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 5950-00-278-4186
NSN 6645-01-201-5802
NSN 5950-00-081-2477
NSN 6650-01-132-2697
NSN 5895-00-412-6989
NSN 5965-01-285-9934
NSN 6135-00-405-1989
NSN 5910-00-478-5901
NSN 6150-01-123-0678
NSN 5925-01-225-5774
NSN 6685-00-484-0844
NSN 6240-01-161-5007