(R) Rubber: Fluorocarbon (FKM) High Temperature - Fluid Resistant Low Compression Set/70 to 80 Type A Hardness For Seals in Fuel Systems and Specific Engine Oil Systems
|Publication Date:||1 May 2020|
This specification covers a fluorocarbon rubber in the form of molded rings, compression seals, O-ring cord, and moldedin- place gaskets for aeronautical and aerospace applications. For sheet, strip, tubing, extrusions, and molded shapes use AMS3216 specification which is intended for that use.
This material has resistance to a wide variety of fuels, lubricants, and specific hydraulic fluids, but usage is not limited to such applications. Each application should be considered individually. This class of fluoroelastomers may not be suitable for use in some high temperature stabilized, "HTS," engine oils. Each "HTS" oil should be evaluated separately. Examples of "HTS" oils are those oils conforming to MIL-PRF-23699 Class HTS, MIL-PRF-7808 Grade 4, and AS5780 Class HPC. This material has a typical service temperature range of -20 to 400 °F (-29 to 204 °C). The service temperature range of the material is a general temperature range, but the presence of particular fluids and specific design requirements may modify this range. It is the responsibility of the user to determine that this specification is appropriate for the environments (temperature range, fluids exposure, etc.) in which it is sought to be used.
Order of Precedence
Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. This specification is in addition to and in no way limiting, superseding, or abrogating any contractual obligation as required by the applicable procurement document. In the event of conflict in requirements, the order of precedence shall be:
1. All statutory and regulatory requirements (excluding this document).
2. Procurement Document or Contractual Agreement.
2. Applicable purchaser's drawing or AS3208 or AS3209 or MA3352 Parts Standard, as applicable.
3. Specification referenced on the drawing.
4. This document.
5. All specifications referenced in this document.
Safety - Hazardous Materials
While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.