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 5835-01-399-5820
NSN 5925-01-212-1492
NSN 6650-01-241-1269
NSN 6650-00-071-0612
NSN 5996-01-482-0178
NSN 5925-00-918-5531
NSN 6620-01-149-2842
NSN 5985-00-620-0309
NSN 5975-01-177-8577
NSN 6135-00-951-3426
NSN 6320-00-405-2348
NSN 4140-00-541-9077