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 5975-01-236-7589
NSN 2925-01-224-1885
NSN 6620-01-564-9870
NSN 6610-00-525-6022
NSN 6150-01-495-3764
NSN 6320-01-573-6490
NSN 6145-00-942-4661
NSN 5910-01-602-3181
NSN 6220-01-213-6154
NSN 6130-01-508-9608
NSN 5910-00-223-9826
NSN 6150-01-012-5204