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 6240-01-192-2479
NSN 5910-01-344-7951
NSN 2925-01-213-6622
NSN 6105-01-426-7906
NSN 6610-01-570-7550
NSN 6685-01-113-8759
NSN 5945-01-487-5208
NSN 5990-00-224-9408
NSN 2925-01-468-7073
NSN 6145-00-174-1730
NSN 5985-01-023-7854
NSN 5895-01-185-9211