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 6685-00-140-5237
NSN 6145-00-311-8884
NSN 5935-01-168-0757
NSN 6110-01-418-6589
NSN 6150-01-449-8714
NSN 5996-01-573-6931
NSN 6135-01-131-9352
NSN 6685-01-128-3052
NSN 5996-00-222-6049
NSN 2925-01-535-7235
NSN 5905-00-717-8602
NSN 5905-00-111-2214