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 5910-00-579-7752
NSN 6110-01-529-2592
NSN 6130-01-415-2870
NSN 6620-01-467-2111
NSN 4140-01-163-8796
NSN 5960-00-386-8215
NSN 7035-01-131-1168
NSN 6240-01-387-7178
NSN 6135-01-606-8244
NSN 5960-00-151-7576
NSN 6620-00-269-5168
NSN 5960-01-456-1735