| CROSS-SECTIONAL SHAPE STYLE | SPECIAL INTERMEDIATE RING | 
| CROSS-SECTIONAL SHAPE STYLE | SQUARE/RECTANGULAR BOTTOM RING | 
| CROSS-SECTIONAL SHAPE STYLE | SQUARE/RECTANGULAR TOP RING | 
| HEIGHT | 0.297 INCHES NOMINAL | 
| INSIDE DIAMETER | 0.810 INCHES NOMINAL | 
| MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE  AND GLASS FIBER  AND DISULFIDE MOLYBDENUM BOTTOM RING | 
| MATERIAL | PLASTIC POLYTETRAFLUOROETHYLENE  AND GLASS FIBER  AND DISULFIDE MOLYBDENUM TOP RING | 
| MATERIAL | RUBBER SYNTHETIC INTERMEDIATE RING | 
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SEAL-RING ASSEMBLY, THREE PIECE, PISTON AND ROD | 
| OUTSIDE DIAMETER | 1.070 INCHES NOMINAL | 
| TEMP RATING | -54.0 CELSIUS AND 135.0 CELSIUS |