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 6220-01-655-8041
NSN 5855-01-443-2509
NSN 5915-01-047-6368
NSN 5915-00-079-1011
NSN 5905-01-534-5964
NSN 5975-00-665-3298
NSN 7035-01-017-8994
NSN 5990-01-116-2181
NSN 6620-01-448-0572
NSN 5998-01-099-2775
NSN 6650-01-007-1890
NSN 5925-01-197-8406