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 6135-01-246-0308
NSN 7035-00-403-5340
NSN 6150-00-785-1219
NSN 5930-00-565-4117
NSN 5915-00-802-6771
NSN 6240-01-425-1160
NSN 6650-01-271-8239
NSN 5985-01-464-4302
NSN 5925-01-026-9649
NSN 6105-01-559-1826
NSN 5985-01-488-5690
NSN 5996-00-540-6570