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 6145-01-451-4599
NSN 6650-00-069-3107
NSN 5965-00-504-3779
NSN 5920-00-529-0618
NSN 6105-01-209-9153
NSN 7035-01-386-3004
NSN 5996-00-358-1899
NSN 5996-01-629-4123
NSN 5990-00-827-6212
NSN 5910-01-263-3951
NSN 5920-01-540-8043
NSN 6645-00-253-9617