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 6645-01-149-2247
NSN 5996-01-422-5495
NSN 5996-00-009-7956
NSN 6320-01-240-4637
NSN 2925-01-108-3307
NSN 5950-01-226-8422
NSN 6130-00-605-4296
NSN 5965-01-385-7813
NSN 6145-01-068-0454
NSN 6220-01-510-9765
NSN 5965-01-620-5320
NSN 5990-01-407-6615