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SEALS FOR OIL FIELD APPLICATIONS

BACKUP-RINGS

When a system is operating under high pressure, there is a greater performance demand on the O-Ring. When subjected to pressure, the O-Ring rubber tends to flow into the clearance gaps between the adjacent parts of the machine. At a lower pressure, the extrusion effect does not hamper the performance, however at a higher pressure this can damage the O-Rings.

Thus, in order to avoid permanent damage to the O-Rings at high pressures, special precautions such as using an appropriate Back-up Ring need to be taken.

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BACKUP-RINGS In Detail

Diyak Ltd. supplies Back-Up Rings in the following AS-568A Standard Sizes. We can supply you custom made Back-Up Rings based on your requirements.

AS-568 ID TOL. R T A TOL. W TOL. ID X DD XA
NO. d ± ±0.010 (REF) ± ± (mm)
Back-up Ring 006 0.14 0.005 0.087 0.049 0.045 0.003 0.053 0.003 3.56×6.26×1.14
Back-up Ring 007 0.171 0.005 0.087 0.049 0.045 0.003 0.053 0.003 4.74×7.04×1.14
Back-up Ring 008 0.202 0.005 0.087 0.049 0.045 0.003 0.053 0.003 5.13×7.83×1.14
Back-up Ring 009 0.234 0.005 0.087 0.049 0.045 0.003 0.053 0.003 5.94×8.64×1.14
Back-up Ring 010 0.265 0.005 0.087 0.049 0.045 0.003 0.053 0.003 6.73×9.43×1.14
Back-up Ring 011 0.327 0.005 0.087 0.049 0.045 0.003 0.053 0.003 8.31×11.00×1.14
Back-up Ring 012 0.39 0.005 0.087 0.049 0.045 0.003 0.053 0.003 9.91×12.61×1.14
Back-up Ring 013 0.455 0.005 0.087 0.049 0.045 0.003 0.053 0.003 11.56×14.26×1.14
Back-up Ring 014 0.518 0.005 0.087 0.049 0.045 0.003 0.053 0.003 13.16×15.86×1.14
Back-up Ring 015 0.58 0.007 0.087 0.049 0.045 0.003 0.053 0.003 14.73×17.43×1.14
Back-up Ring 016 0.643 0.009 0.087 0.049 0.045 0.003 0.053 0.003 16.33×19.03×1.14
Back-up Ring 017 0.705 0.009 0.087 0.049 0.045 0.003 0.053 0.003 17.91×20.61×1.14
Back-up Ring 018 0.768 0.009 0.087 0.049 0.045 0.003 0.053 0.003 19.51×22.21×1.14
Back-up Ring 019 0.83 0.009 0.087 0.049 0.045 0.003 0.053 0.003 21.08×23.78×1.14
Back-up Ring 020 0.893 0.009 0.087 0.049 0.045 0.003 0.053 0.003 22.68×25.38×1.14
Back-up Ring 021 0.955 0.009 0.087 0.049 0.045 0.003 0.053 0.003 24.26×26.96×1.14
Back-up Ring 022 1.018 0.01 0.087 0.049 0.045 0.003 0.053 0.003 25.86×28.56×1.14
Back-up Ring 023 1.08 0.01 0.087 0.049 0.045 0.003 0.053 0.003 27.43×30.13×1.14
