| APERTURE DIAMETER | 3.188 INCHES NOMINAL3.188 INCHES NOMINAL |
| CROSS-SECTIONAL SHAPE STYLE | METAL WINDING W/ SOFT FILLERMETAL WINDING W/ SOFT FILLER |
| CROSS-SECTIONAL THICKNESS | 0.188 INCHES NOMINAL0.188 INCHES NOMINAL |
| OUTSIDE DIAMETER | 3.938 INCHES NOMINAL3.938 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-16265 CL B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | ASBESTOS AND STEEL OVERALL |
| STYLE DESIGNATOR | CIRCULAR |