SOR Weatherproof Pressure Switch User Manual
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Form 557 (05.13) ©SOR Inc.
This table lists primary diaphragms and o-rings, both of which are exposed to process
media, and should be checked for compatibility prior to installation.
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O-Ring
(Wetted)
Diaphragm
(Wetted Primary)
Designator
O-Ring
(Wetted)
Diaphragm
(Wetted Primary)
Designator
Viton
Monel
A4
Viton
TCP
Teflon-Coated
Polyimide
N1
Kalrez
A6
Buna-N
N3
Viton
Hastelloy-B
H4
N4
Kalrez
H6
Kalrez
N5
Viton
Hastelloy-C
J4
Kalrez
N6
Kalrez
J6
EPR
TCP
Teflon-Coated
Polyimide
N7
Viton
Carpenter-20
L4
Aflas
N8
Kalrez
L6
Buna-N
Buna-N
P1
Viton GLT
316 L SS
M1
Neoprene
Neoprene
R1
Buna-N
M2
Viton
Viton
S1
Viton
M4
Viton GLT
S2
Neoprene
M5
Buna-N
Tantalum
W2
Kalrez
M7
Viton
W4
Aflas
M8
Neoprene
W5
EPR
M9
Kalrez
W6
EPR
EPR
Y1