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 5999-01-427-3702
NSN 5985-00-213-3786
NSN 6240-01-267-6499
NSN 5950-00-890-7901
NSN 5960-01-613-6113
NSN 6610-01-308-5452
NSN 5855-00-107-7993
NSN 5990-01-380-7815
NSN 6220-01-170-4650
NSN 5996-01-109-1586
NSN 5985-01-168-1664
NSN 5998-01-152-6432