Back-up Ring 024 1.143 0.01 0.087 0.049 0.045 0.003 0.053 0.003 29.03×31.73×1.14
Back-up Ring 025 1.205 0.011 0.087 0.049 0.045 0.003 0.053 0.003 30.61×33.31×1.14
Back-up Ring 026 1.268 0.011 0.087 0.049 0.045 0.003 0.053 0.003 32.21×34.91×1.14
Back-up Ring 027 1.33 0.011 0.087 0.049 0.045 0.003 0.053 0.003 33.78×36.48×1.14
Back-up Ring 028 1.393 0.013 0.087 0.049 0.045 0.003 0.053 0.003 35.38×38.08×1.14
Back-up Ring 029 1.518 0.013 0.087 0.049 0.045 0.003 0.053 0.003 38.56×41.26×1.14
Back-up Ring 030 1.643 0.013 0.087 0.049 0.045 0.003 0.053 0.003 41.73×44.43×1.14
Back-up Ring 031 1.768 0.015 0.087 0.049 0.045 0.003 0.053 0.003 44.91×47.61×1.14
Back-up Ring 032 1.893 0.015 0.087 0.049 0.045 0.003 0.053 0.003 48.08×50.78×1.14
Back-up Ring 033 2.018 0.018 0.087 0.049 0.045 0.003 0.053 0.003 51.26×53.96×1.14
Back-up Ring 034 2.143 0.018 0.087 0.049 0.045 0.003 0.053 0.003 54.53×57.13×1.14
Back-up Ring 035 2.268 0.018 0.087 0.049 0.045 0.003 0.053 0.003 57.61×60.31×1.14
Back-up Ring 036 2.393 0.018 0.087 0.049 0.045 0.003 0.053 0.003 60.78×63.48×1.14
Back-up Ring 037 2.518 0.018 0.087 0.049 0.045 0.003 0.053 0.003 63.96×66.66×1.14
Back-up Ring 038 2.643 0.02 0.087 0.049 0.045 0.003 0.053 0.003 67.13×69.83×1.14
Back-up Ring 039 2.768 0.02 0.087 0.049 0.045 0.003 0.053 0.003 70.31×73.01×1.14
Back-up Ring 040 2.893 0.02 0.087 0.049 0.045 0.003 0.053 0.003 73.48×76.18×1.14
Back-up Ring 041 3.018 0.024 0.087 0.049 0.045 0.003 0.053 0.003 76.66×79.36×1.14
Back-up Ring 042 3.268 0.024 0.087 0.049 0.045 0.003 0.053 0.003 83.01×85.71×1.14
Back-up Ring 043 3.518 0.024 0.087 0.049 0.045 0.003 0.053 0.003 89.36×92.06×1.14
Back-up Ring 044 3.768 0.027 0.087 0.049 0.045 0.003 0.053 0.003 95.71×98.41×1.14
Back-up Ring 045 4.018 0.027 0.087 0.049 0.045 0.003 0.053 0.003 102.06×104.76×1.14
Back-up Ring 046 4.268 0.03 0.087 0.049 0.045 0.003 0.053 0.003 108.41×111.11×1.14
Back-up Ring 047 4.518 0.03 0.087 0.049 0.045 0.003 0.053 0.003 114.76×117.46×1.14
Back-up Ring 048 4.768 0.03 0.087 0.049 0.045 0.003 0.053 0.003 121.11×123.81×1.14
Back-up Ring 049 5.018 0.037 0.087 0.049 0.045 0.003 0.053 0.003 127.46×130.16×1.14
Back-up Ring 050 5.268 0.037 0.087 0.049 0.045 0.003 0.053 0.003 133.81×136.50×1.14
AS-568 ID TOL. R T A TOL. W TOL. ID X DD XA
NO. d ± ±0.010 (REF) ± ± (mm)
Back-up Ring 110 0.39 0.005 0.129 0.053 0.045 0.003 0.086 0.003 9.91×14.27×1.14
Back-up Ring 111 0.452 0.005 0.129 0.053 0.045 0.003 0.086 0.003 11.48×15.84×1.14
