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 6685-00-618-3519
NSN 5985-01-370-4757
NSN 5999-01-061-2062
NSN 6105-01-614-5342
NSN 6685-01-090-1119
NSN 5998-01-537-2811
NSN 6105-00-443-8245
NSN 5910-01-415-3669
NSN 5910-01-416-0348
NSN 5915-00-735-7986
NSN 5999-00-985-4946
NSN 5920-01-411-7033