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 5945-00-237-1836
NSN 5945-00-051-9672
NSN 6145-01-013-7171
NSN 6645-00-166-7926
NSN 5910-01-152-2051
NSN 5920-01-218-5742
NSN 5990-01-041-4351
NSN 5998-01-502-8423
NSN 5950-01-623-9952
NSN 5975-00-814-6844
NSN 5998-01-253-0381
NSN 6130-01-504-4344