STS Industrial - Bolts & Screws

 

RTJ RING GASKETS

RTJ Ring Gaskets are solid metal gaskets designed and manufactured in accordance with the specifications outlined in API 6A and ASME B16.20. RTJ, or Ring Type Joint gaskets fit flanges designed to accept this type of gasket, which require specially grooved faces. These gaskets can withstand extreme pressures. RTJ ring gaskets are available in a wide array of materials and cross-sectional profiles. It is always recommended that the gasket material be softer than that of the flanges.

RTJ Ring Gaskets

 

  • R Series RTJ Ring Gasket

    R-Series RTJ Ring Gasket

    The R-Type RTJ ring gasket is available in two different profiles, having an oval or octagonal cross-section. Both types have identical pitch diameter as the intended flange. These gaskets are used in applications with pressures up to 5,000 PSI. The oval type is the only gasket that will fit a bottom-radiused groove. Flanges with flat bottom v-grooves will accept either style.

    RX Series RTJ Ring Gasket

    RX-Series RTJ Ring Gasket

    RX RTJ ring gaskets are designed for applications with pressures up to 5,000 PSI. They are interchangeable with R-Oval or R-Octagonal rings used on API 6B flanges. RX-type RTJ gaskets perform excellent in 6B flanged blowout preventer stacks, requiring the additional mass of the RX gasket to support the higher pressures, with both higher vibrations and heavier weights of these units.

    BX Series RTJ Ring Gasket

    BX-Series RTJ Ring Gasket

    The BX Series RTJ ring gasket can only be used with 6BX flanges and 16BX hubs. BX Gaskets are designed for higher-pressure applications starting at pressure ratings of 5,000 PSI. and ending with 20,000 PSI. Pitch diameters on BX gaskets are slightly larger than the pitch diameter of the intended flange. This forces the gasket to initially seal on its outside angles, and secondly, seal with its inside angles as the flange is bolted down to the recommended torque.

    SRX and SBX Series RTJ Ring Gasket

    SRX and SBX Series Subsea RTJ Ring Gasket

    SRX and SBX series RTJ ring gaskets are American Petroleum standardized underwater rings. The SRX type gasket will fit in a flange intended for an RX gasket. Similarly, an SBX gasket will fit into a BX flange. The “S” prefix identifies a gasket as having intersecting vent holes, allowing a pressure-less metal-to-metal initial contact between the gasket and flange groove, while made up underwater.

    • R SERIES

      RTJ Size

      150

      3/600

      900

      1500

      2500

      2000

      3000

      5000

      R-11 1/2
      R-12 1/2 1/2
      R-13 3/4 1/2
      R-14 3/4 3/4
      R-15 1
      R-16 1 1 1 3/4
      R-17 1 1/4
      R-18 1 1/4 1 1/4 1 1/4 1
      R-19 1 1/2
      R-20 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2

      150

      3/600

      900

      1500

      2500

      2000

      3000

      5000

      R-21 1 1/4
      R-22 2
      R-23 2 1 1/2 2
      R-24 2 2 2 2
      R-25 2 1/2
      R-26 2 1/2 2 2 1/2
      R-27 2 1/2 2 1/2 2 1/2 2 1/2
      R-28 2 1/2
      R-29 3
      R-30 3

      150

      3/600

      900

      1500

      2500

      2000

      3000

      5000

      R-31 3 3 3 3
      R-32 3
      R-33 3 1/2
      R-34 3 1/2
      R-35 3 3
      R-36 4
      R-37 4 4 4 4
      R-38 4
      R-39 4 4
      R-40 5

      150

      3/600

      900

      1500

      2500

      2000

      3000

      5000

      R-41 5 5 5 5
      R-42 5
      R-43 6
      R-44 5 5
      R-45 6 6 6 6
      R-46 6 6
      R-47 6
      R-48 8
      R-49 8 8 8 8
      R-50 8 8

      150

      3/600

      900

      1500

      2500

      2000

      3000

      5000

      R-51 8
      R-52 10
      R-53 10 10 10 10
      R-54 10 10
      R-55 10
      R-56 12
      R-57 12 12 12 12
      R-58 12
      R-59 14
      R-60 12

      150

      3/600

      900

      1500

      2500

      2000

      3000

      5000

      R-61 14
      R-62 14
      R-63 14
      R-64 16
      R-65 16 16
      R-66 16 16
      R-67 16
      R-68 18
      R-69 18 18
      R-70 18 18

      150

      3/600

      900

      1500

      2500

      2000

      3000

      5000

      R-71 18
      R-72 20
      R-73 20 20
      R-74 20 20
      R-75 20 18
      R-76 24
      R-77 24
      R-78 24
      R-79 24
      R-80 22

