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 5975-01-585-5626
NSN 5965-01-386-2988
NSN 6135-00-782-6988
NSN 4140-01-294-0886
NSN 6645-01-561-7432
NSN 5930-01-608-4314
NSN 6610-00-766-2450
NSN 5998-01-152-3019
NSN 6685-01-547-8896
NSN 6105-01-655-3954
NSN 5975-01-370-3344
NSN 5930-00-138-1394