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 5920-01-014-0611
NSN 6130-01-432-3803
NSN 5895-01-493-8142
NSN 5835-01-276-4621
NSN 6610-01-266-8691
NSN 5985-00-949-5691
NSN 5999-01-093-7158
NSN 2925-01-633-4048
NSN 5895-01-335-7860
NSN 5950-01-252-8905
NSN 5910-00-334-8756
NSN 2925-01-554-1474