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 6620-01-456-0529
NSN 6135-01-463-2445
NSN 5950-01-027-8369
NSN 5925-01-481-0032
NSN 5920-01-084-5118
NSN 5999-00-269-5320
NSN 6610-01-363-9745
NSN 6110-01-197-6954
NSN 6240-00-963-5964
NSN 6620-00-477-7808
NSN 6135-01-468-6491
NSN 6110-00-185-2021