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 6620-01-237-5603
NSN 6110-00-981-4475
NSN 6105-00-268-2878
NSN 5925-01-354-9726
NSN 6240-01-322-4887
NSN 5905-00-005-2867
NSN 4140-01-120-7640
NSN 5895-01-645-5473
NSN 5910-01-315-1417
NSN 5905-01-435-4194
NSN 5905-01-452-3310
NSN 5960-01-491-2993