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 5998-01-280-5020
NSN 5895-00-321-0273
NSN 5925-00-142-9991
NSN 6320-01-215-1133
NSN 2925-00-999-3363
NSN 6145-01-146-4106
NSN 5950-01-263-5189
NSN 5999-01-023-0216
NSN 4140-01-419-0198
NSN 5945-01-422-5394
NSN 6610-00-809-0978
NSN 5895-01-111-6481