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 6645-01-110-4491
NSN 6145-01-259-4144
NSN 5990-01-008-2515
NSN 5910-00-271-7588
NSN 6650-01-323-2141
NSN 5990-01-148-3324
NSN 6130-01-176-0423
NSN 5950-01-622-1616
NSN 5910-00-993-1381
NSN 5835-01-555-8963
NSN 6145-00-019-0047
NSN 7035-01-491-1464