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 6685-00-004-1033
NSN 5855-01-452-1406
NSN 6620-00-703-0860
NSN 4140-00-507-2602
NSN 5915-00-595-8090
NSN 5925-01-225-3430
NSN 5960-01-577-5682
NSN 6645-01-027-3838
NSN 7035-01-127-0147
NSN 5920-01-381-2597
NSN 5920-01-076-5467
NSN 5925-01-406-5626