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 5985-01-142-1773
NSN 6685-01-290-7486
NSN 6620-00-280-2874
NSN 5920-00-584-4592
NSN 5915-01-265-8357
NSN 5915-01-408-3435
NSN 5960-01-323-6432
NSN 5999-01-113-8734
NSN 6220-01-027-1294
NSN 5960-01-067-1448
NSN 5998-01-077-6322
NSN 6610-01-570-6070