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    132 Products
    About O-Rings
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    Find the right size, compare compatible materials, and choose the best cross section shape for your O-ring.

    Ultra-Chemical-Resistant DuPont Kalrez 4079 O-Rings

    Image of Product. Bottom orientation. O-Rings. Ultra-Chemical-Resistant DuPont Kalrez 4079 O-Rings.
    Image of Attribute. Front orientation. CrossSection view. Contains Annotated. O-Rings. Ultra-Chemical-Resistant DuPont Kalrez 4079 O-Rings.
    Made of Kalrez 4079, these O-rings combine the chemical resistance of PTFE with the springy softness of Viton® fluoroelastomer. They hold up to a wide range of chemicals, such as acetone, methyl ethyl ketone (MEK), potassium hydroxide, and most acids.
    Fractional
    Each
    Dash
    No.
    ID
    OD
    ID
    OD
    Hardness
    Specs. Met
    Temp. Range,
    ° F
    Color
    1-9
    10-Up
    1/32 Fractional Width (0.04" Wide)
    001
    1/323/320.029"0.109"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K31000000000000
     
    3/64 Fractional (Width 0.05" Wide)
    002
    3/649/640.042"0.142"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K1110000000000
     
    1/16 Fractional Width (0.06" Wide)
    003
    1/163/160.056"0.176"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K1120000000000
     
    1/16 Fractional Width (0.07" Wide)
    004
    5/6413/640.07"0.21"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K610000000000
    005
    3/327/320.101"0.241"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K330000000000
    006
    1/81/40.114"0.254"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K110000000000
    007
    5/329/320.145"0.285"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K120000000000
    008
    3/165/160.176"0.316"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K130000000000
    009
    7/3211/320.208"0.348"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K140000000000
    010
    1/43/80.239"0.379"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K150000000000
    011
    5/167/160.301"0.441"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K160000000000
    012
    3/81/20.364"0.504"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K170000000000
    013
    7/169/160.426"0.566"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K180000000000
    014
    1/25/80.489"0.629"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K190000000000
    015
    9/1611/160.551"0.691"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K210000000000
    016
    5/83/40.614"0.754"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K220000000000
    017
    11/1613/160.676"0.816"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K620000000000
    018
    3/47/80.739"0.879"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K340000000000
    019
    13/1615/160.801"0.941"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K1130000000000
    020
    7/810.864"1.004"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K1140000000000
    021
    15/161 1/160.926"1.066"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K350000000000
    022
    11 1/80.989"1.129"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K1150000000000
    023
    1 1/161 3/161.051"1.191"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K1160000000000
    024
    1 1/81 1/41.114"1.254"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K1170000000000
    025
    1 3/161 5/161.176"1.316"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K11800000000000
    026
    1 1/41 3/81.239"1.379"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K6300000000000
    027
    1 5/161 7/161.301"1.441"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K119000000000000
    028
    1 3/81 1/21.364"1.504"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K64000000000000
    029
    1 1/21 5/81.489"1.629"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K211000000000000
    030
    1 5/81 3/41.614"1.754"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K37000000000000
    031
    1 3/41 7/81.739"1.879"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K212000000000000
    032
    1 7/821.864"2.004"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K213000000000000
    033
    22 1/81.989"2.129"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K214000000000000
    034
    2 1/82 1/42.114"2.254"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K215000000000000
     
