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 5985-00-443-5095
NSN 5975-00-401-5365
NSN 5925-00-760-0475
NSN 4140-01-603-0535
NSN 6610-00-292-9895
NSN 6110-00-812-7373
NSN 5895-01-629-7818
NSN 5925-01-014-7991
NSN 5835-01-424-4577
NSN 5996-01-228-8466
NSN 5998-01-247-7006
NSN 5950-00-025-6372