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 4140-00-256-1471
NSN 5975-01-417-8807
NSN 6240-01-022-9148
NSN 4140-00-468-3499
NSN 5855-01-119-9575
NSN 6135-01-226-4071
NSN 5985-00-522-5495
NSN 5855-01-236-4497
NSN 5950-01-437-2334
NSN 5999-01-032-4340
NSN 5985-01-348-1280
NSN 5945-01-040-6408