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 4140-01-312-2361
NSN 6685-01-442-6195
NSN 6320-00-937-5625
NSN 5855-01-369-5037
NSN 5855-01-461-7726
NSN 6130-00-496-0549
NSN 4140-01-399-0330
NSN 6150-01-467-2380
NSN 6150-00-889-5264
NSN 6220-01-110-7562
NSN 6645-00-256-4072
NSN 5895-01-008-4454