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 5855-01-122-9418
NSN 5920-01-246-0464
NSN 5855-00-760-3870
NSN 5945-01-556-3304
NSN 5999-01-640-6529
NSN 5945-01-263-5642
NSN 5996-01-483-2847
NSN 5990-01-548-3711
NSN 5960-01-010-7392
NSN 5920-00-243-3788
NSN 6685-01-026-0111
NSN 6105-01-422-1336