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 5960-01-411-5217
NSN 7035-00-079-7189
NSN 6645-00-544-8529
NSN 5945-01-364-9321
NSN 5950-01-460-9799
NSN 5920-01-573-4469
NSN 6650-01-584-5440
NSN 5990-01-299-2014
NSN 5985-01-088-1465
NSN 6145-00-856-9327
NSN 5905-00-696-0308
NSN 5905-00-989-9749