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 5998-01-643-9019
NSN 5905-00-483-5601
NSN 5998-00-009-3710
NSN 5996-01-305-7039
NSN 6650-01-426-4253
NSN 6220-01-314-9594
NSN 6130-01-023-8031
NSN 6620-01-137-4228
NSN 6650-01-407-4653
NSN 6130-01-153-2265
NSN 6145-01-012-0804
NSN 5996-00-281-4500