Ring Type Joint (RTJ) Gasket Weight Chart

Ring Type Joint Gasket Weight Chart – Dimensions & Mass Reference

Our Ring Type Joint (RTJ) Gasket Weight Chart provides accurate weight data for standard RTJ gaskets used in high-pressure and high-temperature flange connections. This reference chart helps engineers, procurement managers, and pipeline designers quickly determine the approximate weight of RTJ gaskets based on size, pressure rating, and ring type.

RTJ gaskets are widely used in oil & gas, petrochemical, offshore, refinery, and power generation industries, where reliable sealing performance under extreme conditions is critical.

RTJ Gasket Types Covered in the Weight Chart

The RTJ gasket weight chart typically includes:

  • R Type (Oval and Octagonal) – For ASME B16.5 and B16.47 flanges

  • RX Type – Pressure-energized design for API 6A flanges

  • BX Type – High-pressure subsea and wellhead applications

Each gasket type has specific dimensional tolerances and weight variations depending on:

  • Nominal Pipe Size (NPS)

  • Pressure Class (150 – 2500)

  • Ring Number (R11, R24, RX35, BX152, etc.)

 

Type R Oval and Octagonal Ring Type Joint Gaskets -In accordance ASME B16.20 / API 6A*

ASME B16.5 FLANGES / ASME B16.20 API 6B FLANGES / API 6A (psi) PCD WIDTH RING HEIGHT WEIGHT
RING NO 150 300-600 900 1500 2500 2000 3000 5000 10000 (mm) (mm) OVAL (mm) OCT (mm) (kg)
R11 1/2″ 34.14 6.35 11.2 9.7 0.05
R12 1/2″ 1/2″ 39.7 7.95 14.2 12.7 0.1
R13 3/4″ 1/2″ 42.88 7.95 14.2 12.7 0.1
R14 3/4″ 3/4″ 44.45 7.95 14.2 12.7 0.11
R15 1″ 47.63 7.95 14.2 12.7 0.12
R16 1″ 1″ 1″ 3/4″ 1″ 1″ 1″ 50.8 7.95 14.2 12.7 0.12
R17 1.1/4″ 57.15 7.95 14.2 12.7 0.14
R18 1.1/4″ 1.1/4″ 1.1/4″ 1″ 1.1/4″ 1.1/4″ 1.1/4″ 60.33 7.95 14.2 12.7 0.15
R19 1.1/2″ 65.1 7.95 14.2 12.7 0.16
R20* 1.1/2″ 1.1/2″ 1.1/2″ 1.1/2″ 1.1/2″ 1.1/2″ 68.28 7.95 14.2 12.7 0.17
R21 1.1/4″ 72.24 11.13 17.5 16 0.3
R22 2″ 82.55 7.95 14.2 12.7 0.2
R23* 2″ 1.1/2″ 2.1/16″ 82.55 11.13 17.5 16 0.34
R24* 2″ 2″ 2.1/16″ 2.1/16″ 95.25 11.13 17.5 16 0.39
R25 2.1/2″ 101.6 7.95 14.2 12.7 0.25
R26* 2.1/2″ 2″ 2.9/16″ 101.6 11.13 17.5 16 0.42
R27 2.1/2″ 2.1/2″ 2.9/16″ 2.9/19″ 107.95 11.13 17.5 16 0.45
R28 2.1/2″ 111.13 12.7 19.1 17.5 0.57
R29 3″ 114.3 7.95 14.2 12.7 0.28
R30 3″ 117.48 11.13 17.5 16 0.48
R31* 3″ 3″ 3.1/8″ 3.1/8″ 123.83 11.13 17.5 16 0.51
R32 3 127 12.7 19.1 17.5 0.65
R33 3.1/2″ 131.78 7.95 14.2 12.7 0.32
R34 3.1/2″ 131.78 11.13 17.5 16 0.54
R35* 3″ 3.1/8″ 136.53 11.13 17.5 16 0.56
R36 4″ 149.23 7.95 14.2 12.7 0.37
R37* 4″ 4″ 4.1/16″ 4.1/16″ 3.1/2″ 149.23 11.13 17.5 16 0.62
R38 4″ 157.18 15.88 22.4 20.6 1.16
