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 5960-00-813-4520
NSN 5930-01-411-1481
NSN 5999-00-241-0043
NSN 6620-01-401-5356
NSN 6320-01-592-6248
NSN 5935-00-187-0723
NSN 6220-01-385-2049
NSN 5925-00-106-2675
NSN 6240-01-130-1505
NSN 5960-01-076-3936
NSN 6145-00-735-7764
NSN 6105-01-264-7549