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 6220-00-250-5461
NSN 5990-01-468-1292
NSN 5920-00-094-0655
NSN 5975-00-483-4979
NSN 5915-01-565-6913
NSN 6110-00-551-8321
NSN 5999-01-540-4435
NSN 5965-00-078-5770
NSN 5925-00-591-2792
NSN 6130-00-266-7496
NSN 5835-00-113-6090
NSN 5895-00-596-8678