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 6240-01-187-7758
NSN 6240-01-169-1686
NSN 2925-01-141-7563
NSN 6145-01-599-5770
NSN 6320-01-103-6218
NSN 6320-01-415-0953
NSN 2925-01-633-4048
NSN 2925-01-100-3694
NSN 5855-00-782-7714
NSN 6220-00-501-1359
NSN 7035-00-763-6180
NSN 5905-01-089-9757