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 5925-00-087-2819
NSN 6105-01-475-8569
NSN 5835-00-785-7921
NSN 6220-00-689-8114
NSN 5999-01-089-5429
NSN 5945-00-539-0144
NSN 6135-00-962-4110
NSN 5925-01-209-1825
NSN 5990-00-964-9672
NSN 5998-00-100-0491
NSN 6130-01-284-5414
NSN 6645-01-226-9825