R39* 4″ 4.1/16″ 161.93 11.13 17.5 16 0.67
R40 5″ 171.45 7.95 14.2 12.7 0.42
R41 5″ 5″ 5.1/8″ 5.1/8″ 180.98 11.13 17.5 16 0.75
R42 5 190.5 19.05 25.4 23.9 1.91
R43 6″ 193.68 7.95 14.3 12.7 0.48
R44* 5″ 5.1/8″ 193.68 11.13 17.5 16 0.8
R45* 6″ 6″ 7.1/16″ 7.1/16″ 211.15 11.13 17.5 16 0.87
R46* 6″ 7.1/16″ 211.15 12.7 19.05 17.5 1.08
R47* 6″ 228.6 19.05 25.4 23.9 2.3
R48 8″ 247.65 7.95 14.3 12.7 0.61
R49* 8″ 8″ 9″ 9″ 269.88 11.13 17.5 16 1.11
R50* 8″ 9″ 269.88 15.88 22.22 20.6 1.99
R51 8″ 279.4 22.23 28.6 26.9 3.69
R52 10″ 304.8 7.95 14.3 12.7 0.75
R53* 10″ 10″ 11″ 11″ 323.85 11.13 17.5 16 1.34
R54* 10″ 11″ 323.85 15.88 22.22 20.6 2.39
R55 10″ 342.9 28.58 36.51 35.1 7.68
R56 12″ 381 7.95 14.3 12.7 0.93
R57 12″ 12″ 13.5/8″ 13.5/8″ 381 11.13 17.5 16 1.57
R58 12″ 381 22.23 28.6 26.9 5.03
R59 14″ 396.88 7.95 14.5 12.7 0.98
R60 12″ 406.4 31.75 39.7 38.1 11.09
R61 14″ 14″ 14″ 419.1 11.13 17.5 16 1.73
R62 14″ 419.1 15.88 22.22 20.6 3.09
R63* 14″ 419.1 25.4 33.33 31.8 7.54
R64 16″ 454.03 7.95 14.2 12.7 1.12
R65* 16″ 16.3/4″ 16.3/4″ 469.9 11.13 17.5 16 1.89
R66* 16″ 469.9 15.88 22.4 20.6 3.4
R67 16″ 469.9 28.58 36.6 35.1 10.53
R68 18″ 517.53 7.95 14.2 12.7 1.28
R69* 18″ 18″ 533.4 11.13 17.5 16 2.2
R70* 18″ 18″ 533.4 19.05 25.4 23.9 5.35
R71 18″ 533.4 28.58 36.6 35.1 11.95
R72 20″ 558.8 7.95 14.2 12.7 1.38
R73* 20″ 20.3/4″ 584.2 12.7 19.1 17.5 2.99
RING NO 150 300-600 900 1500 2500 2000 3000 5000 10000 (mm) (mm) OVAL (mm) OCT (mm) (kg)
R74* 20″ 20.3/4″ 584.2 19.05 25.4 23.9 5.85
R75 20″ 584.2 31.75 39.6 38.1 15.94
R76 24″ 673.1 7.95 14.2 12.7 1.66
R77 24″ 692.15 15.88 22.4 20.6 5.11
R78 24″ 692.15 25.4 33.3 31.8 12.46
R79 24″ 692.15 34.93 44.5 41.4 22.58
R80 22″ 615.95 7.95 14.29 12.7 1.59
R81 22″ 635 14.3 20.64 19.1 4.05
R82* 1″ 57.15 11.13 17.46 16 0.23
R84* 1.1/2″ 63.5 11.13 17.46 16 0.25
R85* 2″ 79.38 12.7 19.05 17.5 0.4
R86* 2.1/2″ 90.5 15.88 22.22 20.6 0.65
R87* 3″ 100.03 15.88 22.22 20.6 0.72
R88* 4″ 123.83 19.05 25.4 23.9 1.22
R89* 3.1/2″ 114.3 19.05 25.4 23.9 1.13
R90* 5″ 155.58 22.23 28.58 26.9 2.05
R91* 10″ 260.35 31.75 39.68 38.1 7.1
R92 228.6 11.13 17.5 16 0.94
R93 26″ 749.3 19.05 25.4 23.9 7.4
R94 28″ 800.1 19.05 25.4 23.9 7.9
R95 30″ 857.25 19.05 25.4 23.9 8.47
R96 32″ 914.4 22.23 28.58 26.9 12.08
R97 34″ 965.2 22.23 28.58 26.9 12.75
R98 36″ 1022.35 22.23 28.58 26.9 13.51
R99* 8″ 8″ 234.95 11.13 17.46 16 0.95
R100 26″ 749.3 28.58 36.51 35.1 16.79
R101 28″ 800.1 31.75 39.68 38.1 21.83
R102 30″ 857.25 31.75 39.68 38.1 23.39
R103 32″ 914.4 31.75 39.68 38.1 24.95
R104 34″ 965.2 34.93 44.45 41.4 31.49
R105 36″ 1022.35 34.93 44.45 41.4 33.35

