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 6650-01-014-5990
NSN 5905-01-020-9457
NSN 5950-01-506-7684
NSN 6650-01-241-7978
NSN 5855-01-033-1375
NSN 6150-00-671-8782
NSN 5950-00-224-9214
NSN 5935-01-585-7975
NSN 5915-01-289-4088
NSN 6145-01-026-6444
NSN 5998-00-233-0883
NSN 5905-01-182-6594