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 6620-00-900-3986
NSN 6110-01-205-0669
NSN 6320-01-177-3192
NSN 6130-01-012-1770
NSN 6645-01-527-5864
NSN 5945-00-367-2124
NSN 6150-01-292-5769
NSN 5915-00-636-9785
NSN 5990-01-246-7417
NSN 5915-00-624-8174
NSN 5895-01-304-0605
NSN 5950-00-789-5108