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 5990-01-147-5225
NSN 5996-00-118-5944
NSN 5960-01-604-1158
NSN 5835-01-529-3050
NSN 4140-00-790-7995
NSN 5996-00-267-1139
NSN 5960-01-580-6360
NSN 5975-01-205-3769
NSN 7035-00-064-7008
NSN 5945-01-573-1916
NSN 5996-01-452-9489
NSN 5965-00-009-8679