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 5990-01-024-9659
NSN 6620-00-130-0815
NSN 5905-00-926-2905
NSN 5915-00-992-2161
NSN 5895-01-501-5436
NSN 6240-01-262-9590
NSN 6620-01-167-0881
NSN 6610-01-437-2506
NSN 5996-01-281-7336
NSN 6685-01-355-3550
NSN 5930-00-445-7402
NSN 5925-00-165-0371