| CENTER HOLE DIAMETER | 3.956 INCHES MINIMUM AND 4.012 INCHES MAXIMUM |
| CROSS-SECTIONAL HEIGHT | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | ZZ-R-765 CLASS 2B, GRADE 70 FED SPEC 1ST MATERIAL RESPONSE AND LP-389A MFR REF 2ND MATERIAL RESPONSE |
| MATERIAL | RUBBER SILICONE CLASS Q AND PLASTIC POLYTETRAFLUOROETHYLENE |