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 5855-00-446-5921
NSN 5975-01-552-7936
NSN 5999-00-515-2442
NSN 6110-01-512-3857
NSN 7035-01-649-0424
NSN 6610-01-444-8881
NSN 5905-01-082-2729
NSN 6145-01-367-1404
NSN 5935-01-128-3803
NSN 5990-00-920-2894
NSN 5960-00-776-5509
NSN 5905-01-054-1218