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 6135-01-549-9135
NSN 5905-01-497-7508
NSN 6620-00-764-3057
NSN 5910-00-403-4635
NSN 5835-01-384-3206
NSN 4140-01-250-7159
NSN 5935-01-256-8026
NSN 6240-01-425-1659
NSN 5935-01-265-4681
NSN 5905-01-276-2940
NSN 5925-00-114-0740
NSN 6135-01-475-3671