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 5950-01-091-3990
NSN 5990-00-501-4994
NSN 5925-01-579-3744
NSN 4140-00-684-7010
NSN 5925-01-435-5869
NSN 6685-01-393-5444
NSN 6320-01-177-3192
NSN 7035-01-095-9322
NSN 5975-01-353-7349
NSN 6220-01-529-2262
NSN 5975-01-353-3194
NSN 5915-00-204-4660