A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6610-00-146-2269
NSN 5855-01-324-3756
NSN 4140-01-348-9029
NSN 2925-00-536-4574
NSN 5998-00-686-2152
NSN 5950-01-336-4732
NSN 5960-00-275-2990
NSN 5935-01-377-4311
NSN 5855-01-462-5150
NSN 5935-00-068-9957
NSN 6220-01-102-8110
NSN 6240-01-054-2289