    3/32 Fractional Width (0.103" Wide)
    104
    1/85/160.112"0.318"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K4160000000000
    105
    5/3211/320.143"0.349"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K4170000000000
    106
    3/163/80.174"0.38"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K4180000000000
    107
    7/3213/320.206"0.412"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K4190000000000
    108
    1/47/160.237"0.443"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K380000000000
    109
    5/161/20.299"0.505"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K4210000000000
    110
    3/89/160.362"0.568"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K230000000000
    111
    7/165/80.424"0.63"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K240000000000
    112
    1/211/160.487"0.693"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K250000000000
    113
    9/163/40.549"0.755"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K260000000000
    114
    5/813/160.612"0.818"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K270000000000
    115
    11/167/80.674"0.88"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K280000000000
    116
    3/415/160.737"0.943"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K290000000000
    117
    13/1610.799"1.005"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K6500000000000
    118
    7/81 1/160.862"1.068"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K6600000000000
    119
    15/161 1/80.924"1.13"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K42200000000000
    120
    11 3/160.987"1.193"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K39000000000000
    121
    1 1/161 1/41.049"1.255"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K959000000000000
    122
    1 1/81 5/161.112"1.318"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K41000000000000
    123
    1 3/161 3/81.174"1.38"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K42000000000000
    124
    1 1/41 7/161.237"1.443"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K423000000000000
    125
    1 5/161 1/21.299"1.505"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K424000000000000
    126
    1 3/81 9/161.362"1.568"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K425000000000000
    127
    1 7/161 5/81.424"1.63"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K43000000000000
    128
    1 1/21 11/161.487"1.693"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K426000000000000
    129
    1 9/161 3/41.549"1.755"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K427000000000000
    131
    1 11/161 7/81.674"1.88"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K429000000000000
    132
    1 3/41 15/161.737"1.943"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K431000000000000
    137
    2 1/162 1/42.05"2.256"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K436000000000000
    142
    2 3/82 9/162.362"2.568"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K512000000000000
    152
    3 1/43 7/163.237"3.443"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K523000000000000
     
    1/8 Fractional Width (0.139" Wide)
    201
    3/167/160.171"0.449"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K6330000000000
    202
    1/41/20.234"0.512"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K6340000000000
    203
    5/169/160.296"0.574"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K63500000000000
    204
    3/85/80.359"0.637"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K6700000000000
    206
    1/23/40.484"0.762"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K44000000000000
    207
    9/1613/160.546"0.824"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K237000000000000
    208
    5/87/80.609"0.887"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K45000000000000
    210
    3/410.734"1.012"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K68000000000000
    211
    13/161 1/160.796"1.074"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K47000000000000
    212
    7/81 1/80.859"1.137"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K69000000000000
    213
    15/161 3/160.921"1.199"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K639000000000000
    214
    11 1/40.984"1.262"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K48000000000000
    215
    1 1/161 5/161.046"1.324"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K641000000000000
    216
    1 1/81 3/81.109"1.387"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K71000000000000
    217
    1 3/161 7/161.171"1.449"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K49000000000000
    218
    1 1/41 1/21.234"1.512"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K72000000000000
    220
    1 3/81 5/81.359"1.637"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K73000000000000
    221
    1 7/161 11/161.421"1.699"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K643000000000000
    222
    1 1/21 3/41.484"1.762"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K74000000000000
    223
    1 5/81 7/81.609"1.887"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K644000000000000
    224
    1 3/421.734"2.012"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K75000000000000
    225
    1 7/82 1/81.859"2.137"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K645000000000000
    226
    22 1/41.984"2.262"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K646000000000000
    227
    2 1/82 3/82.109"2.387"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K76000000000000
    228
    2 1/42 1/22.234"2.512"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K647000000000000
    229
    2 3/82 5/82.359"2.637"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K648000000000000
    230
    2 1/22 3/42.484"2.762"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K649000000000000
    231
    2 5/82 7/82.609"2.887"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K651000000000000
    232
    2 3/432.734"3.012"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K652000000000000
    234
    33 1/42.984"3.262"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K654000000000000
    235
    3 1/83 3/83.109"3.387"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K655000000000000
    236
    3 1/43 1/23.234"3.512"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K656000000000000
    238
    3 1/23 3/43.484"3.762"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K658000000000000
    239
    3 5/83 7/83.609"3.887"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K659000000000000
    243
    4 1/84 3/84.109"4.387"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K674000000000000
    250
    55 1/44.984"5.262"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K712000000000000
    256
    5 3/465.734"6.012"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K718000000000000
    257
    5 7/86 1/85.859"6.137"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K719000000000000
    259
    6 1/46 1/26.234"6.512"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K722000000000000
     
