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 5905-01-204-3048
NSN 5960-00-985-9193
NSN 5996-00-539-7956
NSN 6150-01-555-8442
NSN 6650-01-090-2059
NSN 6220-01-322-9337
NSN 5925-01-085-6444
NSN 4140-00-418-2939
NSN 5985-01-421-8696
NSN 6220-01-478-0986
NSN 5960-01-234-0926
NSN 5965-01-097-2027