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 5945-00-140-0385
NSN 5905-01-227-3986
NSN 5960-01-575-7818
NSN 5925-00-456-0651
NSN 5975-01-562-2829
NSN 4140-00-918-7837
NSN 6130-00-711-0528
NSN 5965-00-849-1313
NSN 5950-01-447-0146
NSN 6145-01-158-2125
NSN 5895-00-480-5892
NSN 6610-01-352-6344