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 5930-00-914-0557
NSN 6685-00-312-8319
NSN 5965-01-541-0879
NSN 5999-00-785-8180
NSN 5915-00-181-5876
NSN 6130-01-383-7053
NSN 5915-01-589-0171
NSN 5915-01-629-9166
NSN 5985-01-559-5405
NSN 2925-01-470-5534
NSN 5960-00-300-2358
NSN 5930-01-359-9771