      150

      3/600

      900

      1500

      2500

      2000

      3000

      5000

      R-81 22
      R-82
      R-83
      R-84
      R-85
      R-86
      R-87
      R-88
      R-89
      R-90

      150

      3/600

      900

      1500

      2500

      2000

      3000

      5000

      R-91
      R-92
      R-93 26
      R-94 28
      R-95 30
      R-96 32
      R-97 34
      R-98 36
      R-99
      R-100 26

      150

      3/600

      900

      1500

      2500

      2000

      3000

      5000

      R-101 28
      R-102 30
      R-103 32
      R-104 34
      R-105 36
    • RX SERIES

      RTJ Size

      720

      960

      2000

      2900

      3000

      5000

      RX-20 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2
      RX-23 2 2 2
      RX-24 2 2
      RX-25 3
      RX-26 2 1/2 2 1/2 2 1/2
      RX-27 2 1/2 2 1/2
      RX-31 3 3 3 3
      RX-35 3
      RX-37 4 4 4 4
      RX-39 4

      720

      960

      2000

      2900

      3000

      5000

      RX-41 5 5 5 5
      RX-44 5
      RX-45 6 6 6 6
      RX-46 6
      RX-47 8
      RX-49 8 8 8 8
      RX-50 8
      RX-53 10 10 10 10
      RX-54 10
      RX-57 12 12 12 12

      720

      960

      2000

      2900

      3000

      5000

      RX-63 14
      RX-65 16 16 16
      RX-66
      RX-69 18 18 18 16
      RX-70
      RX-73 20 20 20 18
      RX-74
      RX-82 1 20
      RX-84 1 1/2
      RX-85 2

      720

      960

      2000

      2900

      3000

      5000

      RX-86 2 1/2
      RX-87 3
      RX-88 4
      RX-89 3 1/2
      RX-90 5
      RX-91 10
      RX-99 8 8 8 8
      RX-201 1 3/8
      RX-205 1 13/16
      RX-210 2 9/16

      720

      960

      2000

      2900

      3000

      5000

      RX-215 4 1/16
      RX-215 4 1/16 x 4 1/4
    • BX SERIES

      RTJ SIZE

      5,000

      10,000

      15,000

      20,000

      BX-150 1 11/16 1 11/16
      BX-151 1 13/16 1 13/16 1 13/16
      BX-152 2 1/16 2 1/16 2 1/16
      BX-153 2 9/16 2 9/16 2 9/16
      BX-154 3 1/16 3 1/16 3 1/16
      BX-155 4 1/16 4 1/16 4 1/16
      BX-156 7 1/16 7 1/16 7 1/16
      BX-157 9 9
      BX-158 11 11
      BX-159 13 5/8

      5,000

      10,000

      15,000

      20,000

      BX-160 13 5/8
      BX-161 16 3/4
      BX-162 16 3/4 16 3/4
      BX-163 18 3/4
      BX-164 18 3/4
      BX-165 21 1/4
      BX-166 21 1/4
      BX-167 26 3/4*
      BX-168 26 3/4**
      BX-169 5 1/8

      5,000

      10,000

      15,000

      20,000

      BX-171
      BX-172
      BX-303

      *At 2000 PSI. **At 3000 PSI.

    • SRX / SBX SERIES

      The pressure class ratings for the SRX-Series gasket is the same as the RX-Series gasket as listed above.

      The pressure class ratings for the SBX-Series gasket is the same as the BX-Series gasket as listed above.

  • COMMON RTJ MATERIALS

    RTJ Ring Gaskets can be manufactured from many materials. Below is a list of some of the more common materials.

    MATERIAL

    UNS NUMBER

    MAXIMUM HARDNESS

    BRINELL

    ROCKWELL B

    Soft Iron 90 56
    Low Carbon Steel 120 68
    4-6% Chrome 0.5% Moly K42544 130 72
    304 Stainless Steel S30400 160 83
    316 Stainless Steel S31600 160 83
    347 Stainless Steel S34700 160 83
    410 Stainless Steel S41000 170 86
    Titanium Grade 2 S50400
    Alloy 600 N06600 200
    Alloy 625 N06625 200
    Alloy 800 N08800 200
    Alloy 825 N08825 160
    Hastelloy N10001 200
    Alloy C276 N10276 200
    Super Duplex N31803

    Brinell Hardness measured with a 3000 kg load, except soft iron which is measured with a 500 kg load. Rockwell measured with a 100 kg load and 1/16″ diameter ball.

Sources: Wolar Industrial Inc. www.wolar.com, ASME B16.20

Note: All material included on this page is informational only, and should not be used as one’s sole source for design purposes. STS Industrial, Inc. and its affiliates do not guarantee the accuracy of the information on this site, and retain no liability for the use or misuse of the information contained on this site.