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 5915-01-451-5712
NSN 5920-01-095-4519
NSN 5960-01-627-6547
NSN 6685-01-281-5495
NSN 5925-01-618-0853
NSN 5925-01-040-8963
NSN 5855-01-070-8084
NSN 6135-00-078-9931
NSN 5950-01-102-2122
NSN 5855-01-523-8926
NSN 6105-00-272-2661
NSN 5925-01-103-5874