| APERTURE LENGTH | 3.000 INCHES NOMINAL |
| APERTURE WIDTH | 1.000 INCHES NOMINAL |
| BOLT HOLE QUANTITY | 6 |
| CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG WIDTH | 2.160 INCHES NOMINAL ALL HOLES |
| CENTER TO CENTER DISTANCE BETWEEN BOLT HOLES ALONG LENGTH | 1.820 INCHES NOMINAL ALL HOLES |
| CROSS-SECTIONAL SHAPE STYLE | SOLID SINGLE OR COMPOSITION |
| CROSS-SECTIONAL THICKNESS | 0.062 INCHES NOMINAL |
| HOLE DIAMETER | 0.129 INCHES NOMINAL ALL HOLES |
| MATERIAL | RUBBER CHLOROPRENE CLASS CR OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | GASKET-OBSERVATION WINDOW |
| PROPRIETARY CHARACTERISTICS | PACS |
| OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG WIDTH | 0.180 INCHES NOMINAL |
| OUTSIDE EDGE TO INSIDE EDGE SMALLEST DISTANCE ALONG LENGTH | 0.500 INCHES NOMINAL |
| OUTSIDE EDGE TO INSIDE EDGE SMALLEST DISTANCE ALONG WIDTH | 0.750 INCHES NOMINAL |
| OUTSIDE EDGE TO BOLT HOLE CENTER DISTANCE ALONG LENGTH | 0.170 INCHES NOMINAL |
| OVERALL LENGTH | 4.000 INCHES NOMINAL |
| OVERALL WIDTH | 2.500 INCHES NOMINAL |
| STYLE DESIGNATOR | NON-CIRCULAR |