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 6105-01-041-8698
NSN 5925-01-517-2402
NSN 6110-01-242-3914
NSN 6320-00-977-3930
NSN 5930-00-280-2562
NSN 6150-01-373-5616
NSN 6220-01-398-4903
NSN 5910-00-840-5193
NSN 5996-01-260-1502
NSN 6685-01-506-1151
NSN 2925-01-327-3069
NSN 5905-01-592-0681