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STYLE RX

RX ring joint gaskets are a pressure-energized modification of the standard style R ring joint gasket.  RX gaskets are designed to fit the same flange grooves as a standard style R. 

Tolerances: (Inches) 
 
A* Width of Ring +/- 0.008,-0.000
H* Height of Ring +/- 0.008,-0.000
OD Outside Diameter of Ring +/- 0.020,-0.000
23° (Angle) +/- 1/2°

Draft

 

* A plus tolerance of 0.008 inches for width ‘A’ and height ‘H’ is permitted provided the variation in width or height does not exceed 0.004 inches throughout its entire circumference.

Note: The pressure passage hole illustrated in the RX Ring Cross section is in Rings RX82 through RX91 only. Center line of hole shall be located at mid point of dimension ‘C’ ( width of flat). 

 

* API allows more liberal tolerances on RX 201–215


Ring No. Pressure Class Ratings Pitch Diameter of Ring Outside Diameter of Ring Width of Ring Height of Ring Weight lbs
2000 3000 5000
Nominal Pipe Size P OD A H
RX20 - - - 2.688 3.000 0.344 0.750 0.527
RX20 - - 2 1/16 2.688 3.000 0.344 0.750 0.527
RX23 2 1/16 - - 3.250 3.672 0.469 1.000 1.150
RX24 - 2 1/16 2 1/16 3.750 4.172 0.469 1.000 1.330
RX25 - - 3 1/8 4.000 4.313 0.344 0.750 1.420
RX26 2 9/16 - - 4.000 4.406 0.469 1.000 1.500
RX27 - 2 9/16 2 9/16 4.250 4.656 0.469 1.000 1.730
RX31 3 1/8 3 1/8 - 4.875 5.297 0.469 1.000 1.910
RX35 - - 3 1/8 5.375 5.797 0.469 1.000 2.090
RX37 4 1/16 4 1/16 - 5.875 6.297 0.469 1.000 2.270
RX39 - - 4 1/16 6.375 6.797 0.469 1.000 2.540
RX41 - - - 7.125 7.547 0.469 1.000 2.720
RX44 - - - 7.625 8.047 0.469 1.000 2.960
RX45 7 1/16 7 1/16 - 8.313 8.734 0.469 1.000 3.660
RX46 - - 7 1/16 8.313 8.750 0.531 1.125 8.560
RX47 - - - 9.000 9.656 0.781 1.625 3.790
RX49 9 9 - 10.625 11.047 0.469 1.000 5.360
RX50 - - 9 10.625 11.156 0.656 1.250 4.560
RX53 11 11 - 12.750 13.172 0.469 1.000 6.450
RX54 - - 11 12.750 13.281 0.656 1.250 5.360
RX57 13 5/8 13 5/8 - 15.000 15.422 0.469 1.000 26.400
RX63 - - - 16.500 17.391 1.063 2.000 6.630
RX65 16 3/4 - - 18.500 18.922 0.469 1.000 9.390
RX66 - 16 3/4 - 18.500 50.031 0.656 1.250 7.520
RX69 - - - 21.000 21.422 0.469 1.000 20.140
RX70 - - - 21.000 21.656 0.781 1.625 11.630
RX73 21 1/4 - - 23.000 23.469 0.531 1.250 22.100
RX74 - 20 3/4 - 23.000 23.656 0.781 1.625 0.790
RX82 - - - 2.250 2.672 0.469 1.000 0.880
RX84 - - - 2.500 2.922 0.469 1.000 0.880
RX85 - - - 3.125 3.547 0.531 1.000 1.790
RX86 - - - 3.563 4.078 0.594 1.125 1.980
RX87 - - - 3.938 4.453 0.594 1.125 3.220
RX88 - - - 4.875 5.484 0.688 1.250 2.980
RX89 - - - 4.500 5.109 0.719 1.250 6.820
RX90 - - - 6.125 6.875 0.781 1.750 17.100
RX91 - - - 10.250 11.297 1.188 1.781 3.310
RX99 - - - 9.250 9.672 0.469 1.000 -
RX201* - - 1 3/8 1.813 2.026 0.226 0.445 -
RX205* - - 1 13/16 2.250 2.453 0.219 0.437 -
RX210* - - 2 9/16 3.500 3.844 0.375 0.750 -
RX215* - - 4 1/16 5.125 5.547 0.469 1.000 -
RX215* - - 4 1/16 x 4 1/4 5.125 5.547 0.469 1.000 -