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 5975-00-421-7504
NSN 5950-01-142-0588
NSN 6240-01-388-2413
NSN 5925-01-578-2137
NSN 5835-01-653-7806
NSN 5965-01-278-2107
NSN 6105-01-508-1601
NSN 5990-01-633-9503
NSN 5835-01-371-8759
NSN 5996-00-296-1419
NSN 2925-01-032-3814
NSN 5915-01-503-0855