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 4140-01-608-0199
NSN 5985-00-513-3420
NSN 6150-01-361-2228
NSN 5945-01-036-9087
NSN 6320-01-652-3806
NSN 2925-01-581-7478
NSN 5960-01-237-2336
NSN 5990-00-675-4569
NSN 4140-01-132-9450
NSN 5855-01-061-6890
NSN 6610-01-335-3185
NSN 5895-01-522-7626