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 4140-00-332-5956
NSN 5935-01-385-0707
NSN 6150-01-393-0268
NSN 5905-00-656-2442
NSN 6135-00-871-3646
NSN 5935-01-529-8188
NSN 6145-01-559-1494
NSN 5855-01-308-0955
NSN 6130-01-222-0475
NSN 5960-01-558-7787
NSN 6130-00-840-4666
NSN 6145-00-280-2154