Back-up Ring 112 0.515 0.007 0.129 0.053 0.045 0.003 0.086 0.003 13.08×17.44×1.14
Back-up Ring 113 0.577 0.009 0.129 0.053 0.045 0.003 0.086 0.003 14.66×19.02×1.14
Back-up Ring 114 0.64 0.009 0.129 0.053 0.045 0.003 0.086 0.003 16.26×20.62×1.14
Back-up Ring 115 0.702 0.009 0.129 0.053 0.045 0.003 0.086 0.003 17.83×22.19×1.14
Back-up Ring 116 0.765 0.009 0.129 0.053 0.045 0.003 0.086 0.003 19.43×23.79×1.14
Back-up Ring 117 0.831 0.01 0.129 0.053 0.045 0.003 0.086 0.003 21.11×25.47×1.14
Back-up Ring 118 0.893 0.01 0.129 0.053 0.045 0.003 0.086 0.003 22.68×27.04×1.14
Back-up Ring 119 0.956 0.01 0.129 0.053 0.045 0.003 0.086 0.003 24.28×28.64×1.14
Back-up Ring 120 1.018 0.01 0.129 0.053 0.045 0.003 0.086 0.003 25.86×30.22×1.14
Back-up Ring 121 1.081 0.01 0.129 0.053 0.045 0.003 0.086 0.003 27.46×31.82×1.14
Back-up Ring 122 1.143 0.01 0.129 0.053 0.045 0.003 0.086 0.003 29.03×33.39×1.14
Back-up Ring 123 1.206 0.012 0.129 0.053 0.045 0.003 0.086 0.003 30.63×34.99×1.14
Back-up Ring 124 1.268 0.012 0.129 0.053 0.045 0.003 0.086 0.003 32.21×36.57×1.14
Back-up Ring 125 1.331 0.012 0.129 0.053 0.045 0.003 0.086 0.003 33.81×38.17×1.14
Back-up Ring 126 1.393 0.012 0.129 0.053 0.045 0.003 0.086 0.003 35.38×39.74×1.14
Back-up Ring 127 1.456 0.012 0.129 0.053 0.045 0.003 0.086 0.003 36.98×41.34×1.14
Back-up Ring 128 1.518 0.012 0.129 0.053 0.045 0.003 0.086 0.003 38.56×42.92×1.14
Back-up Ring 129 1.581 0.015 0.129 0.053 0.045 0.003 0.086 0.003 40.16×44.52×1.14
Back-up Ring 130 1.643 0.015 0.129 0.053 0.045 0.003 0.086 0.003 41.73×46.09×1.14
Back-up Ring 131 1.706 0.015 0.129 0.053 0.045 0.003 0.086 0.003 43.33×47.69×1.14
Back-up Ring 132 1.768 0.015 0.129 0.053 0.045 0.003 0.086 0.003 44.91×49.27×1.14
Back-up Ring 133 1.831 0.015 0.129 0.053 0.045 0.003 0.086 0.003 46.51×50.87×1.14
Back-up Ring 134 1.893 0.015 0.129 0.053 0.045 0.003 0.086 0.003 48.08×52.44×1.14
Back-up Ring 135 1.956 0.017 0.129 0.053 0.045 0.003 0.086 0.003 49.86×54.04×1.14
Back-up Ring 136 2.018 0.017 0.129 0.053 0.045 0.003 0.086 0.003 51.26×55.62×1.14
Back-up Ring 137 2.081 0.017 0.129 0.053 0.045 0.003 0.086 0.003 52.86×57.22×1.14
Back-up Ring 138 2.143 0.017 0.129 0.053 0.045 0.003 0.086 0.003 54.43×58.79×1.14
Back-up Ring 139 2.206 0.017 0.129 0.053 0.045 0.003 0.086 0.003 56.03×60.39×1.14
Back-up Ring 140 2.268 0.017 0.129 0.053 0.045 0.003 0.086 0.003 57.61×61.97×1.14
