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 5835-01-231-4994
NSN 5960-00-497-9862
NSN 5950-01-173-2137
NSN 4140-01-437-4779
NSN 6645-00-935-7046
NSN 5855-01-260-7445
NSN 6150-01-258-5487
NSN 5950-01-504-8639
NSN 5996-01-640-9357
NSN 6150-01-423-0505
NSN 5990-00-932-9324
NSN 2925-01-381-5307