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 5950-01-041-4871
NSN 5915-01-511-6546
NSN 5945-01-213-3757
NSN 5960-00-672-3836
NSN 5835-01-515-6537
NSN 6610-01-361-8965
NSN 6150-00-294-4117
NSN 5975-00-066-3581
NSN 6240-01-224-6941
NSN 6135-00-896-3187
NSN 5996-01-609-3254
NSN 5985-01-103-2715