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 6130-01-310-8857
NSN 6320-00-500-4172
NSN 6130-00-841-8917
NSN 5835-01-461-8184
NSN 5935-00-432-9197
NSN 5975-01-109-6663
NSN 6105-01-224-6438
NSN 5996-00-561-9163
NSN 6610-01-323-0901
NSN 5965-00-396-3411
NSN 6645-00-175-8156
NSN 5835-01-328-6626