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 5925-00-938-3447
NSN 5930-00-343-6755
NSN 5950-01-552-1095
NSN 5950-00-859-9028
NSN 5925-00-435-8391
NSN 6135-01-654-5642
NSN 5910-00-947-7391
NSN 5999-01-436-9529
NSN 5905-00-890-5739
NSN 4140-01-232-6067
NSN 5975-01-326-2264
NSN 5985-00-943-7642