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 5950-01-357-0248
NSN 6135-01-010-0891
NSN 6320-01-516-3836
NSN 5905-01-449-0369
NSN 5950-00-489-7743
NSN 6150-00-889-7326
NSN 5930-01-605-4476
NSN 5999-01-298-6494
NSN 5935-00-009-4454
NSN 6135-01-205-5965
NSN 5930-00-841-8928
NSN 7035-01-633-9537