    4"3.629"0.282"342
    1.65,000-40 to 225Durometer 70A (Hard)Black000000000000
     

    High-Pressure Piston Seals

    Image of Product. Front orientation. Piston Seals. High-Pressure Piston Seals.
    Image of Product. Profile. Front orientation. CrossSection view. Piston Seals. High-Pressure Piston Seals.
    Image of Attribute. Front orientation. Contains Annotated. High-Pressure Piston Seals.
    Image of Attribute. Front orientation. Contains Annotated. High-Pressure Piston Seals.

    Profile

    Rated for pressure up to 10,000 psi, these seals withstand the highest pressure of our piston seals. They have two high-strength backup rings that protect against extrusion.
    Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
    For
    Groove
    O-Ring
    For Bore
    Dia.
    Dia.
    Wd.
    O-Ring Dash
    No. Equiv.
    Max. Speed,
    ft/sec
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Hardness
    Color
    Hardness
    Color
    Each
    Glass-Filled PTFE with Nylon Backup Ring and Buna-N O-Ring
    2"1.625"0.424"Not Rated510,000-30 to 230Durometer 60D (Extra Hard)GrayDurometer 70A (Hard)Black0000000000000
    2 1/2"2.125"0.424"Not Rated510,000-30 to 230Durometer 60D (Extra Hard)GrayDurometer 70A (Hard)Black000000000000
    3"2.520"0.579"Not Rated510,000-30 to 230Durometer 60D (Extra Hard)GrayDurometer 70A (Hard)Black000000000000
    3 1/2"3.020"0.579"Not Rated510,000-30 to 230Durometer 60D (Extra Hard)GrayDurometer 70A (Hard)Black000000000000
    4"3.520"0.579"Not Rated510,000-30 to 230Durometer 60D (Extra Hard)GrayDurometer 70A (Hard)Black000000000000
     

    Rod Seals for O-Ring Grooves

    Image of Product. Profile. Front orientation. CrossSection view. Rod Seals. Rod Seals for O-Ring Grooves.
    Image of Attribute. Front orientation. Contains Annotated. Rod Seals for O-Ring Grooves.

    Profile

    Avoid common O-ring failure in dynamic applications—the square base of these seals prevents twisting, while backup rings protect against extrusion.
    Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
    For
    Groove
    For Rod
    Dia.
    Dia.
    Wd.
    O-Ring Dash
    No. Equiv.
    Max. Speed,
    ft/sec
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Hardness
    Color
    Backup Ring
    Color
    Each
    Buna-N with Nylon Backup Ring
    1/2"0.742"0.187"206
    1.65,000-40 to 225Durometer 75A (Hard)BlackGray000000000000
    5/8"0.867"0.187"208
    1.65,000-40 to 225Durometer 70A (Hard)BlackGray00000000000
    3/4"0.991"0.187"210
    1.65,000-40 to 225Durometer 70A (Hard)BlackGray00000000000
    1 1/8"1.366"0.187"216
    1.65,000-40 to 225Durometer 70A (Hard)BlackGray00000000000
    1 1/2"1.870"0.282"325
    1.65,000-40 to 225Durometer 70A (Hard)BlackGray00000000000
    2"2.370"0.282"329
    1.65,000-40 to 225Durometer 70A (Hard)BlackGray000000000000
    2 1/4"2.612"0.282"331
    1.65,000-40 to 225Durometer 70A (Hard)BlackGray000000000000
    2 1/2"2.870"0.282"333
    1.65,000-40 to 225Durometer 70A (Hard)BlackGray000000000000
    3"3.369"0.282"337
    1.65,000-40 to 225Durometer 70A (Hard)BlackGray000000000000
     
    back to top