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 5960-01-054-9639
NSN 5975-01-435-9386
NSN 5985-00-343-3632
NSN 6130-01-529-7000
NSN 5915-00-514-2098
NSN 5855-01-585-1675
NSN 5945-00-725-5576
NSN 5996-01-065-3440
NSN 5915-01-564-0650
NSN 5960-00-073-9277
NSN 6610-01-472-2757
NSN 5975-01-245-9429