O-RING SELECTION GUIDE
April 2015
Material
Type/
Hardness
Temp.
°F
70
NBR
Nitrile
80
H20
BPS B101,
H30
Viton®
FEPM
Aflas®
FFKM
Chemraz3
FFKM
250
300
75
BPS B201,
V35
275
90
BPS B201,
V40
400
95
BPS B201,
V45
90
BPS
B201,
A40
90
90
BPS
B301,
K20
90
BPS 402,
B40
PSI
Oil
Chloride
Base
Brine
Completion Completion
Bromide
pH> 10
Amine
Completion Completion Inhibitor
Decomp.
Resistant
Solvents
15 K w/PE10
10 K w/ T20
15 K w/PE10
100 ppm
< 175°F
OK
OK
NO
NO
OK
< 175°F
OK
6 hours
OK
OK
NO
NO
OK
< 225°F
OK
4 hours
< 250°F
OK
OK
OK
NO
OK
< 200 °F
OK
24 hours
< 300°F
OK
OK
OK
to 400F
OK
OK
OK
4 hours
< 300°F
OK
OK
OK
OK
OK
NO
OK
OK
OK
OK
OK
OK
OK
OK
OK
NO
OK
OK
OK
OK
10 K w/ T20
10 K w/ T20
325
BPS
B301,
C40
H2S
15 K w/PE10
H40
BPS B701,
HNBR40
Kalrez3
EPDM
225
90
FKM
Press.2
10 K w/ T20
BPS B101,
BPS B101,
90
HNBR
Hydrog.
Nitrile
Environmental Compatability
Temp. &
Pressure
w/ B.U.1
1%
<
200°F
15 K w/PE10
10 K w/ T20
15 K w/PE10
450
10 K w/ T20
to 450
15 K w/PE10
15 %
<300°F
5%
> 300°F
20%
<300°F
7%
>300°F
20%
<350°F
15 K w/PE10
7%
to 500
to 500°F
20%
350 15 K w/PE10
<350°F
7%
to 500 15 K w/PE10
to 500°F
350
to 550 15 K w/PE10
100 ppm
NO
NOTE # 1 These recommendations are for long term static applications. Exposure of a few days allow higher temperatures or pressures. Dynamic use will lower
temperature /pressure capability. For any material used near its upper temperature rating, temperature cycling capability will be reduced.
NOTE #2 Pressure ratings for o-rings with back ups are dependent on type of back up material used and gaps sealed. T20 is Glass Filled
Teflon® and PE10 is Glass Filled PEEK. Ratings for O-Rings w/o back-up are related directly to Equipment tested pressure and temperature ratings.
NOTE #3 Some grades of Perfluoroelastomers, Chemraz, Kalrez and other brands, can seal better at low temperatures. High temp. versions will not seal as well at
low temperatures.
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