U-Cups

U-cups are called so because of their unique U-shaped profile. This lip seal, either in single slip or double lip design, is typically made of polyurethane due to some intrinsic qualities associated with that material, such as high strength, resilience, hardness, and abrasion resistance. U-cups are most often used as static seals during hydrostatic pressure testing of steel casing pipes, oil production tubing, and various welded steel pipes.

Built to API 5CT/ISO11960:201l standards, the U-cup seal is able to handle high pressures up to 80 MPa. This sealing device is non-toxic, meaning that it can be put in direct contact with water, emulsified fluid, and hydraulic oil. In the table below we’ve listed nearly 50 models of U-cups for customers to choose from.

U-Cup Installation Drawing

Related Specs

1. Ultra high pressure seal I
No.
Type

Nominal dia .

Sealing ring dimension

Order No.
A B C D H
1 U4.5 114.3 115.4 112.7 188.8 192 31.7 U101
2 U5 127 128.4 125.7 217.5 220.6 31.7 U102
3 U5.24 133.1 134 131.6 188.8 192 31.7 U103
4 U5.5 139.7 140.8 137.8 217.5 221.6 31.7 U104
5 U5.75 146.05 147.3 144.1 217.5 221.6 31.7 U105
6 U6.05 153.7 154.5 151.6 217 221.6 31.7 U106
7 U6.26 159 160.8 157 217.5 221.6 31.7 U107
8 U6.625 168.28 169.4 165.9 217.5 221.6 31.7 U108
9 U7 177.8 177.8 175.5 252.4 255.6 31.7 U109
10 U7.421 188.5 190.2 184.6 252.4 255.6 31.7 U126
11 U7.390 187.71 189.4 185.35 252.4 255.6 31.7 U125
12 U7.625 193.7 193.7 191.9 252.4 255.6 31.7 U110
13 U7.656 194.5 196.2 192.2 252.4 255.6 31.7 U111
14 U7.736 196.5 198.2 194.2 252.4 255.6 31.7 U127
15 U7.875 200 201.7 197.7 252.4 255.6 31.7 U112
16 U8.125 206.38 208 204.3 294.4 298 31.7 U113
17 U8.5 215.9 217.8 213.7 294.4 298 31.7 U114
18 U8.625 219.5 221 217.1 295.3 298 31.7 U115
19 U9.134 232 234 230 295.3 298 31.7 U116
20 U9.625 244.5 246.6 242 322.3 325.4 31.7 U117
21 U9.721 246.92 248.8 243.9 322.3 325.4 31.7 U128
22 U9.843 250 251.7 247 322.3 325.4 31.7 U118
23 U10.25 260.35 262.2 257.7 322.3 325.4 31.7 U133
24 U10.625 269.9 272.2 267.4 322.3 325.4 31.7 U119
25 U10.748 273 275.3 270 322.3 325.4 31.7 U120
26 U10.75 273.05 275.3 270.6 353.4 356.5 31.7 U121
27 U11.125 282.58 284.9 280 353.4 356.5 31.7 U129
28 U11.75 298.5 300.9 295.9 353.4 356.5 31.7 U122
29 U12.835 326 328.4 322.2 423.4 426.6 31.7 U130
30 U13.375 339.725 342.4 335.9 423.4 426.6 31.7 U123
31 U13.625 346 348.3 342 423.4 426.6 31.7 U131
32 U14.375 365.125 367.4 361.3 423.4 426.6 31.7 U124
2. Ultra high pressure seal
No.
Type

Nominal dia .

Sealing ring dimension

Order No.
A B C D H
1 U8.625 219.1 225.203 217.221 268.288 271.463 31.75 U201
2 U9.625 244.5 250.86 242.49 293.69 296.86 31.75 U202
3 U10.75 273.1 279.73 270.92 322.28 325.45 31.75 U203
4 U11.75 298.5 305.38 296.19 354.03 357.2 31.75 U204
5 U12.75 323.9 331.04 321.48 379.43 382.6 31.75 U205
6 U13.252 336.6 344.866 355.061 404.825 408 31.75 U206A
7 U13.375 339.7 347.07 337.26 404.825 408 31.75 U207
8 U14 355.6 363.1 353 423.9 427 31.75 U208A
9 U16 406.4 414.401 403.66 481.025 484.2 31.75 U209A
10 U18 457.2 465.71 454.152 544.53 547.7 44.45 U210
11 U18.625 473.1 481.74 469.95 544.525 547.7 44.45 U211
12 U20 508 517.02 504.7 608.03 611.2 50.8 U212
13 U21 533.4 542 529 633 637 51 U215
14 U24 609.6 619.63 605.79 709.63 712.8 50.8 U214
15 U26 660.4 667.77 6
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