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 6685-01-034-2277
NSN 5975-00-973-9966
NSN 5915-01-303-2662
NSN 5905-01-540-7442
NSN 5895-00-007-7114
NSN 5975-01-605-0367
NSN 6105-01-035-1065
NSN 6145-00-150-5049
NSN 2925-00-845-1480
NSN 6685-00-461-1902
NSN 4140-01-481-4051
NSN 5996-01-277-6715