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 5915-01-444-4946
NSN 5920-01-107-0838
NSN 5930-01-055-9259
NSN 6220-01-380-7148
NSN 5960-01-323-6432
NSN 5965-01-541-9336
NSN 5935-01-384-3835
NSN 5905-01-050-5330
NSN 6130-00-043-3843
NSN 6650-00-122-9452
NSN 5975-00-468-3978
NSN 2925-01-486-7277