HR-7748
Description
HR-7748
HRC 7748 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.
Application Advantages
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
Specifications
SAE AMS 3323 CLASS 1
Availability
Sheet goods 36″ x 36″
Ranging from .125″ to 1″ thicknesses
Typical Physical Properties
| Property | Test Method | Value |
| 25% Compression Deflection | ATMD D1056 | 2 – 9 psi |
| 50% Compression Set | ASTM D1056 | 25% |
| (22 hrs @ +212°F) | ||
| Density (max.) | ASTM D1056 | 0.03% |
| Fluid Resistance | ASTM D471 (Fuel B) | Weight change 0-50% |
| Temperature Resistance (continuous) | -85°F to +400°F |
