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 6610-00-355-0450
NSN 5930-01-654-3669
NSN 5920-01-091-0123
NSN 5965-01-659-5671
NSN 5999-01-202-8707
NSN 5910-01-196-8666
NSN 7035-01-354-4318
NSN 5855-01-252-5424
NSN 5930-01-576-0543
NSN 6610-00-822-0431
NSN 5985-00-106-7143
NSN 6685-01-145-9568