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 6110-01-391-0211
NSN 6105-00-082-3210
NSN 7035-01-053-4769
NSN 5945-01-451-7219
NSN 6135-00-567-1322
NSN 2925-00-056-7112
NSN 5855-01-290-3248
NSN 6650-01-307-6009
NSN 2925-00-261-5800
NSN 6645-01-076-3494
NSN 6145-00-398-4405
NSN 5930-00-091-3292