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 6685-00-061-6255
NSN 6220-01-149-0144
NSN 2925-01-660-0669
NSN 5905-01-606-0311
NSN 6610-01-088-5871
NSN 5960-01-142-1995
NSN 6220-01-476-9371
NSN 5920-01-398-0580
NSN 4140-00-720-4993
NSN 5985-01-387-2938
NSN 6150-00-909-7339
NSN 5975-01-433-9460