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 5965-01-560-8572
NSN 5895-01-032-4717
NSN 2925-01-291-9997
NSN 5935-00-342-4942
NSN 5975-00-143-4658
NSN 5855-00-466-2309
NSN 6685-00-787-8594
NSN 5999-01-377-2387
NSN 6610-00-564-9360
NSN 6130-00-581-9322
NSN 6130-01-133-7877
NSN 5985-01-158-1368