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 6220-01-011-0865
NSN 5999-01-441-9732
NSN 6620-00-972-5899
NSN 5996-01-360-5635
NSN 5925-01-494-9267
NSN 5999-01-475-9138
NSN 2925-01-381-5307
NSN 5905-01-650-6922
NSN 5935-01-168-8183
NSN 6320-01-353-9753
NSN 7035-00-003-7518
NSN 5920-00-216-8665