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 5985-01-429-9286
NSN 6220-00-292-6775
NSN 5855-01-250-2421
NSN 6685-01-430-9192
NSN 5965-00-485-9575
NSN 5910-01-650-8609
NSN 5925-00-740-6835
NSN 4140-01-016-3143
NSN 6105-01-431-8998
NSN 5990-01-351-4621
NSN 6685-00-279-3620
NSN 5990-00-827-0684