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 5985-00-584-3795
NSN 5960-00-170-9614
NSN 5930-01-538-4857
NSN 5945-01-122-8316
NSN 2925-00-149-0760
NSN 6645-01-206-4888
NSN 5920-00-023-2926
NSN 5950-01-100-2106
NSN 6145-01-438-0368
NSN 6240-00-357-7976
NSN 7035-00-215-3272
NSN 5925-00-001-7446