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 6620-00-989-8692
NSN 2925-00-139-8309
NSN 6145-00-971-2431
NSN 5985-01-102-2463
NSN 5950-01-111-0536
NSN 5835-01-575-5053
NSN 6650-00-518-2962
NSN 6110-01-570-3905
NSN 6620-01-004-7072
NSN 5905-01-056-8679
NSN 5855-00-237-4088
NSN 5935-01-625-1659