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 5960-01-112-4660
NSN 5925-01-485-0125
NSN 5965-00-387-6880
NSN 5965-00-253-1302
NSN 6240-00-169-6408
NSN 5925-00-068-3940
NSN 5996-01-629-6223
NSN 6685-01-356-2989
NSN 6130-00-165-2983
NSN 5990-01-376-8930
NSN 6145-01-583-1815
NSN 6240-01-310-8778