Page 146 - GarlockFluidSealing2010

D-28
! Inner Ring I.D.
" Sealing Element I.D.
# Sealing Element O.D.
$ Centering (Outer) Ring O.D.
Class 75
Large Diameter Weld Neck Flanges
Sealing Element Outer
Size Ring
NPS Inside (B) Outside (C) Outside (D)
Diameter Diameter Diameter
26 26.25 27.00 27.88
28 28.25 29.13 29.88
30 30.25 31.13 31.88
32 32.25 33.13 33.88
34 34.25 35.13 35.88
36 36.25 37.25 38.31
38 38.25 39.31 40.31
40 40.25 41.31 42.31
42 42.25 43.25 44.31
44 44.25 45.50 46.50
46 46.25 47.50 48.50
48 48.38 49.50 50.50
50 50.25 51.50 52.50
52 52.38 53.63 54.63
54 54.38 55.63 56.63
56 56.50 57.88 58.88
58 58.50 59.88 60.88
60 60.50 61.75 62.88
Inner Sealing Element Outer
Size Ring Ring
NPS Inside (A) Inside (B) Outside (C) Outside (D)
Diameter Diameter Diameter Diameter
26 25.75 26.50 27.50 28.56
28 27.75 28.50 29.50 30.56
30 29.75 30.50 31.50 32.56
32 31.75 32.50 33.50 34.69
34 33.75 34.50 35.75 36.81
36 35.75 36.50 37.75 38.88
38 37.75 38.37 39.75 41.13
40 39.75 40.25 41.88 43.13
42 41.75 42.50 43.88 45.13
44 43.75 44.25 45.88 47.13
46 45.75 46.50 48.19 49.44
48 47.75 48.50 50.00 51.44
50 49.75 50.50 52.19 53.44
52 51.75 52.50 54.19 55.44
54 53.75 54.50 56.00 57.63
56 56.00 56.88 58.18 59.63
58 58.19 59.07 60.19 62.19
60 60.44 61.31 62.44 64.19
Class 150 Class 300
Inner Sealing Element Outer
Size Ring Ring
NPS Inside (A) Inside (B) Outside (C) Outside (D)
Diameter Diameter Diameter Diameter
26 25.75 26.50 28.00 30.38
28 27.75 28.50 30.00 32.50
30 29.75 30.50 32.00 34.88
32 31.75 32.50 34.00 37.00
34 33.75 34.50 36.00 39.13
36 35.75 36.50 38.00 41.25
38 38.25 39.75 41.25 43.25
40 40.25 41.75 43.25 45.25
42 42.75 43.75 45.25 47.25
44 44.25 45.75 47.25 49.25
46 46.38 47.88 49.38 51.88
48 48.50 49.75 51.63 53.88
50 49.88 51.88 53.38 55.88
52 51.88 53.88 55.38 57.88
54 53.75 55.25 57.25 60.25
56 56.25 58.25 60.00 62.75
58 58.44 60.44 61.94 65.19
60 61.31 62.56 64.19 67.19
Styles RW, RWI Dimensions
26-60" Series B Flanges
ASME B16.20 Gaskets for
ASME B16.47 Series B Flanges
(API-605)
Notes:
1. Inner rings are required for all PTFE gaskets and for Class 900 gas-
kets, NPS 26 though NPS 48 (see ASME B16.20 code, 3.2.5).
2. The gasket inside diameter tolerance for NPS 26 through NPS 34 is
±0.03"; for NPS 36 through NPS 60 is ±0.05".
3. The gasket outside diameter tolerance for NPS 26 through NPS 60 is
±0.06".
4. The centering ring outside diameter tolerance is ±0.03".
5. There are no Class 900 fanges in NPS 50 and larger.