McMaster-Carr logo
    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)
    87 Products

    Oil-Resistant Compressible Buna-N Pipe Gaskets with Bolt Holes

    Image of ProductInUse. Front orientation. Exploded view. Pipe Gaskets. Oil-Resistant Compressible Buna-N Pipe Gaskets with Bolt Holes.
    Made of Buna-N, these gaskets compress to ensure a tight seal. They resist oil, water, and salts. Commonly called full-face gaskets, they cover the entire face of flat-surface pipe flanges and align with the bolt holes.
    Plain-Back Gaskets for ANSI Flanges
    Gaskets for ANSI flanges are sized so all gasket specifications meet ANSI standards.
    For ANSI Class 150—Gaskets for ANSI Class 150 flanges are compatible with low-pressure pipe flanges.
    For ANSI Class 300—Gaskets for ANSI Class 300 flanges are compatible with medium-pressure pipe flanges.
    For Pipe
    Size
    ID
    OD
    No. of Bolt
    Holes
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Hardness
    Color
    Specs.
    Met
    1/32"
    Thick
    1/16"
    Thick
    1/8"
    Thick
    For ANSI Class 150
    1/2
    		27/32"3 1/2"4800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T231000000000000000
    3/4
    		1 1/16"3 7/8"4800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T232—00000000
    1
    		1 5/16"4 1/4"4800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T233000000000000
    1 1/4
    		1 21/32"4 5/8"4800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T234—00000000
    1 1/2
    		1 29/32"5"4800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T235000000000000
    2
    		2 3/8"6"4800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T236000000000000
    2 1/2
    		2 7/8"7"4800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T237—00000000
    3
    		3 1/2"7 1/2"4800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T238000000000000
    3 1/2
    		4"8 1/2"8800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T239—00000000
    4
    		4 1/2"9"8800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T241000000000000
    5
    		5 9/16"10"8800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T242—00000000
    6
    		6 5/8"11"8800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T2430000000000000
    8
    		8 5/8"13 1/2"8800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T244—000000000
    10
    		10 3/4"16"12800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T4—0000000000
    12
    		12 3/4"19"12800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T5—0000000000
    1414"21"12800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T288—0000000000
    1616"23 1/2"16800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T273—0000000000
    1818"25"16800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T276—0000000000
    2020"27 1/2"20800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T279—0000000000
    2424"32"20800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T282—0000000000
     
    For ANSI Class 300
    3/4
    		1 1/16"4 5/8"4800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T286——0000
    1
    		1 5/16"4 7/8"4800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T251——0000
    1 1/4
    		1 21/32"5 1/4"4800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T252——0000
    1 1/2
    		1 29/32"6 1/8"4800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T253—00000000
    2
    		2 3/8"6 1/2"8800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T254—00000000
    2 1/2
    		2 7/8"7 1/2"8800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T255—00000000
    3
    		3 1/2"8 1/4"8800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T256—00000000
    3 1/2
    		4"9"8800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T257——00000
    4
    		4 1/2"10"8800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T259—00000000
    5
    		5 9/16"11"8800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T287—00000—
    6
    		6 5/8"12 1/2"12800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T262—0000000000
    8
    		8 5/8"15"12800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T264—0000000000
    10
    		10 3/4"17 1/2"16800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T266—0000000000
    12
    		12 3/4"20 1/2"16800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T268——00000
     
