| APERTURE DIAMETER | 93.0 MILLIMETERS NOMINAL |
| CONSTRUCTION | SOLID |
| CROSS SECTION OUTSIDE DIAMETER | 107.0 MILLIMETERS NOMINAL |
| CROSS SECTION INSIDE DIAMETER | 93.0 MILLIMETERS NOMINAL |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| CROSS-SECTIONAL HEIGHT | 107.0 MILLIMETERS NOMINAL |
| CROSS-SECTIONAL WIDTH | 9.5 MILLIMETERS NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM D2475, CLASS 26R3 ASSN STD SINGLE MATERIAL RESPONSE OR SAE J314 NUMBER F-7 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | WOOL AND COTTON OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | FELT SEAL |
| PROPRIETARY CHARACTERISTICS | PACS |
| STYLE DESIGNATOR | CIRCULAR |