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 5945-01-300-0489
NSN 5999-00-751-1188
NSN 5960-01-150-8004
NSN 5990-01-485-6495
NSN 5915-00-361-9148
NSN 6610-01-412-5776
NSN 5985-01-487-8805
NSN 6130-01-324-1834
NSN 6685-01-497-8103
NSN 6150-01-475-3100
NSN 5935-01-013-7520
NSN 5990-00-133-7734