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 6130-00-287-9332
NSN 5835-00-136-9103
NSN 6135-01-442-7275
NSN 4140-01-135-0998
NSN 6110-00-913-6474
NSN 5935-00-644-9978
NSN 5965-00-602-1508
NSN 6685-01-086-7268
NSN 5975-00-752-7644
NSN 5855-00-185-1560
NSN 5920-01-433-9119
NSN 5910-00-900-4436