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 6650-01-399-8552
NSN 5935-01-552-7737
NSN 6145-00-493-4073
NSN 6645-01-383-7362
NSN 6240-00-141-5282
NSN 5999-01-316-7393
NSN 5905-01-320-3530
NSN 6220-00-237-5964
NSN 5960-01-126-5767
NSN 5895-01-451-4341
NSN 5945-01-266-9519
NSN 5905-00-410-9997