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 6685-01-081-4095
NSN 5945-01-386-3208
NSN 4140-01-573-8264
NSN 2925-01-341-9400
NSN 5935-00-542-2265
NSN 6110-00-782-1174
NSN 5925-01-473-1924
NSN 5905-01-381-6386
NSN 5990-01-652-7373
NSN 5945-01-206-4520
NSN 6135-00-112-8637
NSN 5925-00-836-7914