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 6650-01-082-8962
NSN 4140-01-079-1146
NSN 5925-01-122-8135
NSN 5930-00-203-5594
NSN 5925-00-554-4114
NSN 5996-01-010-3816
NSN 6645-00-067-9517
NSN 6620-00-451-8783
NSN 6105-01-530-2191
NSN 6105-00-216-8866
NSN 5998-00-833-5510
NSN 5950-00-159-9795