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 5920-00-958-7202
NSN 5965-01-012-1065
NSN 6150-00-006-8694
NSN 5985-01-486-4071
NSN 6645-01-073-5302
NSN 6150-01-608-9567
NSN 6320-01-600-0787
NSN 5855-01-274-2307
NSN 5915-00-775-6058
NSN 6105-01-500-3409
NSN 5925-01-520-5811
NSN 6145-01-199-2311