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 6645-00-149-1100
NSN 5960-00-584-4553
NSN 6135-01-465-8061
NSN 6240-01-131-9580
NSN 6685-00-069-2451
NSN 5905-01-467-9025
NSN 6645-01-248-8033
NSN 5998-01-514-7741
NSN 6650-00-071-0612
NSN 6135-00-062-5080
NSN 7035-00-135-4758
NSN 5985-00-454-2372