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 6220-01-400-4203
NSN 5950-01-460-3207
NSN 5945-01-205-0000
NSN 6685-00-987-4472
NSN 5975-00-535-3939
NSN 6150-01-200-7935
NSN 5905-01-046-7429
NSN 6610-01-611-7884
NSN 6620-01-083-4672
NSN 5960-00-597-2680
NSN 6650-01-414-9784
NSN 5950-01-413-8755