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 6220-00-812-0515
NSN 5998-01-371-2050
NSN 6110-01-566-7845
NSN 5910-01-317-3865
NSN 5855-01-575-0061
NSN 5990-01-573-1634
NSN 5855-01-242-2572
NSN 5930-00-519-0662
NSN 5925-01-184-0633
NSN 6650-01-465-0371
NSN 5965-00-067-7393
NSN 5996-00-964-5229