RING JOINT GASKETS
RTJ gaskets are produced in different solid metal types. They are used for high pressure (till 1300 bar) and for high temperature (till 1000°C) and are used where corrosive agents are presents. These gaskets are obtained by mechanical working from forged or laminated metals. RTJ find their mainly application in refining process in crude extraction and in high pressure applications. For their production we use the last edition of the API standard. FMI can supply oval and octagonal ring joint, BX and RX for all applications to suite the flanges design with standard and special styles.
RX Type Gasket
Style RX type RTJ gaskets are manufactured in accordance with both API 6A and ASME B16.20 to suit API 6B and ASME/ANSI B16.5 flanges.
Style RX is a pressure-energized adaptation of the standard Style R gasket. The RX is designed to fit the same groove design as a standard Style R, making the joints interchangeable. The modified design uses a pressure-energized effect that improves the efficiency of the seal as the internal pressure of the system increases.
Pressure: 2,000-5,000 PSI.
DIMENSIONAL DATA – STYLE RX
TOLERANCES:(mm)
A*(width of ring) nbsp; +0.20,-0.000 H*(height of ring) nbsp; +0.20,-0.000 OD(od of ring) +0.5,-0.000 23*(angle) ±1/2°
| RING
NO. |
PRESSLURE ALASSES, API 6B | PITCH
DLAMETER OF RING P |
OUTSIDE
DLAMETER OF RING 0D |
WIDTH
OF RING A |
HELCHT
OF RING H |
WEIGHT
Ibs. |
|||
| 720-960and
2000[Note(1)] |
2900[Note(1)] | 3000 | 5000 | ||||||
| RX20 | 1 1／2 | – | 1 1／2 | 1 1／2 | 68.26 | 76.20 | 8.73 | 19.05 | 0.527 |
| RX23 | 2 | – | – | – | 82.55 | 93.27 | 11.91 | 25.40 | 1.15 |
| RX24 | – | – | 2 | 2 | 95.25 | 105.97 | 11.91 | 25.40 | 1.33 |
| RX25 | – | – | – | 3 1／8 | 101.60 | 109.54 | 8.73 | 19.05 | 1.42 |
| RX26 | 2 1／2 | – | – | – | 101.60 | 111.92 | 11.91 | 25.40 | 1.50 |
| RX27 | – | – | 2 1／2 | 2 1／2 | 107.95 | 118.27 | 11.91 | 25.40 | 1.73 |
| RX31 | 3 | – | 3 | – | 123.83 | 134.54 | 11.91 | 25.40 | 1.91 |
| RX35 | – | – | – | 3 | 136.53 | 147.24 | 11.91 | 25.40 | 2.09 |
| RX37 | 4 | – | 4 | – | 149.23 | 159.94 | 11.91 | 25.40 | 2.27 |
| RX39 | – | – | – | 4 | 161.93 | 172.64 | 11.91 | 25.40 | 2.54 |
| RX41 | 5 | – | 5 | – | 180.98 | 191.69 | 11.91 | 25.40 | 2.72 |
| RX44 | – | – | – | 5 | 193.68 | 204.39 | 11.91 | 25.40 | 2.96 |
| RX45 | 6 | – | 6 | – | 211.14 | 281.85 | 11.91 | 25.40 | 3.66 |
| RX46 | – | – | – | 6 | 211.14 | 222.25 | 13.49 | 28.58 | 8.56 |
| RX47 | – | – | – | 8(2) | 228.60 | 245.27 | 19.84 | 41.28 | 3.79 |
| RX49 | 8 | – | 8 | – | 269.88 | 280.59 | 11.91 | 25.40 | 5.36 |
| RX50 | – | – | – | 8 | 269.88 | 283.37 | 16.67 | 31.75 | 4.56 |
| RX53 | 10 | – | 10 | – | 323.85 | 334.57 | 11.91 | 25.40 | 6.45 |
| RX54 | – | – | – | 10 | 323.85 | 337.34 | 16.67 | 31.75 | 5.36 |
| RX57 | 12 | – | 12 | – | 381.00 | 391.72 | 11.91 | 25.40 | 26.40 |
| RX63 | – | – | – | 14 | 419.10 | 441.72 | 26.99 | 50.80 | 6.63 |
| RX65 | 16 | – | – | – | 469.90 | 480.62 | 11.91 | 25.40 | 9.39 |
| RX66 | – | – | 16 | – | 469.90 | 483.39 | 16.67 | 31.75 | 7.52 |
| RX69 | 18 | – | – | – | 533.40 | 544.12 | 11.91 | 25.40 | 20.14 |
| RX70 | – | – | 18 | – | 533.40 | 550.07 | 19.84 | 41.28 | 11.63 |
| RX73 | 20 | – | – | – | 584.20 | 596.11 | 13.49 | 31.75 | 22.10 |
| RX74 | – | – | 20 | – | 584.20 | 600.87 | 19.84 | 41.28 | 0.790 |
| RX82 | – | 1 | – | – | 57.15 | 67.87 | 11.91 | 25.40 | 0.880 |
| RX84 | – | 1 1／2 | – | – | 63.50 | 74.22 | 11.91 | 25.40 | 0.880 |
| RX85 | – | 2 | – | – | 79.38 | 90.09 | 13.49 | 25.40 | 1.79 |
| RX86 | – | 2 1／2 | – | – | 90.49 | 103.58 | 15.08 | 28.58 | 1.98 |
| RX87 | – | 3 | – | – | 100.03 | 113.11 | 15.08 | 28.58 | 3.22 |
| RX88 | – | 4 | – | – | 123.83 | 139.29 | 17.46 | 31.75 | 2.98 |
| RX89 | – | 3 1／2 | – | – | 114.30 | 129.78 | 18.26 | 31.75 | 6.82 |
| RX90 | – | 5 | – | – | 155.58 | 174.63 | 19.84 | 44.45 | 17.10 |
| RX91 | – | 10 | – | – | 260.35 | 286.94 | 30.18 | 45.24 | 3.31 |
| RX99 | 8(2) | – | 8(2) | – | 234.95 | 245.67 | 11.91 | 25.40 | – |
| RX201 | – | – | – | 1 3／8 | 46.04 | 51.46 | 5.74 | 11.30 | – |
| RX205 | – | – | – | 1 13／16 | 57.15 | 62.31 | 5.56 | 11.10 | – |
| RX210 | – | – | – | 2 9／16 | 88.90 | 97.63 | 9.53 | 19.05 | – |
| RX215 | – | – | – | 4 1／16 | 130.18 | 140.89 | 11.91 | 25.40 | – |