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 5975-01-373-6234
NSN 6105-01-139-2822
NSN 5910-01-119-1989
NSN 5895-01-218-0602
NSN 5999-00-430-5770
NSN 5945-01-056-4142
NSN 2925-00-928-5931
NSN 5925-01-144-3137
NSN 5998-00-497-1973
NSN 5925-01-425-5903
NSN 6110-01-400-4207
NSN 6240-00-460-3952