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 2925-00-456-7627
NSN 5920-01-451-3882
NSN 2925-00-833-9466
NSN 5905-01-173-0106
NSN 6220-01-582-3309
NSN 4140-01-208-7480
NSN 5996-00-105-2841
NSN 5930-00-862-1084
NSN 6610-01-207-0045
NSN 5999-00-155-3088
NSN 6240-01-393-5945
NSN 6145-01-104-5084