SSI 811R, 812R OVAL, OCTAGONAL RING JOINT

SSI 811R, 812R OVAL, OCTAGONAL RING JOINT

TYPE R RING GASKET DIMENSIONS AND TOLERANCES (CONT’D)

GENERAL NOTES
(a) All dimensions are in millimeters.
(b) Tolerances :
      P = average pitch diameter of ring, ±0.18
      A = width of ring, ±0.2      B, H = height of ring, +1.3, -0.5
            Variation in height throughout the entire circumference of any given ring
            shall not exceed 0.5 within these tolerances.

     C = width of flat on octagonal ring, ±0.2
     R1 = radius in ring, ±0.5
     23 deg = angle, ±0 deg 30 min
(c) End flanges to API 6D and API 600 use gaskets for equivalent pipe size under
     ASME B16.5 or ASME B16.47 series A.
       (c-1) Class 720, 960, and 10000 flanges to API 6B are obsolete. Data are for
                information only.
        (c-2) R-30 is for lapped jonit only.

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