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 5895-00-675-6895
NSN 6645-01-646-2953
NSN 5999-00-180-4282
NSN 5855-01-255-1688
NSN 5965-00-839-0302
NSN 6135-01-068-0119
NSN 5950-01-056-4707
NSN 6620-00-830-3554
NSN 6135-00-777-5562
NSN 5930-01-182-0302
NSN 5998-01-204-8862
NSN 5855-01-542-9059