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 6620-01-544-4857
NSN 6645-01-113-8979
NSN 7035-01-610-3006
NSN 5945-01-498-5749
NSN 5905-00-296-8763
NSN 6685-01-265-2739
NSN 5915-00-470-8882
NSN 5998-00-985-1102
NSN 5950-00-158-8776
NSN 6610-01-067-0228
NSN 5915-01-397-6062
NSN 5930-01-644-1163