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 5990-01-199-4832
NSN 6110-00-669-6726
NSN 6645-01-549-8910
NSN 5925-01-242-7456
NSN 5835-01-532-9373
NSN 6220-01-426-3170
NSN 5985-01-605-1198
NSN 5905-00-139-2620
NSN 5996-00-901-0519
NSN 5835-00-814-1359
NSN 5965-01-162-8689
NSN 5910-01-064-4442