McMaster-Carr logo
    Filter by
    System of Measurement
    Seal ID
    Attribute Image
    Loaded Type
    For Minimum Bore Width
    Attribute Image
    For Sealing
    For Shaft Motion
    Hardness Rating
    Minimum Temperature
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Maximum Temperature
    Reinforcement Type
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    11 Products

    Bore-Sealing Spring-Loaded Rotary Shaft Seals with Wiper Lip

    Image of Product. Side 1. Front orientation. Shaft Seals. Bore-Sealing Spring-Loaded Rotary Shaft Seals with Wiper Lip.
    Image of Product. Side 2. Back orientation. Shaft Seals. Bore-Sealing Spring-Loaded Rotary Shaft Seals with Wiper Lip.
    Image of Product. Profile. Front orientation. CrossSection view. Shaft Seals. Bore-Sealing Spring-Loaded Rotary Shaft Seals with Wiper Lip.
    Image of Attribute. Front orientation. Contains Annotated. Bore-Sealing Spring-Loaded Rotary Shaft Seals with Wiper Lip.

    Side 1

    Side 2

    Profile

    Ribbed Buna-N over steel creates a tight seal with the bore, even when mating with a rough surface or in a split housing. Also known as oil seals, these retain oil on rotating shafts in motors, pumps, bearings, and gearboxes. They have a secondary lip that blocks contaminants and a spring that secures the sealing-lip to prevent leaks. Press-fit seals into the bore around the shaft. Seals with a maximum pressure of 145 psi should be secured with a retaining ring.
    Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
    Seal,
    mm
    For
    Bore, mm
    For Shaft
    Dia., mm
    ID
    OD
    Wd.
    Dia.
    Min.Wd.
    Max. Rotation
    Speed, rpm
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Hardness
    Color
    Specs. Met
    Each
    Buna-N with Steel Core and Steel Spring
    5050.00065.0008.00065.0008.3005,3007-40 to 210Durometer 75A (Hard)GrayDIN 3760, ISO 61940000000000000
    5050.00068.0008.00068.0008.3005,2007-40 to 210Durometer 75A (Hard)GrayDIN 3760, ISO 6194000000000000
    5050.00072.0007.00072.0007.3003,700145-40 to 212Durometer 70A (Hard)Black—000000000000
    5050.00072.0008.00072.0008.3005,2007-40 to 210Durometer 75A (Hard)GrayDIN 3760, ISO 619400000000000
     

    Rotary Shaft Seals for Grease

    Image of Product. Side 1. Front orientation. Shaft Seals. Rotary Shaft Seals for Grease.
    Image of Product. Side 2. Back orientation. Shaft Seals. Rotary Shaft Seals for Grease.
    Image of Product. Profile. Front orientation. CrossSection view. Shaft Seals. Rotary Shaft Seals for Grease.
    Image of Attribute. Front orientation. Contains Annotated. Rotary Shaft Seals for Grease.

    Side 1

    Side 2

    Profile

    Also known as grease seals, these are designed to retain thick lubricant at low pressure in motors, pumps, bearings, and gearboxes. They have a light grip on the shaft that creates less friction than spring-loaded seals. Press-fit seals into the bore around the shaft.
    Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
    Seal,
    mm
    For
    Bore, mm
    For Shaft
    Dia., mm
    ID
    OD
    Wd.
    Dia.
    Min.Wd.
    Max. Rotation
    Speed, rpm
    Max.
    Pressure
    Temp. Range,
    ° F
    Hardness
    Color
    Each
    Buna-N with Steel Case
    5050.00058.0004.00058.0004.3003,800Not Rated-20 to 212Durometer 70A (Hard)Black0000000000000
     

    Spring-Loaded Rotary Shaft Seals with Wiper Lip

    Image of Product. Side 1. Front orientation. Shaft Seals. Spring-Loaded Rotary Shaft Seals with Wiper Lip.
    Image of Product. Side 2. Back orientation. Shaft Seals. Spring-Loaded Rotary Shaft Seals with Wiper Lip.
    Image of Product. Profile. Front orientation. CrossSection view. Shaft Seals. Spring-Loaded Rotary Shaft Seals with Wiper Lip.
    Image of Attribute. Front orientation. Contains Annotated. Spring-Loaded Rotary Shaft Seals with Wiper Lip.

