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 6145-01-443-3400
NSN 5965-00-204-8513
NSN 6130-01-110-3881
NSN 6320-01-506-9439
NSN 6130-01-011-2142
NSN 5905-01-273-0473
NSN 5990-01-357-2453
NSN 5905-01-031-3302
NSN 5965-01-645-0314
NSN 5915-01-538-4403
NSN 5895-01-584-2010
NSN 5855-01-400-1590