9998 Doerr Lane, Schertz, TX 78154 USA | 210.651.7322

516 S. 25th West Ave.Tulsa, OK 74127 USA | 918.584.2671

– H –

Hydraulic Oil – An oil specially suited for use as a power transmission medium in hydraulically operated equipment.

Hydrodynamic Lubrication – A system of lubrication in which the shape and relative motion of the sliding surfaces causes the formation of a fluid film having sufficient pressure to separate the surfaces.

Hydrotreating – A process which converts and removes undesirable components with the use of a catalyst.

Hypoid Gear Lubricant – A gear lubricant having extreme pressure characteristics for use with hypoid type of gear as in the differential of an automobile.

HVI – High Viscosity Index, typically from 80 to 110 VI units.

Royal Agricultural Lubricant Guide 2020

Enter your email to download our free Agricultural Lubricant Guide


Newsletter sign up

Contact Us

Performance Grease Guide

Enter your email to download our free performance grease guide