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 5950-01-568-7016
NSN 5975-01-157-2421
NSN 5945-01-592-2115
NSN 6685-00-243-8071
NSN 6110-01-259-0267
NSN 6620-01-461-3550
NSN 6240-00-122-6697
NSN 6685-01-231-8850
NSN 5945-00-788-3269
NSN 5950-00-912-5892
NSN 6610-00-847-8701
NSN 6320-01-476-7702