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 5990-00-274-3225
NSN 6220-01-197-7680
NSN 5930-01-456-8990
NSN 6130-00-904-4770
NSN 4140-01-197-0406
NSN 5990-01-128-7599
NSN 5895-01-445-4344
NSN 6685-00-023-5933
NSN 6145-00-360-7760
NSN 5950-01-397-8082
NSN 5920-01-426-6666
NSN 5925-01-010-7593