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 5835-01-424-2782
NSN 5935-00-425-6362
NSN 5950-01-539-3917
NSN 5895-00-753-5349
NSN 2925-00-441-8252
NSN 5975-01-053-1331
NSN 6620-01-038-7468
NSN 6110-01-442-8622
NSN 6645-00-550-7395
NSN 7035-00-020-2227
NSN 6240-01-265-0960
NSN 7035-01-211-5636