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 5985-01-375-1301
NSN 5835-00-393-1996
NSN 6320-01-629-1277
NSN 7035-00-703-3535
NSN 7035-01-068-1096
NSN 5990-00-246-2184
NSN 5950-01-107-7128
NSN 6320-01-442-8604
NSN 2925-00-139-3231
NSN 6645-01-007-2063
NSN 5935-01-182-1057
NSN 6135-00-738-5571