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 5895-01-161-4943
NSN 5910-01-216-6768
NSN 6620-00-144-7201
NSN 6135-01-469-7574
NSN 5990-00-398-0507
NSN 5925-00-301-0810
NSN 5960-00-420-0418
NSN 5996-01-119-2720
NSN 5945-01-282-8070
NSN 6645-01-116-7713
NSN 5910-01-137-8956
NSN 5905-01-441-6297