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 5910-00-383-1993
NSN 5965-00-518-0958
NSN 5990-01-225-9820
NSN 6135-01-164-3561
NSN 2925-01-531-3872
NSN 6645-00-892-1605
NSN 5835-00-804-0569
NSN 5950-01-152-7510
NSN 6150-01-023-5987
NSN 5985-01-105-3847
NSN 6130-01-625-8107
NSN 5965-01-237-3342