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 5990-01-578-5382
NSN 6105-01-541-0552
NSN 5975-01-053-8308
NSN 5915-01-362-1588
NSN 6220-01-115-5531
NSN 5905-01-154-2579
NSN 6130-01-389-7567
NSN 5930-01-548-8895
NSN 5915-01-253-1514
NSN 5895-00-001-2457
NSN 6645-01-268-7265
NSN 5915-01-270-6093