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 5975-01-573-7902
NSN 5996-01-187-0838
NSN 5910-01-194-9782
NSN 5925-01-450-5886
NSN 6110-00-625-4941
NSN 5910-00-952-3775
NSN 5925-00-248-5734
NSN 5855-01-234-3376
NSN 5945-01-587-1072
NSN 5905-01-038-9522
NSN 6240-01-152-9015
NSN 7035-00-193-2269