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 6650-01-132-6860
NSN 6135-00-497-0491
NSN 5910-01-458-5603
NSN 5975-01-576-8693
NSN 5935-01-611-3535
NSN 5950-01-411-1104
NSN 6220-01-570-9602
NSN 5925-00-111-1969
NSN 6220-00-396-0039
NSN 6110-00-182-8664
NSN 7035-01-501-5549
NSN 6650-01-091-2435