    3/16 Fractional Width (0.21" Wide)
    314
    3/41 1/80.725"1.145"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K756000000000000
    318
    11 3/80.975"1.395"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K761000000000000
    320
    1 1/81 1/21.1"1.52"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K763000000000000
    330
    2 1/82 1/22.1"2.52"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K774000000000000
    339
    3 1/43 5/83.225"3.645"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K785000000000000
     
    1.5 mm Wide
    2.5 mm5.5 mmDurometer 75A (Medium)30 to 600Black1278N2800000000000
    3.5 mm6.5 mmDurometer 75A (Medium)30 to 600Black1278N2500000000000
    7.5 mm10.5 mmDurometer 75A (Medium)30 to 600Black1278N2400000000000
    9 mm12 mmDurometer 75A (Medium)30 to 600Black1278N1600000000000
    12 mm15 mmDurometer 75A (Medium)30 to 600Black1278N1400000000000
     
    1.6 mm Wide
    9.1 mm12.3 mmDurometer 75A (Medium)30 to 600Black1278N2600000000000
     
    2 mm Wide
    4 mm8 mmDurometer 75A (Medium)30 to 600Black1278N1500000000000
    6 mm10 mmDurometer 75A (Medium)30 to 600Black1278N1200000000000
    12 mm16 mmDurometer 75A (Medium)30 to 600Black1278N11000000000000
    13 mm17 mmDurometer 75A (Medium)30 to 600Black1278N21000000000000
    14 mm18 mmDurometer 75A (Medium)30 to 600Black1278N17000000000000
    16 mm20 mmDurometer 75A (Medium)30 to 600Black1278N13000000000000
    18 mm22 mmDurometer 75A (Medium)30 to 600Black1278N22000000000000
    20 mm24 mmDurometer 75A (Medium)30 to 600Black1278N18000000000000
    22 mm26 mmDurometer 75A (Medium)30 to 600Black1278N23000000000000
    26 mm30 mmDurometer 75A (Medium)30 to 600Black1278N27000000000000
     
    2.5 mm Wide
    15 mm20 mmDurometer 75A (Medium)30 to 600Black1278N19000000000000
     

    Ultra-Chemical-Resistant DuPont Kalrez 4079 O-Rings for Straight-Thread Connections

    Image of Product. Bottom orientation. O-Rings. Ultra-Chemical-Resistant DuPont Kalrez 4079 O-Rings for Straight-Thread Connections.
    Image of Attribute. Front orientation. CrossSection view. Contains Annotated. O-Rings. Ultra-Chemical-Resistant DuPont Kalrez 4079 O-Rings for Straight-Thread Connections.
    Also known as Boss O-rings, these O-rings are made for tube fittings with a straight-thread connection. Made of Kalrez 4079, they combine the chemical resistance of PTFE with the springy softness of Viton® fluoroelastomer. They hold up to a wide range of chemicals, such as acetone, methyl ethyl ketone (MEK), potassium hydroxide, and most acids.
    Each
    Dash
    No.
    For Tube
    OD
    Wd.
    ID
    OD
    Hardness
    Specs. Met
    Temp. Range,
    ° F
    Color
    1-9
    10-Up
    902
    1/8"0.064"0.239"0.367"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K938000000000000
    903
    3/16"0.064"0.301"0.429"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K9390000000000
    904
    1/4"0.072"0.351"0.495"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K9410000000000
    906
    3/8"0.078"0.468"0.624"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K9430000000000
    908
    1/2"0.087"0.644"0.818"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K9450000000000
    910
    5/8"0.097"0.755"0.949"Durometer 75A (Medium)ASTM D2000, SAE AS568, SAE J20030 to 600Black9568K9470000000000
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