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 5975-01-284-3533
NSN 5905-01-456-5194
NSN 5925-01-531-6492
NSN 5950-01-393-9222
NSN 5998-01-487-6071
NSN 6105-01-264-3079
NSN 2925-01-472-4144
NSN 6620-00-181-6391
NSN 6110-01-377-8041
NSN 2925-01-556-0333
NSN 5910-01-408-4622
NSN 5905-00-998-5650