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Hydraulic Circulating Oils

Hill and Griffith's PREMIER R&O Hydraulic Circulating Oils were specifically designed for all but the most severe high pressure applications, where high oxidation resistance and a maximum amount of water separation is necessitated.

The PREMIER R&O series is formulated with the highest quality base stocks and incorporates both rust and oxidation inhibitors as well as a metal passivator and defoamant additive. These products are ideally suited in circulating systems such as steam turbines and air compressors where maximum demulsibility of water from the oil is required. They do not contain anti-wear additives based on their application.

Product Name: PREMIER R&O 32 PREMIER R&O 46 PREMIER R&O 68
ASTM Grade 150 215 315
Cincinnati Milacron Spec P-38 P-55 P-54
Military Spec Equivalent MIL-H 46001 A MIL-H 46001 A MIL-H 46001 A
API Gravity 31.2 29.8 29.4
Viscosity, SUS @ 100F 162 227 340
Viscosity, SUS @ 210F 44 48 55
Viscosity, cSt @ 40C 31.8 44.4 66.2
Viscosity, cSt @ 100C 5.3 6.5 8.4
Viscosity Index, minimum 95 95 95
Pour Point, degrees F -20 -20 -15
Flash Point, COC-F 400 415 430
Oxidation Stability- >3500 Hours >3500 Hours >3500 Hours

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Hydraulic Fluids and Specialty Industrial Lubricants

Griflube® Hydraulic Fluids biodegradable, flame-resistant and high-pressure hydraulic fluids
Griflube® Slide-Way 68 & 220 Lubricants formulated using severely hydrotreated napthenic base oils and state-of-the-art additives


Metalworking Fluids

Grifcut™ Metalworking Fluids heavy-duty synthetic and semi-synthetic metalworking fluids



Murphy Spray Gun rugged cast iron high-solids, sprayer that can stand up to rough treatment and still provide a reliable pattern.
Pump Up Sprayer 3.5-gallon spray unit, funnel top tank for easy fill and closure


Bulletins and Technical Papers

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Customer Service

Technical Services and Support - On-site casting defect investigations, product testing, machine start-ups and much more. Also, lab facilities are available to provide testing upon request.

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