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 5835-00-986-5985
NSN 4140-01-295-8264
NSN 6135-01-490-7704
NSN 5835-01-067-9271
NSN 5990-00-251-0965
NSN 5930-01-281-4165
NSN 5895-01-416-3983
NSN 5855-00-408-2611
NSN 5975-01-487-4221
NSN 6620-01-578-7561
NSN 5945-01-597-1077
NSN 5945-00-581-9875