4300
Catalog
General Technical
T10
Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
Standard O-Rings supplied with Parker tube fittings
and adapters are 90 durometer hard nitrile (Buna-N)
Parker compound #N0552 or similar. These O-Rings are well
suited for most industrial hydraulic and pneumatic
systems. They have high extrusion resistance making them
suitable for very high pressure static applications. Optional
high temperature fluorocarbon, Parker compound #V0894,
is also available for higher temperature specifications.
O-Rings for other than normal hydraulic media or
higher temperature applications can be selected from the
following chart. The chart should be used only as a general
guide. Before making final selection for a given application,
it is recommended that appropriate tests be conducted to
assure compatibility with the fluid, temperature, pressure
and other environmental conditions.
For fluids not shown in the chart, please contact the Tube
Fittings Division.
Polymer
Abbreviated
Name
Parker
Compound
No.
Color
SAE
j515
Type
Hardness
Shore
“
A”7)
Temperature
Range (°F)
Recommended For
Not Recommended
For
Nitrile-Butadiene
NBR
N0552
Black CH 2)
90 6)
-30
° to 250° Petroleum base oils and Phosphate ester base
Nitrile-Butadiene
NBR
N0674
Black
— 70 -30
° to 250° fluids, mineral oils, ethylene hydraulic fluids, auto-
Nitrile-Butadiene
NBR
N0103
Black
— 70 -65
° to 225° glycol base fluids, silicone motive brake fluids,
Nitrile-Butadiene
(
Low compression
set)
NBR
N1059
Black CH 2)
90 -30
° to 275° and di-ester base lubricants, strong acids, ozone,
air, water under 150°F, and freons, ketones, halo-
natural gas.
genated hydrocarbons,
Nitrile-Butadiene
NBR
N0507
Black
— 90 -65
° to 180° Hydrogen fuel cells.
and methanol.
Nitrile-Butadiene
NBR
N0304
Black
— 75 -65
° to 225° Hydrogen fuel cells.
Nitrile-Butadiene
NBR
N0508
Black
—
-35
° to 250° Meets FDA requirements for
food products.
Nitrile-Butadiene
NBR
N0756
Black
— 75 6)
-65
° to 275° CNG Applications
Ethylene-Propylene EPDM E0540
Black
CA 3)
80 -65
° to 275° Phosphate ester base
Petroleum base oils
Ethylene-Propylene EPDM E0893
Purple 1)
CA 3)
80 -65
° to 275° hydraulic fluids, hot water, and di-ester base
steam to 400°F, silicone oils lubricants.
and greases, dilute acids
and alkalis, ketones,
alcohols and automotive
brake fluids.
Ethylene-Propylene EPDM E0962
Black
— 90 -65
° to 275°
CO2 climate control
systems.
Neoprene
CR
C0873
Black
— 70 -45
° to 250° Refrigerants (freons,
Phosphate ester fluids
Neoprene
CR
C0944
Red 1)
— 70 -45
° to 250°
ammonia), high aniline
point
and ketones.
petroleum oils, mild acids,
and silicate ester lubricants.
Fluorocarbon
FKM 5)
V0747
Black
— 75 -15
° to 400° Petroleum base oils and Ketones, skydrol fluids,
or
V0884
Brown 1)
— 75 -15
° to 400° fluids, some phosphate amines (VDMH),
FPM V0894 Brown 1), 5)
HK 4)
90 6)
-15
° to 400° ester base fluids, silicone anhydrous ammonia,
and silicate ester base
low molecular weight
lubricants, di-ester base esters and ethers, and
lubricants, acids and
hot hydrofluoric or
halogenated hydrocarbons. chlorosulfonic acids.
Silicone
Si
S0604
Rust 1)
— 70 -65
° to 450° Dry heat (air to 400°F) and Most petroleum fluids,
high aniline point oils.
ketones, water and
steam.
Table T8 — O-Ring Selection
1)
These Parker “Chromassure” color assurance O-Rings are available from the Parker Hannifin O-Ring Division. They
help eliminate assembly errors, reduce warranty costs and liability risks, and assure safety in aftermarket business.
2)
Formerly SAE Type I.
3)
Formerly SAE Type II.
4)
Formerly SAE Type III.
5) “
FKM” is the ASTM designation for fluorocarbon. Its ISO designation is “FPM”. For “DIN” Fittings, color is green.
6)
Standard compounds available from stock.
7)
Use 90 durometer hard O-Rings for applications with 1500 psi or higher pressures.
O-Ring Material Selection
T
Dimensions and pressures for reference only, subject to change.
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