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 5990-01-571-7468
NSN 5985-01-274-7936
NSN 6150-01-614-9671
NSN 5925-01-046-0614
NSN 6685-01-108-5782
NSN 6240-01-212-9756
NSN 5985-00-983-4751
NSN 4140-01-519-3349
NSN 6620-01-111-9064
NSN 6130-01-042-8201
NSN 2925-01-308-9809
NSN 6150-01-446-1640