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 5910-00-291-3955
NSN 5975-01-128-1570
NSN 2925-01-463-8856
NSN 5930-00-252-7049
NSN 6620-01-251-6844
NSN 5855-00-479-9819
NSN 5905-01-068-9326
NSN 5930-00-910-7439
NSN 5996-01-051-2097
NSN 5950-01-605-5955
NSN 6685-01-010-3176
NSN 6110-00-905-6148