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 5915-00-491-5786
NSN 6145-00-170-7947
NSN 5930-01-495-1925
NSN 5950-01-487-2271
NSN 6620-00-663-8962
NSN 5930-01-417-2595
NSN 6130-01-123-4126
NSN 2925-00-251-0105
NSN 5905-00-892-9915
NSN 2925-00-284-1534
NSN 6650-01-517-9452
NSN 5960-00-525-1898