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 5895-01-240-4307
NSN 5990-00-707-0731
NSN 5930-01-651-5331
NSN 5905-00-277-7439
NSN 5895-01-473-2729
NSN 5950-00-038-0716
NSN 6620-00-202-5122
NSN 6610-01-018-9122
NSN 5990-01-123-4226
NSN 2925-01-440-9912
NSN 6220-00-577-3434
NSN 5915-01-381-2519