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 5930-01-341-8191
NSN 6145-01-169-3001
NSN 2925-01-213-6622
NSN 5950-00-072-3098
NSN 6610-01-559-5073
NSN 6685-01-384-8452
NSN 6130-01-589-8061
NSN 5990-01-578-5382
NSN 6110-01-554-3934
NSN 6620-01-449-6927
NSN 5960-00-106-6091
NSN 6685-00-768-7633