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 5999-00-594-1719
NSN 5998-01-282-9350
NSN 5930-01-322-4924
NSN 2925-00-928-5931
NSN 5975-01-334-2450
NSN 6610-01-013-8922
NSN 5930-01-588-6579
NSN 5990-00-348-1423
NSN 6150-01-064-2957
NSN 5905-01-120-6965
NSN 5945-01-310-7291
NSN 5998-00-959-2283