Back-up Ring 141 2.331 0.02 0.129 0.053 0.045 0.003 0.086 0.003 59.21×63.57×1.14
Back-up Ring 142 2.393 0.02 0.129 0.053 0.045 0.003 0.086 0.003 60.78×65.14×1.14
Back-up Ring 143 2.456 0.02 0.129 0.053 0.045 0.003 0.086 0.003 62.38×66.74×1.14
Back-up Ring 144 2.518 0.02 0.129 0.053 0.045 0.003 0.086 0.003 63.96×68.32×1.14
Back-up Ring 145 2.581 0.02 0.129 0.053 0.045 0.003 0.086 0.003 65.56×69.92×1.14
Back-up Ring 146 2.643 0.02 0.129 0.053 0.045 0.003 0.086 0.003 67.13×71.49×1.14
Back-up Ring 147 2.706 0.022 0.129 0.053 0.045 0.003 0.086 0.003 68.73×73.09×1.14
Back-up Ring 148 2.768 0.022 0.129 0.053 0.045 0.003 0.086 0.003 70.31×74.67×1.14
Back-up Ring 149 2.831 0.022 0.129 0.053 0.045 0.003 0.086 0.003 71.91×76.27×1.14
Back-up Ring 150 2.893 0.022 0.129 0.053 0.045 0.003 0.086 0.003 73.48×77.84×1.14
Back-up Ring 151 3.018 0.024 0.129 0.053 0.045 0.003 0.086 0.003 76.66×81.02×1.14
Back-up Ring 152 3.268 0.024 0.129 0.053 0.045 0.003 0.086 0.003 83.01×87.37×1.14
Back-up Ring 153 3.518 0.024 0.129 0.053 0.045 0.003 0.086 0.003 89.36×93.72×1.14
Back-up Ring 154 3.708 0.028 0.129 0.053 0.045 0.003 0.086 0.003 95.71×100.07×1.14
AS-568 ID TOL. R T A TOL. W TOL. ID X DD XA
NO. d ± ±0.010 (REF) ± ± (mm)
Back-up Ring 155 4.018 0.028 0.129 0.053 0.045 0.003 0.086 0.003 102.06×106.42×1.14
Back-up Ring 156 4.268 0.03 0.129 0.053 0.045 0.003 0.086 0.003 108.41×112.77×1.14
Back-up Ring 157 4.518 0.03 0.129 0.053 0.045 0.003 0.086 0.003 114.76×119.12×1.14
Back-up Ring 158 4.768 0.03 0.129 0.053 0.045 0.003 0.086 0.003 121.11×125.47×1.14
Back-up Ring 159 5.018 0.035 0.129 0.053 0.045 0.003 0.086 0.003 127.46×131.82×1.14
Back-up Ring 160 5.268 0.035 0.129 0.053 0.045 0.003 0.086 0.003 133.81×138.17×1.14
Back-up Ring 161 5.518 0.035 0.129 0.053 0.045 0.003 0.086 0.003 140.16×144.52×1.14
Back-up Ring 162 5.768 0.035 0.129 0.053 0.045 0.003 0.086 0.003 146.51×150.87×1.14
Back-up Ring 163 6.018 0.035 0.129 0.053 0.045 0.003 0.086 0.003 152.86×157.22×1.14
Back-up Ring 164 6.268 0.04 0.129 0.053 0.045 0.003 0.086 0.003 159.21×163.57×1.14
Back-up Ring 165 6.518 0.04 0.129 0.053 0.045 0.003 0.086 0.003 165.56×169.92×1.14
Back-up Ring 166 6.768 0.04 0.129 0.053 0.045 0.003 0.086 0.003 171.91×176.27×1.14
Back-up Ring 167 7.018 0.04 0.129 0.053 0.045 0.003 0.086 0.003 178.25×182.61×1.14
Back-up Ring 168 7.268 0.045 0.129 0.053 0.045 0.003 0.086 0.003 184.61×188.97×1.14
