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 6645-00-300-0401
NSN 5998-01-452-9574
NSN 6135-01-009-4929
NSN 5835-01-442-6482
NSN 5965-00-831-2134
NSN 5965-01-074-7306
NSN 5996-00-072-6329
NSN 5905-00-113-5696
NSN 5998-00-317-7215
NSN 5835-01-216-1215
NSN 5999-01-360-5608
NSN 6610-01-185-5832