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 5915-01-501-5895
NSN 2925-00-101-7972
NSN 5998-00-111-3644
NSN 6240-00-222-9135
NSN 6145-00-112-8578
NSN 5950-01-077-3728
NSN 5990-01-606-9305
NSN 6110-01-285-6464
NSN 5998-01-152-2248
NSN 5915-01-270-6093
NSN 6105-00-235-7982
NSN 5925-01-528-6559