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 6220-01-113-3257
NSN 6145-01-432-1767
NSN 6685-01-010-3234
NSN 5925-00-142-0752
NSN 5975-00-890-6808
NSN 6130-00-736-3606
NSN 5930-01-029-3151
NSN 6220-01-653-4753
NSN 7035-01-591-2039
NSN 6240-01-633-1206
NSN 5935-01-108-7631
NSN 6130-00-339-6134