7748 - Closed Cell Fluorosilicone Sponge Sheets - Compression Deflection, 2-9
DESCRIPTION
BELLOFOAM™ 7748 from Bellofram Silicones is a lightweight, closed-cell fluorosilicone sponge material, developed to meet the SAE AMS 3323 specification. The sheets are designed for use in aircraft and aerospace industries, where gaskets are subjected to extremely harsh environments involving various chemicals, fuels, and a wide variety of temperature extremes. This material has passed all requirements for exposure to jet fuel per the ASTM D 471 Fuel B specification. Product is available in 36 square inch (914.4 square millimeter) sheets, ranging in thickness from 0.125" to 1.000" (3.175 to 25.4 mm).
Contact us at siliconesRFQ@bellofram.com to request a free product sample or quotation.
FEATURES
- Lightweight
- Resistance to temperature extremes
- Excellent gasket material
- Low closure force
- Very low compression set
- Ultraviolet ray (UV) resistant
- Ozone resistant
- Non-conductive insulating material; Fuel resistance
MATERIAL SPECIFICATIONS
- AMS 3323
- SAE AMS 3323 CLASS 1
- ASTM D 6576 GRADE A SOFT
- ASTM D 6576 GRADE B SOFT
TYPICAL PHYSICAL PROPERITIES
| PROPERTY | TEST METHOD | SPECIFICATION |
|---|---|---|
| Class Designation | SAE-AMS-3323 | Class 1 |
| Compression Deflection | ASTM D-1056 | 2 to 9 PSI |
| Compression Set (22 Hours @ +212°F/+100°C) | ASTM D-1056 | 25% Max |
| Density (max.) | ASTM D-1056 | 43 lbs/ft 3 |
| Fluid Resistance (Fuel B) | ASTM D-471 | Weight Change: Max 0 to 50% |
| Temperature Range(°F) | -85° to +400°F |
Data noted above is based on laboratory tests and should be used as a reference only. Further information and additional specifications are available upon request. Tests, claims, representations, and descriptions regarding flammability are based on standard laboratory tests, and they may not be reliable for determining, evaluating, predicting, or describing the flammability or burning characteristics under actual fire conditions, whenever used alone or in combination with other products. Accordingly, each potential user should make an individual determination whether the flammability or burning characteristics of the product are suitable for the purpose intended by the user.