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 6135-01-464-2075
NSN 6645-00-033-8714
NSN 6130-00-253-1304
NSN 5950-01-159-7995
NSN 5960-00-840-5465
NSN 5985-01-352-5696
NSN 5930-01-565-8710
NSN 5905-00-480-5458
NSN 5965-01-408-9551
NSN 5835-01-336-1153
NSN 4140-01-634-0330
NSN 5895-00-003-4496