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 6110-00-205-1778
NSN 5945-01-089-9800
NSN 5990-01-100-1840
NSN 5920-01-414-2393
NSN 5925-01-448-8147
NSN 6240-01-100-4158
NSN 5975-01-029-4176
NSN 6685-01-436-6635
NSN 6220-00-973-9416
NSN 5935-01-425-6133
NSN 2925-00-610-9344
NSN 5975-00-394-2545