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 5998-01-312-7528
NSN 2925-01-462-1620
NSN 5975-01-653-3102
NSN 6650-00-026-5296
NSN 5975-00-625-8155
NSN 5930-01-440-9959
NSN 5925-01-071-3158
NSN 2925-00-707-6770
NSN 5990-01-529-7307
NSN 2925-00-549-6759
NSN 6645-00-519-1026
NSN 5960-01-027-1835