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 5975-00-107-4283
NSN 5998-01-548-3331
NSN 5950-01-280-9209
NSN 5950-01-104-9240
NSN 4140-01-086-3436
NSN 5996-01-509-1536
NSN 6105-01-077-8135
NSN 6620-01-552-2889
NSN 6150-01-332-1720
NSN 6135-01-347-0201
NSN 5920-00-459-0741
NSN 6645-00-276-7544