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 5985-01-216-2923
NSN 5895-01-317-1192
NSN 2925-00-947-3181
NSN 5985-01-608-5857
NSN 6135-01-214-6441
NSN 5998-01-509-6663
NSN 6110-00-224-6128
NSN 5950-01-013-4181
NSN 5945-01-067-0023
NSN 5975-01-188-7460
NSN 6135-01-265-1384
NSN 5925-01-301-6698