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4300 Catalog General Technical
U13 Parker Hannifin Corporation
Tube Fittings Division
Columbus, Ohio
http://www.parker.com/tfd
Dimensions and pressures for reference only, subject to change.
O-Ring Material Selection
StandardO-rings suppliedwithParker tube fittings and adapters
are90durometer hardnitrile (Buna-N)Parker compound#N0552.
These O-rings are well suited for most industrial hydraulic and
pneumatic systems.They havehighextrusion resistancemaking
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 hydraulicmedia or higher tempera-
ture applications can be selected from the following chart. The
Table U6 — 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”.
6) Standard compounds available from stock.
7) Use 90 durometer hard O-rings for applications with 1500 psi or higher pressures.
chart should be used only as a general guide. Before making
final selection for a given application, it is recommended that ap-
propriate testsbeconducted toassurecompatibilitywith thefluid,
temperature, pressure and other environmental conditions.
For fluids not shown in the chart, please contact the Tube Fit-
tings Division.
Polymer
Abbreviated
Name
Parker
Compound
No. Color
SAE
J515
Type
Hardness
Shore
"A"7)
Temperature
Range
Recommended
For
Not
Recommended
For
Nitrile-Butadiene NBR N0552 Black CH 2) 906) -30° to 250° F Petroleum base oils and Phosphate ester base
Nitrile-Butadiene NBR N0674 Black – 70 -30° to 250° F fluids, mineral oils, ethylene hydraulic fluids, auto-
Nitrile-Butadiene NBR N0103 Black – 70 -65° to 225° F glycol base fluids, silicone motive brake fluids,
Nitrile-Butadiene NBR N1059 Black CH 2) 90 -30° to 275° F and di-ester base lubricants, strong acids, ozone,
(Low compression air, water under 150°F, and freons, ketones, halo-
set) natural gas. genated hydrocarbons,
Nitrile-Butadiene NBR N0507 Black – 90 -65° to 180° F Hydrogen fuel cells. and methanol.
Nitrile-Butadiene NBR N0 304 Black – 75 -65° to 225° F Hydrogen fuel cells.
Nitrile-Butadiene NBR N0508 Black – 75 -35° to 250° F Meets FDA requirements for
food products.
Nitrile-Butadiene NBR N0756 Black – 756) -65° to 275°F CNG Applications
Ethylene-Propylene EPDM E0540 Black CA 3) 80 -65° to 275° F Phosphate ester base Petroleum base oils
Ethylene-Propylene EPDM E0893 Purple1) CA3) 80 -65° to 275° F 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° F CO2 climate control systems.
Neoprene CR C0873 Black – 70 -45° to 250° F Refrigerants (freons, Phosphate ester fluids
Neoprene CR C0944 Red1) – 70 -45° to 250° F ammonia), high aniline point and ketones.
petroleum oils, mild acids,
and silicate ester lubricants.
Fluorocarbon FKM5) V0747 Black – 75 -15° to 400° F Petroleum base oils and Ketones, skydrol fluids,
or V0884 Brown1) – 75 -15° to 400° F fluids, some phosphate amines (VDMH),
FPM V0894 Brown1) HK4) 906) -15° to 400° F 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 Rust1) – 70 -65° to 450° F Dry heat (air to 400°F) and Most petroleum fluids,
high aniline point oils. ketones, water and
steam.