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 6130-00-924-6238
NSN 5975-01-421-3976
NSN 5920-00-758-1348
NSN 5960-01-007-9404
NSN 2925-00-149-0760
NSN 5960-01-151-1152
NSN 6685-01-198-5776
NSN 5925-00-004-6994
NSN 6320-01-473-9024
NSN 5996-01-010-8609
NSN 5835-01-382-4592
NSN 6240-01-415-5581