Back-up Ring 169 7.518 0.045 0.129 0.053 0.045 0.003 0.086 0.003 190.96×195.32×1.14
Back-up Ring 170 7.768 0.045 0.129 0.053 0.045 0.003 0.086 0.003 197.31×201.67×1.14
Back-up Ring 171 8.018 0.045 0.129 0.053 0.045 0.003 0.086 0.003 203.66×208.02×1.14
Back-up Ring 172 8.268 0.05 0.129 0.053 0.045 0.003 0.086 0.003 210.01×214.37×1.14
Back-up Ring 173 8.518 0.05 0.129 0.053 0.045 0.003 0.086 0.003 216.36×220.72×1.14
Back-up Ring 174 8.768 0.05 0.129 0.053 0.045 0.003 0.086 0.003 222.71×227.07×1.14
Back-up Ring 175 9.018 0.05 0.129 0.053 0.045 0.003 0.086 0.003 229.06×233.42×1.14
Back-up Ring 176 9.268 0.055 0.129 0.053 0.045 0.003 0.086 0.003 235.41×239.77×1.14
Back-up Ring 177 9.518 0.055 0.129 0.053 0.045 0.003 0.086 0.003 241.76×246.12×1.14
Back-up Ring 178 9.768 0.055 0.129 0.053 0.045 0.003 0.086 0.003 248.11×252.47×1.14
Back-up Ring 210 0.766 0.01 0.174 0.05 0.04 0.003 0.118 0.004 19.46×25.46×1.02
Back-up Ring 211 0.828 0.01 0.174 0.05 0.04 0.003 0.118 0.004 21.03×27.03×1.02
Back-up Ring 212 0.891 0.01 0.174 0.05 0.04 0.003 0.118 0.004 22.63×28.63×1.02
Back-up Ring 213 0.953 0.01 0.174 0.05 0.04 0.003 0.118 0.004 24.21×30.21×1.02
Back-up Ring 214 1.016 0.01 0.174 0.05 0.04 0.003 0.118 0.004 25.81×31.81×1.02
Back-up Ring 215 1.078 0.01 0.174 0.05 0.04 0.003 0.118 0.004 27.38×33.3×1.02
Back-up Ring 216 1.141 0.012 0.174 0.05 0.04 0.003 0.118 0.004 28.98×34.98×1.02
Back-up Ring 217 1.203 0.012 0.174 0.05 0.04 0.003 0.118 0.004 30.56×36.56×1.02
Back-up Ring 218 1.266 0.012 0.174 0.05 0.04 0.003 0.118 0.004 32.16×38.16×1.02
Back-up Ring 219 1.334 0.012 0.174 0.05 0.04 0.003 0.118 0.004 33.88×39.88×1.02
Back-up Ring 220 1.397 0.012 0.174 0.05 0.04 0.003 0.118 0.004 35.50×41.50×1.02
Back-up Ring 221 1.459 0.012 0.174 0.05 0.04 0.003 0.118 0.004 37.06×43.06×1.02
Back-up Ring 222 1.522 0.015 0.174 0.05 0.04 0.003 0.118 0.004 38.66×44.66×1.02
Back-up Ring 223 1.647 0.015 0.174 0.05 0.04 0.003 0.118 0.004 41.83×47.83×1.02
Back-up Ring 224 1.772 0.015 0.174 0.05 0.04 0.003 0.118 0.004 45.01×51.01×1.02
Back-up Ring 225 1.897 0.018 0.174 0.05 0.04 0.003 0.118 0.004 48.18×54.18×1.02
Back-up Ring 226 2.022 0.018 0.174 0.05 0.04 0.003 0.118 0.004 51.36×57.36×1.02
Back-up Ring 227 2.147 0.018 0.174 0.05 0.04 0.003 0.118 0.004 54.53×60.53×1.02
Back-up Ring 228 2.272 0.02 0.174 0.05 0.04 0.003 0.118 0.004 57.71×63.71×1.02
Back-up Ring 229 2.397 0.02 0.174 0.05 0.04 0.003 0.118 0.004 60.88×68.88×1.02