BX Ring Type Joint Gaskets – In accordance ASME B16.20 / API 6A

API 6B FLANGES / API 6A (psi) OD HEIGHT WIDTH HOLE SIZE WEIGHT
RING NO 2000 3000 5000 10000 15000 20000 (mm) (mm) (mm) (mm) (kg)
BX150 1.11/16″ 1.11/16″ 72.19 9.3 9.3 1.5 0.134
BX151 1.13/16″ 1.13/16″ 1.13/16″ 76.4 9.63 9.63 1.5 0.153
BX152 2.1/16″ 2.1/16″ 2.1/16″ 84.68 10.24 10.24 1.5 0.193
BX153 2.9/16″ 2.9/16″ 2.9/16″ 100.94 11.38 11.38 1.5 0.287
BX154 3.1/16″ 3.1/16″ 3.1/16″ 116.84 12.4 12.4 1.5 0.398
BX155 4.1/16″ 4.1/16″ 4.1/16″ 147.96 14.22 14.22 1.5 0.555
BX156 7.1/16″ 7.1/16″ 7.1/16″ 237.92 18.62 18.62 3 1.882
BX157 9″ 9″ 9″ 294.46 20.98 20.98 3 2.977
BX158 11″ 11″ 11″ 352.04 23.14 23.14 3 4.364
BX159 13.5/8″ 13.5/8″ 13.5/8″ 426.72 25.7 25.7 3 6.55
BX160 13.5/8″ 402.59 23.83 13.74 3 3.068
BX161 16.3/4″ 491.41 28.07 16.21 3 5.35
BX162 16.3/4″ 16.3/4″ 475.49 14.22 14.22 1.5 1.99
BX163 18.3/4″ 556.16 30.1 17.37 3 6.534
BX164 18.3/4″ 18.3/4″ 570.56 30.1 24.59 3 9.545
BX165 21.1/4″ 624.71 32.03 18.49 3 8.76
BX166 21.1/4″ 640.03 32.03 26.14 3 12.82
BX167 26.3/4″ 759.36 35.86 13.11 1.5 8.53
BX168 26.3/4″ 765.25 35.86 16.05 1.5 11.14
BX169 5.1/8″ 173.51 15.85 12.93 1.5 0.73
BX170 6.5/8″ 6.5/8″ 218.03 14.22 14.22 1.5 1.03
BX171 8.9/16″ 8.9/16″ 267.44 14.22 14.22 1.5 1.24
BX172 11.5/32″ 11.5/32″ 333.07 14.22 14.22 1.5 1.56
BX303 30″ 30″ 852.75 37.95 16.97 1.5
Also available SBX RTJ gaskets to API 17D for Subsea Applications.

