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 5930-00-927-7244
NSN 6220-01-463-8520
NSN 6150-01-499-1385
NSN 5925-01-502-6475
NSN 6110-01-108-5057
NSN 6135-01-422-1440
NSN 5835-00-262-6146
NSN 6685-01-634-0611
NSN 6685-01-087-9664
NSN 6240-00-132-0955
NSN 5985-00-307-9659
NSN 5960-01-175-7309