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 5990-00-594-7291
NSN 5920-01-150-6870
NSN 6685-01-229-5969
NSN 6145-00-329-5323
NSN 5975-00-501-8058
NSN 5945-01-272-7292
NSN 5999-00-009-1609
NSN 5835-01-281-9662
NSN 5920-01-321-9402
NSN 5920-00-487-4256
NSN 5835-00-644-4512
NSN 5960-01-334-5146