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 5895-01-354-1798
NSN 5935-00-477-8499
NSN 5925-00-324-0142
NSN 5965-00-249-6980
NSN 2925-00-284-1534
NSN 6610-00-798-5819
NSN 5975-01-602-8650
NSN 6610-01-440-9913
NSN 5960-01-267-6139
NSN 7035-01-655-5081
NSN 5895-00-791-5661
NSN 5975-01-096-9380