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 6645-01-425-2330
NSN 5945-01-347-5267
NSN 5960-00-243-2216
NSN 5965-01-592-1188
NSN 5950-01-286-8276
NSN 6220-00-969-4651
NSN 5930-00-205-9157
NSN 5855-01-656-6808
NSN 6685-01-371-2956
NSN 5895-01-062-9085
NSN 5915-00-728-1347
NSN 5895-00-243-6649