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 6610-01-620-1553
NSN 6240-00-364-0850
NSN 4140-01-004-9177
NSN 5965-00-543-0013
NSN 6645-00-171-9251
NSN 5895-01-006-0920
NSN 5915-01-459-1090
NSN 7035-01-006-3186
NSN 5975-01-418-9270
NSN 6130-00-409-0823
NSN 5990-01-443-2931
NSN 5985-01-322-8174