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 5998-00-966-1414
NSN 5965-01-516-1236
NSN 2925-01-370-6898
NSN 6135-01-067-8331
NSN 5990-00-915-4531
NSN 6645-00-004-8628
NSN 5895-00-481-5019
NSN 5835-01-158-6878
NSN 6110-01-344-5852
NSN 6135-01-074-8220
NSN 5990-00-339-2084
NSN 6240-01-297-4329