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 6685-01-345-9373
NSN 5930-01-435-4948
NSN 2925-01-430-4206
NSN 2925-01-308-9809
NSN 5915-00-280-1428
NSN 7035-01-579-4029
NSN 6610-00-908-3698
NSN 5920-01-458-1770
NSN 5945-01-147-5314
NSN 5960-00-273-3260
NSN 4140-00-846-4786
NSN 6240-00-033-9594