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 6620-00-834-9430
NSN 6320-01-627-8295
NSN 5930-01-471-7269
NSN 6240-01-269-8454
NSN 5950-01-644-4429
NSN 6645-00-583-0066
NSN 5895-00-444-0139
NSN 6145-00-502-1828
NSN 5915-01-137-6440
NSN 5935-01-265-7022
NSN 5985-00-914-0619
NSN 6145-01-605-0948