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 5950-01-539-5142
NSN 5985-00-015-0900
NSN 5990-00-081-1266
NSN 5925-01-368-3723
NSN 6110-01-297-8066
NSN 6620-00-816-9755
NSN 6685-01-012-1557
NSN 6610-01-228-8883
NSN 6620-01-222-2063
NSN 5990-00-125-5036
NSN 5998-01-308-9106
NSN 6685-01-305-1087