    Adhesive-Back Gaskets for ANSI Flanges
    Adhesive-back gaskets stay in place to make installation easier.
    Gaskets for ANSI flanges are sized so all gasket specifications meet ANSI standards.
    For ANSI Class 150—Gaskets for ANSI Class 150 flanges are compatible with low-pressure pipe flanges.
    Adhesive
    1/16" Thick
    For Pipe
    Size
    ID
    OD
    No. of Bolt
    Holes
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Hardness
    Color
    Material
    Max. Temp.,
    ° F
    Specs.
    Met
    Each
    For ANSI Class 150
    1/2
    		27/32"3 1/2"4800-20 to 170Durometer 60A (Medium Hard)BlackAcrylic Plastic
    		120ASTM D20008516T44900000
    1
    		1 5/16"4 1/4"4800-20 to 170Durometer 60A (Medium Hard)BlackAcrylic Plastic
    		120ASTM D20008516T4520000
    1 1/4
    		1 21/32"4 5/8"4800-20 to 170Durometer 60A (Medium Hard)BlackAcrylic Plastic
    		120ASTM D20008516T4530000
    1 1/2
    		1 29/32"5"4800-20 to 170Durometer 60A (Medium Hard)BlackAcrylic Plastic
    		120ASTM D20008516T4540000
    2
    		2 3/8"6"4800-20 to 170Durometer 60A (Medium Hard)BlackAcrylic Plastic
    		120ASTM D20008516T4550000
    2 1/2
    		2 7/8"7"4800-20 to 170Durometer 60A (Medium Hard)BlackAcrylic Plastic
    		120ASTM D20008516T4560000
    3
    		3 1/2"7 1/2"4800-20 to 170Durometer 60A (Medium Hard)BlackAcrylic Plastic
    		120ASTM D20008516T4570000
    4
    		4 1/2"9"8800-20 to 170Durometer 60A (Medium Hard)BlackAcrylic Plastic
    		120ASTM D20008516T4590000
    6
    		6 5/8"11"8800-20 to 170Durometer 60A (Medium Hard)BlackAcrylic Plastic
    		120ASTM D20008516T46200000
    8
    		8 5/8"13 1/2"8800-20 to 170Durometer 60A (Medium Hard)BlackAcrylic Plastic
    		120ASTM D20008516T46300000
     
    Plain-Back Gaskets for DN Flanges
    Gaskets for DN flange sizes are sized to fit pressure class PN16 flanges.
    1/8" Thick
    For DN
    Size
    ID,
    mm
    OD,
    mm
    No. of Bolt
    Holes
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Hardness
    Color
    Specs.
    Met
    Each
    25351154800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T491000000
    40491504800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T49200000
    50611654800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T49300000
    80902008800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T49400000
    1001152208800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T49500000
     

    Oil-Resistant Compressible Buna-N Pipe Gaskets

    Image of ProductInUse. Front orientation. Pipe Gaskets. Oil-Resistant Compressible Buna-N Pipe Gaskets.
    These compressible Buna-N gaskets ensure a tight seal. They resist oil, water, and salts. Also known as ring gaskets, use them with raised-surface pipe flanges; they fit the surface inside the bolt holes and do not interfere with the bolt connection. All gasket specifications are sized to meet ANSI standards.
    Plain-Back Gaskets for ANSI Flanges
    For ANSI Class 150—Gaskets for ANSI Class 150 flanges are compatible with low-pressure pipe flanges.
    For ANSI Class 300—Gaskets for ANSI Class 300 flanges are compatible with medium-pressure pipe flanges.
    For Pipe
    Size
    ID
    OD
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Hardness
    Color
    Specs.
    Met
    1/16"
    Thick
    1/8"
    Thick
    For ANSI Class 150
    1/2
    		27/32"1 7/8"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T1310000000000
    3/4
    		1 1/16"2 1/4"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T13200000000
    1
    		1 5/16"2 5/8"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T13300000000
    1 1/4
    		1 21/32"3"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T13400000000
    1 1/2
    		1 29/32"3 3/8"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T13500000000
    2
    		2 3/8"4 1/8"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T13600000000
    2 1/2
    		2 7/8"4 7/8"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T13700000000
    3
    		3 1/2"5 3/8"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T13800000000
    3 1/2
    		4"6 3/8"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T13900000000
    4
    		4 1/2"6 7/8"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T14100000000
    5
    		5 9/16"7 3/4"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T14200000000
    6
    		6 5/8"8 3/4"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T14300000000
    8
    		8 5/8"11"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T14400000000
    10
    		10 3/4"13 3/8"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T9300000000
    12
    		12 3/4"16 1/8"700-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T94000000000
     
    For ANSI Class 300
    1
    		1 5/16"2 7/8"800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T80100000000
    1 1/2
    		1 29/32"3 3/4"800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T85—0000
    1 1/2
    		1 29/32"3 3/4"800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T97—0000
    2
    		2 3/8"4 3/8"800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T80200000000
    2 1/2
    		2 7/8"5 1/8"800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T80300000000
    3
    		3 1/2"5 7/8"800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T80400000000
    4
    		4 1/2"7 1/8"800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T80500000000
    6
    		6 5/8"9 7/8"800-20 to 170Durometer 60A (Medium Hard)BlackASTM D20008516T80600000000
     

    Oil-Resistant Compressible Buna-N Pipe Gaskets with Bolt Holes for Dissimilar Metals

