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 6220-01-160-3705
NSN 6320-00-213-0477
NSN 6610-00-336-2404
NSN 5920-01-087-3458
NSN 5990-01-236-8399
NSN 6135-00-906-0984
NSN 5910-01-394-5013
NSN 5990-00-146-3534
NSN 5905-00-989-4704
NSN 5985-01-128-2757
NSN 6220-00-147-4011
NSN 5835-00-177-2970