(R) Elastomer: Silicone Rubber, (VMQ) General Purpose 75 – 85 Durometer Type ‘A’ Hardness
|Publication Date:||1 April 2019|
This specification covers a silicone (MQ/VMQ) elastomer that can be used to manufacture product in the form of sheet, strip, tubing, extrusions, and molded shapes. This specification should not be used for molded rings, compression seals, Oring cord, and molded in place gaskets for aeronautical and aerospace applications without complete consideration of the end use prior to the selection of this material.
This material type has resistance to deterioration by weathering and petroleum-based lubrication oil, but usage is not limited to such applications. This material type has a typical service temperature range of -85 to +400 °F (-65 to +204 °C) and remains flexible over the temperature range noted. 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. Each application should be considered separately. 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. These products are not normally suitable for use in contact with gasoline or aromatic fuels and low-aniline-point petroleum-based fluids due to excessive swelling of the elastomer.
Order of Precedence
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. Procurement Document or Contractual Agreement and all statutory and regulatory requirements (excluding this document)
2. Applicable purchaser's drawing and/or design data
3. Specifications referenced on the drawing
4. This document
5. All specifications referenced in this document
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 safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.