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 5996-01-014-6103
NSN 6685-00-847-0010
NSN 6145-01-383-3824
NSN 5925-01-172-0036
NSN 6620-01-412-7426
NSN 6220-01-613-7368
NSN 5960-00-061-2595
NSN 6110-01-090-0417
NSN 6240-01-425-1939
NSN 5930-01-411-4763
NSN 6620-01-535-0070
NSN 6150-00-248-0063