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 6685-01-069-4336
NSN 6320-01-160-3730
NSN 5945-00-102-2357
NSN 5925-01-394-4830
NSN 6130-01-140-7772
NSN 6650-01-019-7521
NSN 6645-01-128-0895
NSN 5985-00-030-0093
NSN 5975-01-564-8545
NSN 5960-00-939-8124
NSN 5920-00-081-9156
NSN 6150-01-231-6662