Back-up Ring 230 2.522 0.02 0.174 0.05 0.04 0.003 0.118 0.004 64.06×70.06×1.02
Back-up Ring 231 2.631 0.02 0.174 0.05 0.04 0.003 0.118 0.004 66.83×72.83×1.02
Back-up Ring 232 2.756 0.024 0.174 0.05 0.04 0.003 0.118 0.004 70.00×76.00×1.02
Back-up Ring 233 2.881 0.024 0.174 0.05 0.04 0.003 0.118 0.004 73.18×79.18×1.02
Back-up Ring 234 3.006 0.024 0.174 0.05 0.04 0.003 0.118 0.004 76.35×82.35×1.02
Back-up Ring 235 3.131 0.024 0.174 0.05 0.04 0.003 0.118 0.004 79.53×85.53×1.02
Back-up Ring 236 3.256 0.024 0.174 0.05 0.04 0.003 0.118 0.004 82.70×88.70×1.02
Back-up Ring 237 3.381 0.024 0.174 0.05 0.04 0.003 0.118 0.004 85.88×91.88×1.02
Back-up Ring 238 3.506 0.024 0.174 0.05 0.04 0.003 0.118 0.004 89.05×95.05×1.02
Back-up Ring 239 3.631 0.028 0.174 0.05 0.04 0.003 0.118 0.004 92.23×98.23×1.02
Back-up Ring 240 3.756 0.028 0.174 0.05 0.04 0.003 0.118 0.004 95.40×101.40×1.02
Back-up Ring 241 3.881 0.028 0.174 0.05 0.04 0.003 0.118 0.004 98.58×104.58×1.02
Back-up Ring 242 4.006 0.028 0.174 0.05 0.04 0.003 0.118 0.004 101.75×107.75×1.02
Back-up Ring 243 4.131 0.028 0.174 0.05 0.04 0.003 0.118 0.004 104.93×110.93×1.02
Back-up Ring 244 4.256 0.03 0.174 0.05 0.04 0.003 0.118 0.004 108.10×114.10×1.02
Back-up Ring 245 4.381 0.03 0.174 0.05 0.04 0.003 0.118 0.004 111.28×117.28×1.02
Back-up Ring 246 4.506 0.03 0.174 0.05 0.04 0.003 0.118 0.004 114.45×120.45×1.02
Back-up Ring 247 4.631 0.03 0.174 0.05 0.04 0.003 0.118 0.004 117.63×123.63×1.02
Back-up Ring 248 4.768 0.03 0.174 0.05 0.04 0.003 0.118 0.004 121.11×127.11×1.02
Back-up Ring 249 4.893 0.035 0.174 0.05 0.04 0.003 0.118 0.004 124.28×130.28×1.02
Back-up Ring 250 5.018 0.035 0.174 0.05 0.04 0.003 0.118 0.004 127.46×133.46×1.02
AS-568 ID TOL. R T A TOL. W TOL. ID X DD XA
NO. d ± ±0.010 (REF) ± ± (mm)
Back-up Ring 251 5.143 0.035 0.174 0.05 0.04 0.003 0.118 0.004 130.63×136.63×1.02
Back-up Ring 252 5.268 0.035 0.174 0.05 0.04 0.003 0.118 0.004 133.81×139.81×1.02
Back-up Ring 253 5.393 0.035 0.174 0.05 0.04 0.003 0.118 0.004 136.98×142.98×1.02
Back-up Ring 254 5.518 0.035 0.174 0.05 0.04 0.003 0.118 0.004 140.16×146.16×1.02
Back-up Ring 255 5.643 0.035 0.174 0.05 0.04 0.003 0.118 0.004 143.33×149.33×1.02
Back-up Ring 256 5.768 0.035 0.174 0.05 0.04 0.003 0.118 0.004 146.51×152.51×1.02
Back-up Ring 257 5.893 0.035 0.174 0.05 0.04 0.003 0.118 0.004 149.68×155.68×1.02
