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 5895-01-121-7079
NSN 5895-01-214-1902
NSN 5905-00-364-7790
NSN 5960-00-824-5229
NSN 5950-01-211-7018
NSN 5855-01-502-0508
NSN 2925-01-595-9720
NSN 5835-01-561-2959
NSN 5855-01-125-9167
NSN 5965-01-607-8609
NSN 5960-01-456-1735
NSN 6645-01-656-3843