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 6240-01-606-9998
NSN 6135-00-932-3136
NSN 4140-00-449-1356
NSN 5920-01-252-8660
NSN 5999-00-004-1932
NSN 6645-01-034-6037
NSN 6240-01-460-3868
NSN 6220-00-866-9884
NSN 5895-01-102-8690
NSN 6110-00-239-9248
NSN 5985-00-948-2858
NSN 6685-00-702-5498