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 5998-00-816-9752
NSN 6685-01-041-4407
NSN 6150-00-721-3945
NSN 6220-00-343-0182
NSN 6105-01-628-8587
NSN 5960-00-857-8742
NSN 7035-01-332-3496
NSN 6145-01-648-5947
NSN 6145-00-210-6257
NSN 5975-01-322-3678
NSN 5945-01-236-8865
NSN 5945-01-600-9577