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 5998-01-020-8986
NSN 6650-01-606-9209
NSN 6610-01-426-5090
NSN 5935-01-085-0496
NSN 5975-00-518-1733
NSN 5935-01-471-3800
NSN 5960-01-202-6610
NSN 6220-00-892-7755
NSN 6220-00-063-7661
NSN 5910-00-879-5015
NSN 7035-00-946-2642
NSN 6150-01-476-0771