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 6145-00-915-0134
NSN 6685-00-082-3153
NSN 5965-00-908-1402
NSN 5960-01-024-0578
NSN 6240-01-068-3491
NSN 2925-01-633-4048
NSN 5910-00-993-8535
NSN 5925-01-595-6276
NSN 5835-01-485-0210
NSN 5835-00-051-9092
NSN 6610-01-274-2479
NSN 5930-01-235-9192