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 5990-01-232-9008
NSN 6135-01-177-3552
NSN 6620-01-574-6774
NSN 6320-01-152-8873
NSN 6145-01-394-6392
NSN 6220-01-265-1077
NSN 6620-01-065-3742
NSN 5835-01-123-8305
NSN 5905-00-232-5646
NSN 6130-01-633-7313
NSN 5935-01-131-8124
NSN 5965-00-615-7118