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 2925-01-446-6523
NSN 6240-01-417-3656
NSN 5960-01-036-3839
NSN 5965-00-342-5126
NSN 6135-01-400-2947
NSN 5895-01-477-7386
NSN 5975-01-286-7578
NSN 6220-01-358-7468
NSN 5985-00-974-9961
NSN 6240-00-204-9355
NSN 5835-00-446-2944
NSN 6685-01-017-8538