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 5910-01-545-0280
NSN 5855-01-383-8339
NSN 6610-01-441-8364
NSN 5920-00-452-0963
NSN 5930-01-157-2793
NSN 6620-01-422-7012
NSN 6685-01-440-8749
NSN 6320-01-123-6814
NSN 6650-01-147-7135
NSN 5985-00-233-4626
NSN 6135-00-377-9165
NSN 5895-00-138-6835