Must conform to mil-std-413
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 6610-00-019-5460
NSN 6110-01-271-9765
NSN 5950-00-451-5823
NSN 5905-00-839-4558
NSN 5935-01-237-2652
NSN 5965-01-116-5339
NSN 6645-01-180-6219
NSN 5996-00-051-6667
NSN 5835-01-610-5744
NSN 6145-00-900-1851
NSN 5998-01-500-7259
NSN 5975-00-084-8704