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 2925-01-645-2948
NSN 5985-00-419-3671
NSN 5935-01-334-7478
NSN 6105-00-356-1955
NSN 6685-00-081-2864
NSN 5920-01-247-9196
NSN 5920-01-279-2950
NSN 6645-00-242-0480
NSN 5910-01-463-2816
NSN 5910-00-920-3299
NSN 5835-01-515-6537
NSN 6145-01-433-5511