Back-up Ring 258 6.018 0.035 0.174 0.05 0.04 0.003 0.118 0.004 152.86×158.86×1.02
Back-up Ring 259 6.268 0.04 0.174 0.05 0.04 0.003 0.118 0.004 159.21×165.21×1.02
Back-up Ring 260 6.518 0.04 0.174 0.05 0.04 0.003 0.118 0.004 165.56×171.56×1.02
Back-up Ring 261 6.768 0.04 0.174 0.05 0.04 0.003 0.118 0.004 171.91×177.91×1.02
Back-up Ring 262 7.018 0.04 0.174 0.05 0.04 0.003 0.118 0.004 178.26×184.26×1.02
Back-up Ring 263 7.268 0.045 0.174 0.05 0.04 0.003 0.118 0.004 184.61×190.61×1.02
Back-up Ring 264 7.518 0.045 0.174 0.05 0.04 0.003 0.118 0.004 190.96×196.96×1.02
Back-up Ring 265 7.768 0.045 0.174 0.05 0.04 0.003 0.118 0.004 197.31×203.31×1.02
Back-up Ring 266 8.018 0.045 0.174 0.05 0.04 0.003 0.118 0.004 203.66×209.66×1.02
Back-up Ring 267 8.268 0.05 0.174 0.05 0.04 0.003 0.118 0.004 210.01×216.01×1.02
Back-up Ring 268 8.518 0.05 0.174 0.05 0.04 0.003 0.118 0.004 216.36×222.36×1.02
Back-up Ring 269 8.768 0.05 0.174 0.05 0.04 0.003 0.118 0.004 222.71×228.71×1.02
Back-up Ring 270 9.018 0.05 0.174 0.05 0.04 0.003 0.118 0.004 229.06×235.06×1.02
Back-up Ring 271 9.268 0.055 0.174 0.05 0.04 0.003 0.118 0.004 235.41×241.41×1.02
Back-up Ring 272 9.518 0.055 0.174 0.05 0.04 0.003 0.118 0.004 241.76×247.76×1.02
Back-up Ring 273 9.768 0.055 0.174 0.05 0.04 0.003 0.118 0.004 248.11×254.11×1.02
Back-up Ring 274 10.018 0.055 0.174 0.05 0.04 0.003 0.118 0.004 254.46×260.46×1.02
Back-up Ring 275 10.518 0.055 0.174 0.05 0.04 0.003 0.118 0.004 267.16×273.16×1.02
Back-up Ring 276 11.018 0.065 0.174 0.05 0.04 0.003 0.118 0.004 279.86×285.86×1.02
Back-up Ring 277 11.518 0.065 0.174 0.05 0.04 0.003 0.118 0.004 292.56×298.56×1.02
Back-up Ring 278 12.018 0.065 0.174 0.05 0.04 0.003 0.118 0.004 305.26×311.26×1.02
Back-up Ring 279 13.018 0.065 0.174 0.05 0.04 0.003 0.118 0.004 330.66×336.66×1.02
Back-up Ring 280 14.018 0.065 0.174 0.05 0.04 0.003 0.118 0.004 356.05×362.05×1.02
Back-up Ring 281 15.018 0.065 0.174 0.05 0.04 0.003 0.118 0.004 381.46×387.46×1.02
Back-up Ring 325 1.513 0.015 0.262 0.076 0.06 0.004 0.183 0.005 38.43×47.73×1.52
Back-up Ring 326 1.638 0.015 0.262 0.076 0.06 0.004 0.183 0.005 41.61×50.91×1.52
Back-up Ring 327 1.763 0.015 0.262 0.076 0.06 0.004 0.183 0.005 44.78×54.08×1.52
Back-up Ring 328 1.888 0.015 0.262 0.076 0.06 0.004 0.183 0.005 47.96×57.26×1.52
Back-up Ring 329 2.013 0.018 0.262 0.076 0.06 0.004 0.183 0.005 51.13×60.43×1.52
