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 6685-00-141-4300
NSN 5895-01-139-9719
NSN 5996-00-964-5229
NSN 5925-00-547-7739
NSN 5930-00-906-3946
NSN 5855-01-421-1440
NSN 5996-01-131-5238
NSN 7035-01-196-3445
NSN 5985-00-120-8740
NSN 5915-01-469-6831
NSN 5920-00-471-2548
NSN 5935-00-755-3688