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 6685-01-432-5193
NSN 6645-01-282-9974
NSN 6145-01-480-7701
NSN 6145-00-107-7913
NSN 5960-00-140-9583
NSN 5996-01-124-0781
NSN 6240-01-212-9756
NSN 6620-00-098-5652
NSN 6650-01-240-2334
NSN 5855-00-962-5792
NSN 5998-00-229-7911
NSN 6685-01-261-8058