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 5925-01-340-1185
NSN 6685-01-155-9389
NSN 5945-01-154-5987
NSN 5905-01-111-9094
NSN 5855-01-088-8700
NSN 6620-01-652-4349
NSN 4140-00-226-9807
NSN 5996-01-344-2160
NSN 6650-01-331-5243
NSN 6130-00-184-3758
NSN 5855-01-492-9795
NSN 6610-00-594-6372