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 6685-01-261-8058
NSN 5945-00-030-2003
NSN 5965-01-354-9834
NSN 5990-01-013-8464
NSN 5895-00-973-4720
NSN 2925-00-324-9052
NSN 6150-01-479-6861
NSN 6150-01-377-4037
NSN 6610-01-168-7943
NSN 6610-00-400-1202
NSN 5915-00-284-5430
NSN 5990-00-402-0564