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 5905-01-170-3453
NSN 6610-01-426-5090
NSN 5965-01-406-4164
NSN 5965-01-063-2051
NSN 6685-00-679-9965
NSN 5960-00-099-9790
NSN 2925-01-269-3861
NSN 6110-01-156-0708
NSN 6685-01-364-9782
NSN 5999-01-425-5546
NSN 6105-01-121-0520
NSN 5996-00-229-7037