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 5920-01-118-0309
NSN 5925-01-201-0098
NSN 5945-00-239-8203
NSN 5985-00-222-9934
NSN 5950-00-387-5741
NSN 6320-01-173-7950
NSN 5960-01-580-6360
NSN 6145-01-207-5173
NSN 5835-00-087-9512
NSN 5855-01-615-6200
NSN 6135-01-619-6293
NSN 5910-01-345-0923