MIL-R-46089 Silicone Sheeting & Uncured Compounds
ElastaPro’s ESS11MM closed cell medium density silicone sponge meets the requirements of AMS3195. This military silicone is Made in USA under an AS9100D / ISO 9001:2015 quality system.
What is MIL-R-46089?
- MIL-R-46089 is a former U.S. military specification for closed-cell sponge rubber. It was superseded by MIL-R-46089B, which was later superseded by ASTM D1056.
- Although it is obsolete for new designs, MIL-R-46089 is still referenced on older part drawings.
- MIL-R-46089 silicones are used in military and aerospace applications requiring extreme temperature resistance with good compression.
- Materials are classified by grades, forms, sheet sizes, and sheet thicknesses.
Grades
- M – Medium grade
- F – Firm grade
Forms
- S – Sheets
- MP – Molded Parts
- EP – Extruded Parts
Sheet Sizes
- Code 1 – 12” x 12”
- Code 2 – 24” x 24”
- Code 3 – 36” x 36”
Sheet Thicknesses
| Code | Inches | Grade |
|---|---|---|
| A | 0.0625 | F |
| B | 0.125 | F |
| C | 0.1875 | M or F |
| D | 0.25 | M or F |
| E | 0.3125 | M or F |
| F | 0.375 | M or F |
| G | 0.5 | M or F |
Closed Cell Silicone Foam for Military Applications
Closed cell silicone foam offers advantages like superior moisture resistance excellent thermal insulation, high durability, and resistance to extreme temperatures. These properties make it ideal for applications requiring a waterproof, airtight barrier, such as sealing, gasketing, and high-performance insulation.
It also adds structural rigidity and is flame-resistant, though it is generally denser, less flexible, and more expensive than open-cell foam. Applications for this military silicone include aerodynamic gaskets and weather tight rain seals on aircraft and missiles.
Ask ElastaPro for MIL-R-46089 Silicone Rubber
ElastaPro produces this specification grade silicone at our Made in USA manufacturing facility, and in accordance with our ISO 9001:2105 and AS9100D certified Quality Management System (QMS). Contact us to request a quote, or for more information.