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 6145-00-170-5274
NSN 5930-00-947-2507
NSN 5905-01-392-7844
NSN 5999-00-259-8820
NSN 6220-01-494-4776
NSN 7035-00-312-3055
NSN 6145-01-312-2265
NSN 6620-01-014-7192
NSN 5925-01-537-0409
NSN 6645-00-086-9346
NSN 6610-00-420-8475
NSN 6645-01-447-6777