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 6320-01-021-6633
NSN 6220-00-067-7645
NSN 5855-00-361-0167
NSN 6105-01-376-5021
NSN 5945-01-307-9828
NSN 5835-01-303-6563
NSN 6240-01-104-5693
NSN 5855-01-575-1268
NSN 6220-00-166-9796
NSN 5975-00-172-5594
NSN 6645-00-363-9775
NSN 5910-01-205-3436