    The included plastic sleeves and washers provide a layer of protection against dielectric corrosion, which occurs when different metals are joined. Commonly called full-face gaskets, these cover the entire face of flat-surface pipe flanges and align with the bolt holes. They’re made of compressible Buna-N to ensure a tight seal. They resist oil, water, and salts. Gaskets are compatible with low-pressure pipe flanges; all gasket specifications are sized to meet ANSI standards. Each gasket comes with one full-length sleeve for each bolt hole, plus two phenolic and two zinc-plated metal washers for each bolt hole. Bolts are not included.
    Plain-Back Gaskets for ANSI Flanges
    Image of Product. Front orientation. Pipe Gaskets. Oil-Resistant Compressible Buna-N Pipe Gaskets with Bolt Holes for Dissimilar Metals.
    1/8" Thick
    For Pipe
    Size
    ID
    OD
    No. of Bolt
    Holes
    Max. Pressure,
    psi
    Max. Temp.,
    ° F
    Hardness
    Color
    Includes
    Each
    For ANSI Class 150
    1/2
    		27/32"3 1/2"4455260Durometer 60A (Medium Hard)Black4 Full-Length PET Sleeves, 8 Phenolic Washers, 8 Zinc-Plated Metal Washers9165K72000000
    3/4
    		1 1/16"3 7/8"4455260Durometer 60A (Medium Hard)Black4 Full-Length PET Sleeves, 8 Phenolic Washers, 8 Zinc-Plated Metal Washers9165K7300000
    1
    		1 5/16"4 1/4"4455260Durometer 60A (Medium Hard)Black4 Full-Length PET Sleeves, 8 Phenolic Washers, 8 Zinc-Plated Metal Washers9165K6100000
    1 1/2
    		1 29/32"5"4455260Durometer 60A (Medium Hard)Black4 Full-Length PET Sleeves, 8 Phenolic Washers, 8 Zinc-Plated Metal Washers9165K7400000
    2
    		2 3/8"6"4455260Durometer 60A (Medium Hard)Black4 Full-Length PET Sleeves, 8 Phenolic Washers, 8 Zinc-Plated Metal Washers9165K6200000
    2 1/2
    		2 7/8"7"4455260Durometer 60A (Medium Hard)Black4 Full-Length PET Sleeves, 8 Phenolic Washers, 8 Zinc-Plated Metal Washers9165K6300000
    3
    		3"7 1/2"4455260Durometer 60A (Medium Hard)Black4 Full-Length PET Sleeves, 8 Phenolic Washers, 8 Zinc-Plated Metal Washers9165K6400000
    4
    		4"9"8455260Durometer 60A (Medium Hard)Black8 Full-Length PET Sleeves, 16 Phenolic Washers, 16 Zinc-Plated Metal Washers9165K6500000
    5
    		5"10"8455260Durometer 60A (Medium Hard)Black8 Full-Length PET Sleeves, 16 Phenolic Washers, 16 Zinc-Plated Metal Washers9165K6600000
    6
    		6 5/8"11"8455260Durometer 60A (Medium Hard)Black8 Full-Length PET Sleeves, 16 Phenolic Washers, 16 Zinc-Plated Metal Washers9165K6700000
    8
    		8 5/8"13 1/2"8455260Durometer 60A (Medium Hard)Black8 Full-Length PET Sleeves, 16 Phenolic Washers, 16 Zinc-Plated Metal Washers9165K6800000
    10
    		10 3/4"16"12455260Durometer 60A (Medium Hard)Black12 Full-Length PET Sleeves, 24 Phenolic Washers, 24 Zinc-Plated Metal Washers9165K69000000
    12
    		12 3/4"19"12455260Durometer 60A (Medium Hard)Black12 Full-Length PET Sleeves, 24 Phenolic Washers, 24 Zinc-Plated Metal Washers9165K71000000
     

    Oil-Resistant Buna-N Gaskets for Grooved-End Pipe Fittings

    Image of Product. Front orientation. Pipe Gaskets. Oil-Resistant Buna-N Gaskets for Grooved-End Pipe Fittings.
    Create a tight seal on grooved-end pipe fittings that are exposed to oil. These gaskets are Buna-N, so they won't break down from oil.
    For Pipe
    Size
    ID
    OD
    Thk.
    Max. Pressure,
    psi
    Temp. Range,
    ° F
    Color
    Each
    2 1/2
    		2 7/8"3 3/4"1 3/32"750-20 to 180Black5723T87000000
    3
    		3 1/2"4 1/2"1 3/32"750-20 to 180Black5723T33200000
    4
    		4 1/2"5 3/4"1 7/32"750-20 to 180Black5723T333000000
    back to top