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 6645-00-483-7044
NSN 5950-01-570-8677
NSN 5998-00-621-8600
NSN 6220-00-925-2233
NSN 5945-01-109-0798
NSN 5975-01-285-2352
NSN 6145-01-157-3488
NSN 6150-01-330-1702
NSN 4140-01-239-3944
NSN 7035-01-588-7882
NSN 5998-01-030-6044
NSN 6135-01-111-1495