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 6645-01-302-6243
NSN 5920-01-630-9082
NSN 5996-00-167-5554
NSN 6610-01-281-7536
NSN 5930-01-100-0384
NSN 4140-01-056-4453
NSN 5925-01-401-5314
NSN 5930-01-442-7809
NSN 5925-00-249-1287
NSN 5998-01-275-6133
NSN 5998-00-841-2147
NSN 5998-01-551-1735