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 5960-00-116-7508
NSN 6645-00-055-2170
NSN 5935-01-519-2242
NSN 5920-00-187-0260
NSN 5915-00-131-6344
NSN 6135-01-386-5709
NSN 5985-00-249-1221
NSN 5998-01-555-8489
NSN 6150-01-003-7328
NSN 5985-00-221-5566
NSN 6150-00-364-1948
NSN 6105-00-583-0265