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 5950-00-592-0907
NSN 5960-00-392-6291
NSN 6240-00-233-3481
NSN 5915-00-036-3955
NSN 6110-01-167-8906
NSN 6685-00-030-4662
NSN 5996-01-426-3948
NSN 5996-00-238-5654
NSN 7035-01-341-9098
NSN 6150-01-299-6340
NSN 5835-01-647-6426
NSN 6110-00-482-3372