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 5999-01-600-9919
NSN 6645-00-881-9978
NSN 5905-00-208-5265
NSN 7035-01-338-2994
NSN 6610-01-325-4157
NSN 5975-00-153-7971
NSN 7035-01-440-1862
NSN 5985-00-060-7025
NSN 5975-00-552-1764
NSN 5905-01-605-9718
NSN 6105-00-205-0655
NSN 6150-01-050-4606