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 6685-00-515-4818
NSN 5855-01-278-8922
NSN 5925-01-177-4636
NSN 5950-00-550-7155
NSN 6130-01-430-7193
NSN 6135-01-373-2518
NSN 5915-00-077-5555
NSN 5925-01-100-3631
NSN 5996-01-112-0154
NSN 5985-01-423-7984
NSN 4140-00-274-3333
NSN 6135-00-985-7845