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 5935-00-284-8306
NSN 5895-00-441-9714
NSN 6110-01-188-0138
NSN 5930-01-581-3520
NSN 6685-01-158-9427
NSN 5915-01-411-5355
NSN 5996-01-069-2915
NSN 5990-01-042-1984
NSN 6220-01-593-8648
NSN 6145-01-617-6552
NSN 5985-01-390-8708
NSN 7035-01-460-5117