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 6620-01-210-5583
NSN 6220-01-386-5613
NSN 2925-01-394-5650
NSN 6610-01-508-6272
NSN 5935-01-626-6748
NSN 5965-01-326-9860
NSN 6130-01-652-4282
NSN 6320-00-270-8222
NSN 5996-01-486-3733
NSN 6110-00-166-7865
NSN 5990-00-874-3036
NSN 5920-00-504-0564