5.9 Button Type remote seal (S26BN)
This remote seal is designed to connect to a process via the NPT threaded connection or to match pipe fitting with an interface
suitable for the provided mating flange. The button seals, thanks to their accurate design, are projected to carry out accurate
measurements with medium/high calibrated span (2 MPa - 20 bar - 290 psi approx or greater).
The button type remote seal is to be used only for gauge pressure.
This type of connection is especially suitable for plastic and resins production processes.
For any other detailed information regarding S26BN seals such as pressure limits, vacuum service recommendations, process
temperature limits, temperature effects and configuration, please refer to product datasheet.
2.3 (3.32)
Thick Gasket
Ø 24 (15/16)
13.49 (17/32)
6.35 (1/4)
76 (3)
19 (3/4)
146 (5-3/4)
Ø 23 (59/64)
1-1/2 16N-2 for Type 92
1-1/2 16N-2 for Type 92 modified
25 (1)
128 (5-1/32)
212 (8-11/32) max
Ø 35 (1-3/8)
Ø 24 (15/16)
6.35 (1/4)
2.3 (3/32) thick gasket
13.49 (17/32)
Ø 89 (3-1/2)
4 Holes equally spaced
Ø 17/32 in. on Ø 2-1/2 in. bolt circle
2 holes 1/2-13 UNC-2
on Ø 2-1/2 in. bolt circle
Ø 23 (59/64)
Ø 34 (1-23/64)
Flange
Spacer
Figure 23: 3-1/4 in. flange extended – type 91
Figure 24: 3-1/4 in. flange extended – type 91 modified
25 (1)
128 (5-1/32)
212 (8-11/32) max
Ø 35 (1-3/8)
Ø 24 (15/16)
6.35 (1/4)
2.3 (3/32) thick gasket
13.49 (17/32)
Ø 89 (3-1/2)
4 Holes equally spaced
Ø 17/32 in. on Ø 2-1/2 in. bolt circle
2 holes 1/2-13 UNC-2
on Ø 2-1/2 in. bolt circle
Ø 23 (59/64)
Ø 34 (1-23/64)
Flange
Spacer
Figure 25: 1-1/2 in. threaded union type 92 or 92 modified
24 OI/S26-EN Rev. B
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