Home > Products > Stainless Steel Backup Rings > Stainless Steel Backup Ring 1" to 22"Stainless Steel Convoluted Deltaflex® Backup Rings 1" to 22"
Ongoing engineering design efforts may affect the technical information listed in our publications.
| DIMENSIONS | Weight (lbs.) | Operating Pressure |
| SIZE | SDR | O.D. | T | I.D. | Bolt Count | Bolt Hole Size (H) | Bolt Hole Circle (BC) | R |
| 1” | 7 | 4.250 | 0.560 | 1.380 | 4 | 0.630 | 3.130 | 0.125 | 2.0 | 267 |
| 1 ½” | 7 | 5.000 | 0.690 | 1.970 | 4 | 0.630 | 3.880 | 0.220 | 2.0 | 267 |
| 2” | 7 | 6.000 | 0.750 | 2.460 | 4 | 0.750 | 4.750 | 0.270 | 3.0 | 267 |
| 2” | 11 | 6.000 | 0.400 | 2.460 | 4 | 0.750 | 4.750 | 0.270 | 2.0 | 160 |
| 3” | 7 | 7.500 | 0.940 | 3.600 | 4 | 0.750 | 6.000 | 0.330 | 5.0 | 267 |
| 3” | 13.5 | 7.500 | 0.400 | 3.600 | 4 | 0.750 | 6.000 | 0.330 | 3.0 | 128 |
| 4” | 7 | 9.000 | 0.940 | 4.600 | 8 | 0.750 | 7.500 | 0.390 | 6.0 | 267 |
| 4” | 13.5 | 9.000 | 0.500 | 4.600 | 8 | 0.750 | 7.500 | 0.390 | 5.0 | 128 |
| 6” | 7 | 11.000 | 1.000 | 6.750 | 8 | 0.880 | 9.500 | 0.440 | 9.0 | 267 |
| 6” | 13.5 | 11.000 | 0.600 | 6.750 | 8 | 0.880 | 9.500 | 0.440 | 6.0 | 128 |
| 8” | 7 | 13.500 | 1.120 | 8.750 | 8 | 0.880 | 11.750 | 0.440 | 12.0 | 267 |
| 8” | 13.5 | 13.500 | 0.700 | 8.750 | 8 | 0.880 | 11.750 | 0.440 | 9.0 | 128 |
| 10” | 7 | 16.000 | 1.270 | 10.920 | 12 | 1.000 | 14.250 | 0.500 | 20.0 | 267 |
| 10” | 13.5 | 16.000 | 0.900 | 10.920 | 12 | 1.000 | 14.250 | 0.420 | 12.0 | 128 |
| 12” | 7 | 19.000 | 1.770 | 12.920 | 12 | 1.000 | 17.000 | 0.500 | 37.0 | 267 |
| 12” | 11 | 19.000 | 1.250 | 12.920 | 12 | 1.000 | 17.000 | 0.420 | 24.0 | 160 |
| 12” | 13.5 | 19.000 | 1.050 | 12.920 | 12 | 1.000 | 17.000 | 0.420 | 21.0 | 128 |
| 14” | 7 | 21.000 | 1.780 | 14.180 | 12 | 1.130 | 18.750 | 0.410 | 50.0 | 267 |
| 14” | 11 | 21.000 | 1.610 | 14.180 | 12 | 1.130 | 18.750 | 0.430 | 42.0 | 160 |
| 14” | 17 | 21.000 | 1.130 | 14.180 | 12 | 1.130 | 18.750 | 0.410 | 25.0 | 100 |
| 16” | 7 | 23.500 | 2.170 | 16.190 | 16 | 1.130 | 21.250 | 0.400 | 67.0 | 267 |
| 16” | 11 | 23.500 | 1.890 | 16.190 | 16 | 1.130 | 21.250 | 0.430 | 52.0 | 160 |
| 16” | 13.5 | 23.500 | 1.440 | 16.190 | 16 | 1.130 | 21.250 | 0.500 | 52.0 | 128 |
| 16” | 17 | 23.500 | 1.250 | 16.190 | 16 | 1.130 | 21.250 | 0.410 | 31.0 | 100 |
| 18” | 7 | 25.000 | 2.060 | 18.200 | 16 | 1.250 | 22.750 | 0.400 | 67.0 | 267 |
| 18” | 11 | 25.000 | 1.560 | 18.200 | 16 | 1.250 | 22.750 | 0.500 | 57.0 | 160 |
| 18” | 21 | 25.000 | 1.340 | 18.200 | 16 | 1.250 | 22.750 | 0.410 | 33.0 | 80 |
| 20” | 7 | 27.500 | 2.270 | 20.250 | 20 | 1.250 | 25.000 | 0.310 | 90.0 | 267 |
| 20” | 11 | 27.500 | 2.150 | 20.250 | 20 | 1.250 | 25.000 | 0.430 | 76.0 | 160 |
| 20” | 21 | 27.500 | 1.470 | 20.250 | 20 | 1.250 | 25.000 | 0.375 | 39.0 | 80 |
| 22” | 7 | 29.500 | 2.430 | 22.250 | 20 | 1.380 | 27.250 | 0.310 | 106.0 | 267 |
| 22” | 11 | 29.500 | 2.250 | 22.250 | 20 | 1.380 | 27.250 | 0.430 | 88.0 | 160 |
| 22” | 21 | 29.500 | 1.540 | 22.250 | 20 | 1.380 | 27.250 | 0.375 | 50.0 | 80 |