| MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE BOTTOM RING |
| RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM INTERMEDIATE RING |
| PLASTIC POLYTETRAFLUOROETHYLENE TOP RING |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM D1418 ASSN STD SINGLE MATERIAL RESPONSE INTERMEDIATE RING |
| CROSS-SECTIONAL SHAPE STYLE | SQUARE/RECTANGULAR BOTTOM RING |
| SPECIAL INTERMEDIATE RING |
| SQUARE/RECTANGULAR TOP RING |
| INTERMEDIATE RING QUANTITY | 1 |
| OUTSIDE DIAMETER | 12.001 INCHES MINIMUM AND |
| 12.005 INCHES MAXIMUM |
| INSIDE DIAMETER | 11.521 INCHES MINIMUM AND |
| 11.524 INCHES MAXIMUM |
| HEIGHT | 0.480 INCHES MINIMUM AND |
| 0.481 INCHES MAXIMUM |
| SPECIAL FEATURES | GLAND WIDTH 0.375 |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | T-RING DIMENSION FOR 0.275 CROSS-SECTION (PISTON TYPE) |