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 5895-01-020-8990
NSN 6110-00-068-4518
NSN 5895-00-399-5693
NSN 6645-01-421-6909
NSN 6650-01-503-5419
NSN 5998-01-367-6359
NSN 5925-00-964-9654
NSN 6145-01-093-0383
NSN 6220-01-123-1353
NSN 5965-01-411-9933
NSN 6145-00-159-7743
NSN 5935-01-569-0816