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 2925-01-089-4176
NSN 6105-00-943-8327
NSN 5985-01-087-9571
NSN 6145-00-729-9051
NSN 5920-01-464-1093
NSN 6320-01-162-5977
NSN 5990-00-424-1598
NSN 5960-01-213-6292
NSN 5975-01-532-2974
NSN 6645-01-633-1852
NSN 5998-00-181-8488
NSN 5999-01-304-8671