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 5975-00-006-5248
NSN 5950-01-090-9803
NSN 7035-01-265-0216
NSN 5960-00-190-0090
NSN 4140-01-215-1125
NSN 2925-01-197-7864
NSN 5895-00-892-8395
NSN 5855-01-286-2916
NSN 4140-01-572-8983
NSN 6130-00-487-0584
NSN 6620-01-401-5356
NSN 5855-01-299-3510