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 5965-01-438-0647
NSN 6110-01-381-0300
NSN 5975-01-382-7394
NSN 6135-00-798-1425
NSN 5945-01-222-5303
NSN 6145-01-385-0079
NSN 6110-01-336-6212
NSN 5855-00-149-0766
NSN 6135-00-900-2139
NSN 6110-01-173-6221
NSN 5990-00-993-3130
NSN 5905-00-853-6739