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 5895-01-490-0725
NSN 5895-01-192-7492
NSN 5935-00-564-2053
NSN 5945-01-415-8353
NSN 5915-01-271-0007
NSN 5975-01-480-4586
NSN 6150-01-302-2637
NSN 5905-00-513-7167
NSN 6135-01-077-5705
NSN 6685-00-912-6803
NSN 6685-01-028-3156
NSN 6650-00-170-5095