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 5910-01-281-2882
NSN 6610-01-112-8137
NSN 5920-01-123-9358
NSN 6110-01-133-6506
NSN 2925-01-500-0730
NSN 5975-00-082-0894
NSN 4140-01-394-6268
NSN 5999-00-880-0865
NSN 4140-00-079-8453
NSN 6620-00-992-8436
NSN 2925-01-233-8545
NSN 4140-01-191-1247