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 6150-01-006-5730
NSN 5915-01-471-2012
NSN 5905-01-082-0123
NSN 6645-01-204-7094
NSN 6130-00-177-6466
NSN 5905-00-959-7149
NSN 5855-01-483-2346
NSN 2925-00-265-7539
NSN 6610-01-582-0423
NSN 6650-01-201-6935
NSN 6620-00-018-2196
NSN 6220-01-502-7312