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 5935-01-098-9883
NSN 5915-01-279-6813
NSN 5915-01-160-2397
NSN 6685-01-356-8177
NSN 4140-01-374-1919
NSN 5910-00-625-7769
NSN 5996-00-900-8177
NSN 6645-01-617-3354
NSN 5996-00-102-4497
NSN 5855-01-359-5727
NSN 5925-00-280-2273
NSN 6110-01-384-3125