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 6685-00-006-6142
NSN 5930-00-627-1848
NSN 6150-00-052-0127
NSN 5996-01-213-5184
NSN 5935-00-825-4637
NSN 5925-01-222-1636
NSN 5975-01-506-2962
NSN 2925-01-619-4825
NSN 5910-01-049-5677
NSN 6240-01-507-3609
NSN 5965-00-135-0547
NSN 5920-00-434-0981