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 5935-00-489-5431
NSN 7035-01-432-2424
NSN 6610-00-915-3215
NSN 5999-01-330-6154
NSN 6220-01-020-8018
NSN 5985-01-602-6904
NSN 6220-00-502-3149
NSN 5945-01-356-5736
NSN 5905-01-022-8966
NSN 4140-01-534-9987
NSN 6685-01-401-5360
NSN 5930-00-901-5683