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 5990-00-165-9195
NSN 6320-00-483-0451
NSN 5930-01-466-0880
NSN 5999-01-519-1485
NSN 6110-01-555-0946
NSN 5965-01-179-7749
NSN 5925-00-939-4979
NSN 5930-00-480-2046
NSN 6685-01-634-0611
NSN 6610-00-580-5997
NSN 5999-00-453-8723
NSN 6610-00-582-1107