    Side 1

    Side 2

    Profile

    Used to retain oil on rotating shafts in motors, pumps, bearings, and gearboxes, these seals have a secondary lip that blocks contaminants. Also known as oil seals, a spring secures the lip against the shaft, preventing messy leaks. Press-fit seals into the bore around the shaft. Seals with a maximum pressure of 50 psi should be secured with a retaining ring.
    Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
    Seal,
    mm
    For
    Bore, mm
    For Shaft
    Dia., mm
    ID
    OD
    Wd.
    Dia.
    Min.Wd.
    Max. Rotation
    Speed, rpm
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Hardness
    Color
    Specs. Met
    Each
    Buna-N with Steel Case and Steel Spring
    5050.00065.0008.00065.0008.3003,8007-20 to 212Durometer 70A (Hard)BlackDIN 3761, ISO 61940000000000000
     

    Spring-Loaded Rotary Shaft Seals

    Image of Product. Side 1. Front orientation. Shaft Seals. Spring-Loaded Rotary Shaft Seals.
    Image of Product. Side 2. Back orientation. Shaft Seals. Spring-Loaded Rotary Shaft Seals.
    Image of Product. Profile. Front orientation. CrossSection view. Shaft Seals. Spring-Loaded Rotary Shaft Seals.
    Image of Attribute. Front orientation. Contains Annotated. Spring-Loaded Rotary Shaft Seals.

    Side 1

    Side 2

    Profile

    Also known as oil seals, use these to retain oil on rotating shafts in motors, pumps, bearings, and gearboxes. A spring secures the lip against the shaft, preventing messy leaks. Press-fit seals into the bore around the shaft. Seals with a maximum pressure of 50 psi should be secured with a retaining ring.
    Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
    Acrylic-Coated Case—Seals with an acrylic-coated case have a coating that compensates for surface imperfections in the housing bore for a tight seal on the OD.
    Seal,
    mm
    For
    Bore, mm
    Case
    For Shaft
    Dia., mm
    ID
    OD
    Wd.
    Dia.
    Min.Wd.
    Max. Rotation
    Speed, rpm
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Hardness
    Color
    Finish
    Color
    Specs. Met
    Each
    Buna-N with Steel Case and Steel Spring
    5050.00068.0008.00068.0008.3003,00010-40 to 210Durometer 75A (Hard)BlackAcrylic CoatedGreenDIN 3760, ISO 6194000000000000
    5050.00072.0008.00072.0008.3003,00010-40 to 210Durometer 75A (Hard)BlackAcrylic CoatedGreenDIN 3760, ISO 6194000000000000
     

    Mechanical Pump Shaft Seals with Extended Spring

    Image of Product. Seal with Retainer and Straight Spring. Front orientation. Exploded view. Contains Annotated. Shaft Seals. Mechanical Pump Shaft Seals with Extended Spring, Straight Spring, Spring Retainer.

    Seal with Retainer

    and Straight Spring

    For use in waste water, boiler feed, and compressor pumps, these seals have an extra-long spring that accommodates variations in seal cavity length. They come furnished as two pieces—the seal and the seat. The seal is comprised of the case, spring, diaphragm, and washer, which come locked together as one piece. Seal Width represents the working height, which is the compressed length when installed. The seat is comprised of the seat and the gasket.
    Note: Maximum performance values cannot be achieved simultaneously; for example, speed is affected by pressure, temperature, and other operating conditions.
    Buna-N Diaphragm—Buna-N diaphragms resist grease and a wide range of oils.
    Buna-N Gasket—Buna-N gaskets resist grease and a wide range of oils.
    Carbon Washer—Carbon washers are for use with clean liquids.
    Cannot Be Sold Outside North America—Products cannot be sold outside North America due to restrictions.
    Seal,
    mm
    Seat,
    mm
    Material
    For Shaft
    Dia., mm
    Mfr./Brand Equiv.
    ID
    OD
    Wd.
    ID
    OD
    Wd.
    Washer
    Seat
    Spring
    Shape
    Includes
    Max. Pressure,
    psi
    Cannot Be Sold To
    Each
    304 Stainless Steel Case and 304 Stainless Steel Spring with Buna-N Diaphragm and Buna-N Gasket
    50John Crane Type 21
    Pac-Seal Type 21
    Pac-Seal Type 31
    Sealol Type 43 CE Short
    Sealol Type 43 CU Short    		50.00071.00038.00051.90069.75012.750CarbonCeramicStraightSpring Retainer250Outside North America000000000000000
     

    Cartridge Mechanical Shaft Seals

    Image of Product. Front orientation. Exploded view. Shaft Seals. Cartridge Mechanical Shaft Seals.
    Install these seals faster and with less technical expertise than other mechanical shaft seals that come in two pieces. They come with their seal and seat already assembled. All have a carbon washer that is self-lubricating. However, this means their washer is too soft to be used with abrasive liquids and liquids with harsh additives.
    Fluoroelastomer Diaphragm—Seals with a fluoroelastomer diaphragm can be used with a wider range of chemicals than EPDM diaphragms, including benzene, butyl alcohol, and fuels.
    EPDM Diaphragm—Seals with an EPDM diaphragm won’t break down from exposure to water and steam. However, they are for use with fewer chemicals.
    Seal,
    mm
    Fluoroelastomer
    Diaphragm
    EPDM Diaphragm
    For Shaft
    Dia., mm
    ID
    OD
    Wd.
    Max. Pressure,
    psi
    Each
    Each
    316 Stainless Steel Case and C276 Nickel Spring with PTFE Gasket
    505098.471.522000000000000000000000000000000000
     
    back to top