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 6150-01-386-0912
NSN 5985-01-553-7396
NSN 5950-01-147-5662
NSN 5965-00-936-4428
NSN 5990-00-105-9575
NSN 6110-00-936-8416
NSN 7035-01-074-2343
NSN 5855-01-528-7287
NSN 5910-01-265-4689
NSN 5990-01-578-1499
NSN 5930-00-753-8777
NSN 5925-01-633-4041