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 5925-01-247-6543
NSN 5985-00-952-6626
NSN 5985-01-451-0376
NSN 5999-01-602-7930
NSN 6240-00-959-7025
NSN 6320-00-284-1524
NSN 6320-01-421-3777
NSN 6135-00-567-1322
NSN 4140-00-790-0015
NSN 5930-01-453-1558
NSN 6610-01-266-3447
NSN 5925-01-340-1185