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 5996-00-098-3864
NSN 5985-00-572-2522
NSN 7035-01-525-8263
NSN 5920-01-564-9262
NSN 4140-00-253-1801
NSN 6130-00-811-3799
NSN 5855-00-879-5849
NSN 5910-00-338-8997
NSN 2925-01-487-0886
NSN 6610-00-052-8020
NSN 4140-00-152-7092
NSN 6135-00-686-4777