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 5905-01-217-4602
NSN 6105-00-948-0477
NSN 6240-00-256-6410
NSN 6135-01-364-2738
NSN 5996-01-388-1275
NSN 6620-00-767-9415
NSN 5950-01-152-8048
NSN 5855-01-067-4129
NSN 5990-01-303-0564
NSN 5930-01-355-7996
NSN 5999-00-834-4944
NSN 6110-01-377-8041