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 5855-00-221-9435
NSN 5835-00-838-0707
NSN 5990-00-172-7951
NSN 6240-01-300-8528
NSN 5935-01-187-0783
NSN 6150-01-425-6009
NSN 6685-00-596-8765
NSN 7035-00-295-0451
NSN 5960-00-466-2258
NSN 5895-01-218-0602
NSN 5835-01-317-4840
NSN 5895-01-044-6369