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 2925-01-068-3844
NSN 4140-01-346-3948
NSN 6645-01-110-1334
NSN 5960-00-757-0126
NSN 6610-00-080-0185
NSN 5930-01-161-0756
NSN 5945-00-071-8086
NSN 5990-01-443-2931
NSN 6685-00-582-6941
NSN 6610-01-149-9749
NSN 6150-01-239-0570
NSN 6620-00-449-1973