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 5945-01-043-6225
NSN 6320-01-532-7491
NSN 6320-01-329-2297
NSN 4140-01-388-7367
NSN 6105-01-026-2803
NSN 6150-01-441-9574
NSN 6240-00-899-1049
NSN 5930-01-211-7779
NSN 5945-01-021-4063
NSN 5925-00-345-2663
NSN 5985-01-442-0454
NSN 6105-00-961-1668