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Technical Data Sheet

Product Description

This product is a viscous assembly lubricant for components and equipment designed to use Skydrol aviation hydraulic fluids. Approved by airframe manufacturers, MCS 352B lubricates seals during assembly, preventing them from being damaged. It introduces no foreign material into the hydraulic system because it contains no silicone oils or any petroleum based products.

This product is only supplied through distributors. North America region inquiries can be directed to TBM and Europe region inquiries to Boeing Distribution Services. Both distributors are authorized to repackage and distribute MCS-352B within their respective regions. Refer to the distributor listing on for their contact information.

Typical Properties

PropertyTypical Value, Units
Acid Number0.2 max.
AppearanceViscous, purple liquid
Solubility5% by volume in Skydrol at 24°C, complete, no haze
Specific Gravity 
     @ 25°C/25°C1.02
     @ 210°F190-225 cSt

Industry Approvals
 Boeing BAC-5001-6, BAC5506
 Douglas DACO-DPM5073

Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.

Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.

5/26/2021 2:14:16 PM