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 5935-01-577-0054
NSN 5996-00-788-2885
NSN 5935-01-047-6445
NSN 6130-00-222-5291
NSN 5996-01-197-7005
NSN 2925-00-764-0167
NSN 5950-01-515-1947
NSN 5975-01-610-5142
NSN 5920-01-586-8097
NSN 5910-01-204-3322
NSN 5835-00-019-1816
NSN 6130-01-496-8532