RX Ring Type Joint Gaskets – In accordance ASME B16.20 / API 6A

API 6B FLANGES / API 6A (psi)    OD HEIGHT WIDTH HOLE SIZE WEIGHT
RING NO 2000 2900 3000 5000 (mm) (mm) (mm) (mm) (kg)
RX20 1.1/2″ 1.1/2″ 1.1/2″ 76.2 19.05 8.4 0.24
RX23 2.1/16″ 93.27 25.4 11.91 0.52
RX24 2.1/16″ 2.1/16″ 105.97 25.4 11.91 0.6
RX25 3.1/8″ 109.55 19.05 8.74 0.65
RX26 2.1/2″ – 2.9/16″ 111.91 25.4 11.91 0.68
RX27 2.1/2″ – 2.9/16″ 2.1/2″ – 2.9/16″ 118.26 25.4 119.91 0.68
RX31 3″ – 3.1/8″ 3″ – 3.1/8″ 134.54 25.4 11.91 0.78
RX35 3″ – 3.1/8″ 147.24 25.4 11.91 0.86
RX37 4″ – 4.1/16″ 4″ – 4.1/16″ 159.94 25.4 11.91 0.95
RX39 4″ – 4.1/16″ 172.64 25.4 11.91 1.03
RX41 5″ – 5.1/8″ 5″ – 5.1/8″ 191.69 25.4 11.91 1.15
RX44 5″ – 5.1/8″ 204.39 25.4 11.91 1.23
RX45 6″ – 7.1/16″ 6″ – 7.1/16″ 221.84 25.4 11.91 1.34
RX46 6″-7 1.1/16″ 222.25 28.58 13.49 1.66
RX47 8″ 245.26 41.28 19.84 3.88
RX49 8″ – 9″ 8″ – 9″ 280.59 25.4 11.91 1.72
RX50 8″ – 9″ 283.36 31.75 16.66 2.43
RX53 10″ – 11″ 10″ – 11″ 334.57 25.4 11.91 2.06
RX54 10″ – 11″ 337.34 31.75 16.66 2.92
RX57 12″ – 13 5/8″ 12″ – 13 5/8″ 391.72 25.4 11.91 2.42
RX63 14″ 441.73 50.8 27 11.96
RX65 16″ – 16 3/4″ 480.62 25.4 11.91 3
RX66 16″ – 16.3/4″ 457.99 31.75 16.66 4.26
RX69 18″ 544.12 25.4 11.91 3.41
RX70 18″ 550.06 41.28 19.84 9.15
RX73 20″ – 21.1/4″ 596.11 31.75 13.49 5.27
RX74 20″ – 20.3/4″ 600.86 41.28 19.84 10.01
RX82 1″ 67.87 25.4 11.91 1.5 0.36
RX84 1.1/2″ 74.22 25.4 11.91 1.5 0.4
RX85 2″ 90.09 25.4 13.49 1.5 0.4
RX86 2.1/2″ 103.58 28.58 15.09 2.3 0.81
RX87 3″ 113.11 28.58 15.09 2.3 0.9
RX88 4″ 139.29 31.75 17.48 3 1.46
RX89 3.1/2″ 129.77 31.75 18.26 3 3.1
RX90 5″ 174.63 44.45 19.84 3 7.75
RX91 10″ 286.94 45.24 30.18 3 1.5
RX99 8″ 8″ 245.67 25.4 11.91 2.2
RX201 1.3/8″ 51.46 11.3 5.74 0.1
RX205 1.13/16″ 62.31 11.1 5.56 0.13
RX210 2.9/16″ 97.64 19.05 9.53 0.35
RX215 4.1/16″ 140.89 25.4 11.91 0.8
Also available SRX RTJ gasket for Subsea Applications.

IX Ring Joint Gaskets for Compact Flanges


In accordance Norsok L-005.

NOMINAL SIZE   SEAL RING ID            OD Height WEIGHT
DN NPS   IX SIZE (mm) (mm) (mm) (kg)
15 1/2″   IX15 22.2 30.2 10 0.02
20 3/4″   IX20 27.2 35.2 10 0.03
25 1″   IX25 34.2 42.2 10 0.03
40 1.1/2″   IX40 49.3 58.2 10.6 0.05
50 2″   IX50 61.3 71.1 11.8 0.08
65 2.1/2″   IX65 74.4 85 13 0.12
80 3″   IX80 89.5 101 14.2 0.17
100 4″   IX100 115.7 128.8 16.2 0.28
125 5″   IX125 142 156.8 17.9 0.42
150 6″   IX150 170.2 186.7 19.6 0.62
200 8″   IX200 220.5 238.5 22.4 0.99
250 10″   IX250 274.9 298.4 25.2 1.85
300 12″   IX300 325 347.4 27.1 2.18
350 14″   IX350 357.1 380.3 28.5 2.6
400 16″   IX400 409.3 434.3 30.5 3.43
450 18″   IX450 459.4 486.2 32.3 4.38
500 20″   IX500 511.6 539.2 34.1 5.27
550 22″   IX550 561.7 591.2 35.7 6.48
600 24″   IX600 611.9 642.2 37.3 7.55
650 26″   IX650 664 695.2 38.8 8.74
700 28″   IX700 714.1 747.2 40.2 10.4
750 30″   IX750 766.3 800.2 41.7 11.8
800 32″   IX800 816.4 851.2 43 13.3
850 34″   IX850 866.6 902.2 44.3 14.8
900 36″   IX900 918.7 956.2 45.6 17.1
950 38″   IX950 968.8 1007.2 46.9 18.9
1000 40″   IX1000 1021 1060.2 48.1 20.9
1050 42″   IX1050 1071.1 1111.3 49.3 23
1100 44″   IX1100 1121.3 1162.3 50.4 25.1
1150 46″   IX1150 1173.4 1215.3 51.6 27.5
1200 48″   IX1200 1223.6 1266.3 52.7 29.9