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 5990-00-679-6157
NSN 5985-01-021-8395
NSN 5905-01-420-6319
NSN 6685-01-510-3339
NSN 5930-01-133-3972
NSN 2925-01-159-0506
NSN 5950-01-227-7095
NSN 5950-00-609-3382
NSN 6130-01-029-9577
NSN 6105-00-122-6566
NSN 5960-00-665-3154
NSN 6130-01-653-5961