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 4140-01-141-7692
NSN 5945-01-367-6469
NSN 6610-00-010-3085
NSN 6645-01-037-9125
NSN 4140-01-458-6802
NSN 5895-00-823-1457
NSN 6240-01-006-1261
NSN 5930-01-160-8427
NSN 5930-00-282-0699
NSN 5920-00-236-1118
NSN 2925-00-315-8442
NSN 6130-01-011-7908