Back-up Ring 330 2.138 0.018 0.262 0.076 0.06 0.004 0.183 0.005 54.31×63.61×1.52
Back-up Ring 331 2.268 0.018 0.262 0.076 0.06 0.004 0.183 0.005 57.61×66.91×1.52
Back-up Ring 332 2.393 0.018 0.262 0.076 0.06 0.004 0.183 0.005 60.78×70.08×1.52
Back-up Ring 333 2.518 0.02 0.262 0.076 0.06 0.004 0.183 0.005 63.96×73.26×1.52
Back-up Ring 334 2.643 0.02 0.262 0.076 0.06 0.004 0.183 0.005 67.13×76.43×1.52
Back-up Ring 335 2.768 0.02 0.262 0.076 0.06 0.004 0.183 0.005 70.31×79.61×1.52
Back-up Ring 336 2.893 0.02 0.262 0.076 0.06 0.004 0.183 0.005 73.48×82.78×1.52
Back-up Ring 337 3.018 0.024 0.262 0.076 0.06 0.004 0.183 0.005 76.66×85.96×1.52
Back-up Ring 338 3.143 0.024 0.262 0.076 0.06 0.004 0.183 0.005 79.83×89.13×1.52
Back-up Ring 339 3.273 0.024 0.262 0.076 0.06 0.004 0.183 0.005 83.13×92.43×1.52
Back-up Ring 340 3.398 0.024 0.262 0.076 0.06 0.004 0.183 0.005 86.31×95.61×1.52
Back-up Ring 341 3.523 0.024 0.262 0.076 0.06 0.004 0.183 0.005 89.48×98.78×1.52
Back-up Ring 342 3.648 0.028 0.262 0.076 0.06 0.004 0.183 0.005 92.66×101.96×1.52
Back-up Ring 343 3.773 0.028 0.262 0.076 0.06 0.004 0.183 0.005 95.83×105.13×1.52
Back-up Ring 344 3.898 0.028 0.262 0.076 0.06 0.004 0.183 0.005 99.01×108.31×1.52
Back-up Ring 345 4.028 0.028 0.262 0.076 0.06 0.004 0.183 0.005 102.31×111.61×1.52
Back-up Ring 346 4.153 0.028 0.262 0.076 0.06 0.004 0.183 0.005 105.49×114.79×1.52
Back-up Ring 347 4.278 0.03 0.262 0.076 0.06 0.004 0.183 0.005 108.66×117.96×1.52
Back-up Ring 348 4.403 0.03 0.262 0.076 0.06 0.004 0.183 0.005 111.84×121.14×1.52
Back-up Ring 349 4.528 0.03 0.262 0.076 0.06 0.004 0.183 0.005 115.01×124.31×1.52
Back-up Ring 425 4.551 0.033 0.344 0.117 0.096 0.005 0.236 0.006 115.60×127.58×2.44
Back-up Ring 426 4.676 0.033 0.344 0.117 0.096 0.005 0.236 0.006 118.77×130.75×2.44
Back-up Ring 427 4.801 0.033 0.344 0.117 0.096 0.005 0.236 0.006 121.95×133.93×2.44
Back-up Ring 428 4.926 0.033 0.344 0.117 0.096 0.005 0.236 0.006 125.20×137.8×2.44
Back-up Ring 429 5.051 0.037 0.344 0.117 0.096 0.005 0.236 0.006 128.30×140.28×2.44
Back-up Ring 430 5.176 0.037 0.344 0.117 0.096 0.005 0.236 0.006 131.47×143.45×2.44
Back-up Ring 431 5.301 0.037 0.344 0.117 0.096 0.005 0.236 0.006 134.65×146.63×2.44
Back-up Ring 432 5.426 0.037 0.344 0.117 0.096 0.005 0.236 0.006 137.82×149.80×2.44
Back-up Ring 433 5.551 0.037 0.344 0.117 0.096 0.005 0.236 0.006 141.00×152.98×2.44

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