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 5990-01-416-1017
NSN 6220-01-436-9537
NSN 6320-01-006-6138
NSN 5855-01-508-4654
NSN 5925-01-270-2119
NSN 5965-01-180-5468
NSN 5950-01-475-9727
NSN 6150-00-071-1180
NSN 5835-00-315-3797
NSN 5920-01-275-8554
NSN 5920-00-553-7118
NSN 6320-01-145-9013