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Royco 81MS Grease

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Overview

RoycoŽ 81MS is a high temperature semi-fluid lubricant formulated with microfine molybdenum disulfide and a thermally stable polysiloxane based synthetic oil. This gray-black mixture may be applied via a paint brush, squirt can, or pressure applicator. The microfine particles of "Moly" adhere to and penetrate metal surfaces, thereby providing lubrication and anti-seize protection on threaded parts at temperatures up to 1400 °F even when the oil component is removed. RoycoŽ 81MS is designed for use on slow speed sliding metal on metal surfaces operating at temperatures up to 750 °F.

Features

  • Excellent oxidation and corrosion inhibition
  • Reduces equipment wear
  • Available in 1.75 lb. can

Specifications

  • Appearance: Paste
  • Physical state: Solid
  • Odor: Odorless
  • Flash point: > 572 °F
  • Relative density: > 1
  • Density: 1 g/cm3 at 68 °F
  • Meets all requirements of DOD-L-25681

Benefits

  • Wide operating temperature
  • Prevents threaded parts from seizing at high temperatures

  • LIMITATIONS
  • Due to the nature of the product, it is advisable to stir or shake thoroughly before application. The persistence of molybdenum disulfide and the high penetrating properties of synthetic base oil make this material difficult to remove from surfaces. The material may also stain yellow metals a darker color.

  • ROYCO 81MS should not be used on anti-friction bearings under any circumstances.

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Please note, Aircraft Spruce Canada's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Canada assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.