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 5930-01-354-5503
NSN 5965-01-176-3227
NSN 5975-01-209-6806
NSN 6620-01-128-3053
NSN 6105-01-362-3034
NSN 5895-01-323-7418
NSN 6145-01-593-7739
NSN 2925-00-265-7539
NSN 2925-00-684-7708
NSN 5895-01-056-4548
NSN 6240-01-072-8293
NSN 5996-01-099-4588