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 6240-00-999-7806
NSN 7035-01-141-8076
NSN 5925-00-258-4090
NSN 7035-00-800-0770
NSN 5905-00-419-0679
NSN 7035-00-054-3414
NSN 6685-00-725-5978
NSN 5950-00-239-7649
NSN 5930-01-580-9596
NSN 6145-01-240-1935
NSN 6320-00-445-1187
NSN 5930-01-016-1926