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 5910-01-587-1303
NSN 7035-00-225-6499
NSN 6130-00-428-3787
NSN 6150-01-256-4987
NSN 5965-00-043-0897
NSN 5990-01-389-1196
NSN 6150-01-631-5666
NSN 6145-01-474-5459
NSN 6685-01-265-8724
NSN 5985-01-624-5324
NSN 6320-00-313-9114
NSN 5950-01-170-3477