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 5920-00-868-7651
NSN 5999-01-472-5881
NSN 5975-01-277-5661
NSN 5925-01-332-8993
NSN 5935-00-689-8796
NSN 6320-01-202-8761
NSN 5935-01-397-0655
NSN 2925-01-448-1277
NSN 5925-01-148-7756
NSN 6150-00-371-4620
NSN 5985-01-147-6909
NSN 6650-01-474-3754