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 5915-00-775-6058
NSN 6320-00-674-1361
NSN 5960-01-071-0389
NSN 5965-00-391-0562
NSN 5975-01-399-6800
NSN 5915-01-406-3271
NSN 5945-00-708-8696
NSN 2925-00-951-0150
NSN 6620-00-555-3992
NSN 6150-00-571-6360
NSN 5905-01-271-2127
NSN 5855-01-644-3271