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Royco® 555

Turbine Engine & Helicopter Transmission Oil which meets DOD - PRF - 85734 specifications.




Product Overview

A synthetic-based, 5 cSt turbine engine oil that is formulated for excellent load carrying capacity - making it the premier fluid for use in many helicopter turbines, transmissions and gearboxes.


Gear Boxes; Hydraulics

Product Specifications

Specification: DOD - PRF - 85734

NATO Specification: O-160

Joint Service Designation: OX-26

MIL-SPEC Scope: This specification covers the requirements for one grade of a synthetic base helicopter transmission system lubricating oil.
Primary Chemistry: Ester

Related Products

Royco® Lubricants

Royco® Lubricants include a diverse portfolio of ester, group III mineral oil, and PAO-type lubricant chemistries. These lubricants serve compressors, pumps, service gears, bearings, and chains, are available in many grades and have received military and FAA approval.

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