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 6105-01-412-0811
NSN 6645-01-311-5481
NSN 5990-00-254-4825
NSN 5910-01-078-8952
NSN 6240-01-174-5646
NSN 6685-00-184-3894
NSN 5965-00-110-3330
NSN 5835-01-384-3206
NSN 6320-00-295-2854
NSN 5930-00-082-1655
NSN 5895-01-583-1545
NSN 5999-01-477-7540