| 
                            
                                |  |  
                                |   |  
		                        | National Stock Number:
 4310-01-566-7570
 
 Federal Supply Class:
 4310
 
 National Item Identification Number:
 015667570
 
 Description:
 RING,PISTON
 
 Detail:
 A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes PACKING, PREFORMED; RETAINER, OIL SEAL; RETAINER, PACKING; RING, RETAINING; RING WIPER; and SEAL RING, METAL.
 |  
		                        | 
 Manufacturer Information:
 
 | B90-113 | 1EEN6 | DUCHESNE, INC. | 
 |  
					            | 
 Techincal Specification:
 
 | PART NAME ASSIGNED BY CONTROLLING AGENCY | 2ND STAGE PISTON RING SEAT | 
 |  |