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 6135-00-269-5843
NSN 5960-01-122-2686
NSN 5895-01-035-8498
NSN 5930-01-250-7511
NSN 6685-01-182-3634
NSN 5975-01-542-1318
NSN 6620-00-904-2139
NSN 5985-00-795-7292
NSN 6610-01-115-3678
NSN 6240-00-583-9863
NSN 5835-00-257-2852
NSN 5930-01-258-3979