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 5910-01-341-3640
NSN 6650-00-539-7298
NSN 5925-00-790-4903
NSN 5905-01-486-0996
NSN 5855-01-437-6161
NSN 5915-00-429-1986
NSN 2925-01-224-1885
NSN 6240-01-549-9408
NSN 5950-00-345-8549
NSN 6650-01-179-3823
NSN 6645-01-025-1002
NSN 5910-01-531-8685