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 5930-00-683-9446
NSN 5985-01-623-2580
NSN 5895-01-054-4104
NSN 2925-01-577-0004
NSN 5950-00-378-9959
NSN 2925-01-472-4423
NSN 6145-01-576-9609
NSN 6320-01-392-6922
NSN 5935-00-756-4623
NSN 6220-01-104-1447
NSN 5910-00-565-7249
NSN 2925-00-081-3547