occupational exposure limit (OEL)
Occupational Safety and Health Act of 1970
OCS - see outer continental shelf
octane number
odorant
odorless solvents
odor panel
OEL - see occupational exposure limit
OEM (Original Equipment Manufactuer)
oil analysis oil content of petroleum wax
oil analysis
oil dilution
oil drain interval
oiler
oiliness agent
oil mist lubrication
oil shale
olefin
olefin oligomer
once-though lubrication
OPEC (Organization of Petroleum Exporting Countries)
open cup - see Cleveland open cup
open gear
orchard spray oil
organic compound
Organization of Petroleum Exporting Countries - see OPEC
organosol - see plastisols and organosols
OSHA Hazard Communication Standard - see Hazard Communication Standard
OSHA (Occupational Safety and Health Admistration) - see Occupational Safety and Health Act of 1970
otto cycle
outer continental shelf
overhead
oxidation
oxidation inhibitor
oxidation stability
oxidized asphalt
oxygenate
ozone
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