Cirro R&O Oil

Product Description:


Texas Oil Cirro R&O Oils are superior quality rust and oxidation (R&O) inhibited oils providing excellent performance in hydraulic systems, compressors applications including steam and hydro turbine sets and other systems where long lubricant service life is required and other applications where a high quality R&O type oil is required. Their superior oxidation resistance enables extended oil drain intervals, with significantly reduced sludge, varnish and carbon deposits on internal parts, pumps, exhaust valves and other compressor components.

Texas Oil Cirro R&O Oils considerably reduce the necessity of cleaning and other maintenance, provide protection against wear, as well as increase productivity and provide excellent filtration characteristics.


CIRRO R&O OILS have provided excellent performance when used for oil-film back-up roll bearings in hot and cold mills, high speed rod mills, and reduction gears and bearings. Excellent results have also been obtained in Morgan No-Twist rod mills using Grade 100.

They are also recommended for use in other applications which require a long life premium quality fluid such as in turbines, pumps, machine tools, gear drives calling for a non-EP (zinc free) oil, circulating oil systems, oil mist systems, etc.

Key Features :

  • Superior additive package with excellent anti-wear protection.
  • High performance additive system with anti- oxidant, anti-foam agents, rust and corrosion inhibitors.
  • Excellent protection against fluid deterioration with high base oil and additive performance.
  • High resistance to foaming and excellent air release.

Customer Benefits:

  • Exceeds performance requirements for manufacturers’ pump specifications, provides longer life and performance.
  • Provides superior protection against varnishing, rust, and excessive wear while extending equipment life and lowering maintenance costs.
  • Less maintenance and longer life of equipment and lower repair costs.
  • Prevents pump cavitations, noisy and erratic, providing more efficient operation.


CIRRO R&O Oils meets or exceeds most pump manufacturer’s specifications and may be used as a premium hydraulic fluid, compressor oil, and other applications as recommended where superior performance of an R&O type fluid may be needed. These high performance circulating lubricants are designed for applications where long lubricant service life is required.

Specific applications include:

  • Land-based and marine steam turbine, hydro turbine and some gas turbine circulation systems, including pumps, valves and other ancillary equipment.
  • Continuous service in plain and roller bearings and parallel shaft gearing.
  • Turbines with oil supplied by splash, bath, ring oiling or other mechanical means
  • Moderate severity hydraulic pumps.
  • Compressors and vacuum pumps handling air, natural gas, and inert gases, and with discharge temperatures not exceeding 150 C.

Packaging Options:

Drums and Pails

Health and Safety: When used for its intended application, this product is not expected to have any adverse health implications. For complete information on safe handling, as well as physical and chemical characteristics please refer to the Material Safety Data Sheet (MSDS) found on our website,, or call +1 (713) 300-5379 . Do not use this product for purposes other than its intended use. Please be responsible to the environment when disposing of used product.

Cirro R&O Oils / Premium Rust and Oxidization Lubes
Product Number TXO-240 TXO-241 TXO-242 TXO-243 TXO-244 TXO-245 TXO-246 TXO-247 TXO-248 TXO-250 Test Method
ISO Grade 22 32 46 68 100 150 220 320 460 10
API 33.14 32.03 30.83 30.87 30.27 29.5 28.66 27.89 27.2 34.68
Specific Gravity 0.8595 0.8653 0.8717 0.8742 0.8747 0.8789 0.8835 0.8877 0.8916 0.8515
Lbs/Gal 7.158 7.206 7.259 7.28 7.285 7.319 7.358 7.393 7.425 7.091
Density 0.8590 0.8648 0.8712 0.8737 0.8742 0.8784 0.8830 0.8873 0.8911 0.8510
Flash Point, °C 232 241 235 244 260 279 296 312 327 174 ASTM D92
Pour Point, °C -24 -24 -21 -24 -27 -27 -24 -21 -18 -24 ASTM D97
Color, ASTM <1.0 <1.0 <1.0 <1.0 <1.0 <3.5 <4.0 <4.5 <5.0 -0.3 ASTM D1500
Viscosity@100oC, cSt 4.25 5.39 6.72 8.64 11.20 14.7 18.94 24.18 30.56 2.791 ASTM D7042
Viscosity@40oC, cSt 22.26 32.25 46.34 68.02 100.3 150.4 220.5 320.4 460.4 11.92 ASTM D445
Viscosity Index (VI) 91 100 97 98 97 96 96 96 96 65 ASTM D2270

Typical Properties are typical of those obtained with normal production tolerance and do not constitute essentialy a specification. Variations that do not affect product performance are to be expected during normal manufacture and at different blending locations. The information contained herein is subject to change without notice.