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 5999-01-407-5550
NSN 5905-01-093-7230
NSN 5960-01-536-9763
NSN 6105-01-230-8656
NSN 5985-01-408-8640
NSN 6650-01-425-7362
NSN 6610-00-933-1380
NSN 6320-01-373-9355
NSN 5960-00-121-9926
NSN 6110-01-204-0919
NSN 6110-00-410-2576
NSN 6620-01-059-0876