Mil-std-417a gr sb725f1
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 6650-01-406-5322
NSN 7035-01-238-9301
NSN 5920-01-150-3499
NSN 5915-01-428-6681
NSN 7035-01-222-0729
NSN 5835-01-364-6830
NSN 6240-00-624-8440
NSN 5910-00-949-0551
NSN 5855-01-591-0466
NSN 6145-01-197-3887
NSN 6135-01-436-7733
NSN 6320-01-029-4220