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 5945-00-404-2385
NSN 6685-01-643-5432
NSN 2925-01-105-7850
NSN 6620-00-064-4964
NSN 5965-01-578-6260
NSN 5996-01-563-6568
NSN 5945-00-539-3043
NSN 5910-01-613-1210
NSN 5985-01-221-1077
NSN 4140-00-044-1329
NSN 6685-01-485-3110
NSN 6135-01-017-3001